EP2851503B1 - Drilling machine having a barrel provided with several carousels - Google Patents

Drilling machine having a barrel provided with several carousels Download PDF

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Publication number
EP2851503B1
EP2851503B1 EP14184774.9A EP14184774A EP2851503B1 EP 2851503 B1 EP2851503 B1 EP 2851503B1 EP 14184774 A EP14184774 A EP 14184774A EP 2851503 B1 EP2851503 B1 EP 2851503B1
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EP
European Patent Office
Prior art keywords
carousel
drilling
tubes
tube
barrel
Prior art date
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Active
Application number
EP14184774.9A
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German (de)
French (fr)
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EP2851503A1 (en
Inventor
Julien Bernard
Thomas Juteau
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Soletanche Freyssinet SA
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Soletanche Freyssinet SA
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Publication of EP2851503A1 publication Critical patent/EP2851503A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
    • E21B19/146—Carousel systems, i.e. rotating rack systems
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors

Definitions

  • the present invention relates to the field of geotechnical drilling machines and methods.
  • the invention more specifically relates to drilling machines comprising tubular elements which are connected to each other during the progress of the drilling in order to perform a borehole whose depth is much greater than the length of a tubular element.
  • the invention relates even more specifically to drilling machines in which at least two sets of tubes are used.
  • Some drilling operations use two concentric tubes, namely an outer tube and an inner tube.
  • the machines of the sounder type are configured to carry out coring in the soil, in order to be able to study a posteriori the mechanical and physicochemical characteristics of the soil surveyed.
  • Such a machine is particularly described in EP 0 860 582 .
  • This machine has outer and inner tubes, which are stored on the rotating barrel. These tubes are designed to be connected to each other as the drilling operations progress.
  • the inner and outer tubes are stored in a rotating barrel. More specifically, the outer tubes are arranged around the inner tubes.
  • the machine described in this document comprises a handling device which is positioned above the barrel to enter the chosen tube. Once the tube has been gripped, the handling device moves vertically in order to fully extract the tube by exiting it from the top of the barrel. It is therefore understood that the handling device must be able to move vertically over a length greater than the length of the tube. It is therefore conceivable that such a machine is particularly bulky, especially because of the necessary presence of the guiding and moving means of the handling device positioned above the barrel.
  • a first object of the present invention is to provide a machine which is more compact.
  • the rotary drum comprises a first carousel and at least a second carousel, distinct from the first carousel, the first and second carousels being coaxial and arranged to pivot relative to each other around the second axis, the first carousel being disposed within the second carousel and comprising the first housing, while the second carousel comprises the second housing.
  • the first carousel can therefore pivot about the second axis independently of the second carousel.
  • Such an arrangement also makes it possible to achieve a radial output of the first and second drill pipes, which further contributes to the compactness of the machine.
  • the drilling machine may comprise a number of concentric carousels greater than two.
  • the tubes of the first series may be different or identical to the tubes of the second series.
  • the first tubes may be different or identical to the second tubes.
  • the first tubes are coring tubes
  • the second tubes are drill tubes adapted to receive the coring tubes.
  • the first tubes are inner tubes of drilling while the second tubes are outer tubes having a diameter greater than the diameter of the inner tubes so that the inner tubes can be accommodated in the tubes external drilling.
  • first and second tubes may be identical tubular drilling elements, intended to be connected one after the other, and so as to drill very deep.
  • Such a configuration makes it possible to have a very compact drilling machine making it possible to drill very deep.
  • the first housing may contain identical tubes or different from each other.
  • the tubes of the first series are not necessarily identical to each other.
  • connection means further comprise displacement means for positioning the drill head above the barrel.
  • the displacement means are configured to move the barrel in a direction perpendicular to the second axis, in order to position the access of the barrel below the drill head.
  • the drilling machine comprises actuators, attached to a frame carrying the drill head, said actuators being configured to translate the barrel to the drill head.
  • the barrel thus has an unobstructed position in which the access of the barrel is remote from the drill head, and at least one transfer position in which the access is positioned below the drill head.
  • the barrel has a first transfer position for connecting the second tubes, and a second position of transfer for the connection of the first tubes.
  • the displacement between the disengaged position and one or the other of the first and second transfer positions consisting of a translation of the barrel in a direction perpendicular to the second axis.
  • the displacement means are configured to move the drill head to the barrel to fetch one of the tubes.
  • connection means further comprises an extraction device for lifting at least one of the second tubes to the drill head.
  • This extraction device is preferably disposed in the lower part of the barrel. It allows to raise a few centimeters of said second tube to connect to the drill head.
  • the machine of the prior art is particularly bulky. This is particularly due to the fact that the tubes are extracted out of the barrel in a direction parallel to the axis of rotation of the barrel.
  • Another object of the invention is to provide a drilling machine that is substantially more compact.
  • the drilling machine is configured to extract (or introduce) the tubes into the barrel in a radial direction, and no longer axially.
  • the second carousel has a radially through opening allowing the first tubes to be extracted or introduced radially into the first carousel passing through said opening.
  • the second carousel has a neutral position in which the opening is positioned opposite the access of the barrel.
  • the inlet (or outlet) of the first tubes is therefore made at the same place as the inlet (or the outlet) of the second tubes.
  • the second carousel is in the neutral position when entering (or leaving) the first tubes in (out) the barrel.
  • the drilling machine further comprises a gripping device configured to grip and move one of the first tubes.
  • the gripping device passes through the drill head along the axis of drilling.
  • the gripping device is an articulated gripper mounted at the lower end of a cable.
  • This type of device is described in particular in US 3,103,981 .
  • the cable and the clamp can thus axially pass through the drilling head.
  • the displacement of the clamp is coaxial with the drilling axis.
  • the gripping device can be brought away from the drill head so as not to hinder the gripping by the latter of the second tubes.
  • the barrel comprises a single motor for the rotation of the first and second carousels.
  • the drilling machine comprises a first motor for rotating the first carousel and a second motor for rotating the second carousel independently of the first carousel. It is specified that the first and second carousels can rotate both clockwise and counterclockwise.
  • the machine further comprises a locking device for locking a tube in the ground.
  • This locking device thus has a locked position in which the translation of the tube is blocked, and an unlocked position.
  • a first interest is to maintain a tube of the second series in the soil during its attachment to another tube of the second series, during drilling. Another interest is to maintain the second tubes - attached to each other - which are driven into the ground during disassembly of the second upper tube.
  • This installation makes it possible to carry out coring of a much greater length than that of a coring tube, and this without intervention near the drilling machine.
  • Such a drilling installation finds an advantageous application in the realization of coring in places where the man can not access, for example at the bottom of the sea.
  • the barrel of the installation contains the empty coring tubes, as well as the drill pipes.
  • the barrel of the installation contains the full coring tubes as well as the drill pipes.
  • the coring tubes, and the drill pipes are similar to those described in the document US 3,103,981 .
  • This document notably describes an example of joining a coring tube to a drill pipe.
  • the installation is configured to be housed in a standard container, type ISO 668 or ISO 1496, for example of a size of twenty inches.
  • the drill pipes are extracted from the ground, disconnected from each other, and stored in the second carousel.
  • the plant can be moved, for example up to the surface in the case of a sounding of a seabed.
  • the second carousel comprises an opening allowing the radial passage of the drill pipes through the second carousel.
  • the second carousel is rotated to bring it into a neutral position, that is to say in order to bring the opening into position. view of the barrel access, and the first carousel is rotated to bring the second core tube empty next to the barrel access.
  • the drilling tube or tubes disposed in the soil are kept locked in the ground.
  • FIG. 1 A coring installation 10 there is illustrated a ground S according to the present invention.
  • the coring installation 10 is configured to perform a coring operation of a seabed without human intervention, other than the remote control of said installation.
  • the coring installation is controlled from a ship to which it is connected.
  • the coring installation 10 makes it possible to carry out a coring on a depth of approximately 100 meters, by means of a plurality of tubes of coring, usually called corers.
  • the initially empty drill pipes, which are filled at the end of the coring operation, are stored in the coring installation.
  • the core drilling apparatus 10 includes a drilling machine 12, which will be described in more detail below, a plurality of core tubes 14 and a plurality of drill pipes 16, and.
  • the coring tubes 14 are configured to be introduced into the drill pipes 16 and to be secured to the first drill pipe introduced into the ground, namely the lower drill pipe 16 0 . It is therefore understood that the drill pipes 16 have a diameter slightly greater than the diameter of the coring tubes 14.
  • coring and drilling tubes are well known, particularly from the document US 3,103,981 and will not be described in more detail in this patent application.
  • the geotechnical drilling machine 12 comprises a parallelepiped-shaped frame 20 sized to be housed in a standard ISO 668 or ISO 1496 type container. In this example, the installation is arranged to be accommodable in a twenty-inch container.
  • the drilling machine 12 is connected to the ship via a pipe 22 in which hydraulic hoses pass for the actuation of the motors and actuators of the machine.
  • the geotechnical drilling machine 12 further comprises a drilling head 24 which is rotatable about a first axis A corresponding to the drilling axis F.
  • the drilling head 24 is mounted on a carriage 26 movable in translation along rails 28 which extend parallel to the drilling axis F. This carriage 26 constitutes means for moving longitudinally the drill head along the drill axis F.
  • the movable carriage 26 carrying the drill head 24 moves inside the frame 20 substantially along its length L.
  • the drilling machine 12 further comprises a barrel 30 which is rotatable about a second axis B parallel to the drill axis F.
  • the barrel 30 is also housed inside the frame 20.
  • the barrel 30 is surmounted by a cover 32, the general shape of disc, which has a radial cutout forming a port 34.
  • the barrel 30 comprises a first carousel 40 and a second carousel 60 distinct from the first carousel.
  • the first carousel 40 is illustrated on the figure 3
  • the second carousel 60 is illustrated on the figure 4
  • the first and second carousels 40, 60 are coaxial and arranged to pivot relative to each other about the second axis B. More precisely, the first carousel 40 is disposed inside the second carousel 60.
  • the first carousel 40 comprises a lower portion 42, in this example in the form of drum, and an upper portion 44 of disc shape which is connected to the lower shaped part drum via longitudinal struts 46 parallel to the axis of rotation of the barrel.
  • the lower portion 42 is provided with a plurality of orifices 48a formed in a first disk 50 of the lower portion 42.
  • the lower portion 42 further comprises a second disk 52 disposed under the first disk 50, this second disk being devoid of orifices.
  • the upper portion 44 comprises a plurality of notches 48b which extend along the circumference of the first carousel 40.
  • the second carousel 60 comprises a hollow cylindrical lower part 62 and an upper disk-shaped portion 64 connected to the lower portion 62 via two longitudinal struts 66 that are parallel to the axis of rotation of the barrel 30 .
  • the lower portion 62 has a plurality of orifices 68a that extend along the circumference of the second carousel, while the upper portion 64 has a plurality of notches 68b that also extend along the circumference of the second carousel.
  • the lower portion 62 of the second carousel 60 is hollow and opens to receive the first carousel 40.
  • the first carousel 40 is housed inside the second carousel 60.
  • the diameter of the first carousel 40 is less than the diameter of the second carousel 60.
  • the orifices 48a and the notches 48b of the first carousel 40 form first housings 48 for receiving the coring tubes 14.
  • the orifices 68a and 68b of the second carousel 60 form second housings 68 for receiving the drill pipes 16 .
  • the first and second housings 48, 68 extend in the axial direction of the barrel.
  • the first housings are arranged next to each other in a first circular line, while the second housing are arranged next to each other along a second circular line, the first and second circular lines being concentric. It is also noted that the diameter of the first circular line is smaller than the diameter of the second circular line, so that the second housing is arranged around the first housing.
  • the drill tubes are disposed at the outer periphery of the barrel and surround the coring tubes.
  • the second carousel 60 has a radially through opening 70 allowing the coring tubes 14 to be extracted or introduced radially into the first carousel 40 by passing through the opening 70.
  • the opening 70 consists of a slot 70a formed in the lower part 62 of the second carousel 60, and a cut 70b made in the disc of the upper part 64, this cut having a radial depth greater than the depth radial radial indentations 48b of the first carousel 40.
  • the machine comprises a first motor 80 for rotating the first carousel 40 and a second motor 82 for rotating the second carousel 60, independently of the first carousel 40.
  • one of the drill pipe 16 ' is connected to the drill head 24. It is understood that the displacement of the carriage 26 makes it possible to move the drill pipe along the drill axis F.
  • the drilling machine further comprises a gripping device 90 which is configured to grip the coring tubes in the barrel 30, and move them along the drill axis F.
  • the gripping device 90 comprises, as shown on the figure 6 , an actuator 92, allowing the rise and fall of a clamp 94 connected to the lower end of a cable 96.
  • the cable 96 is connected to a pulley actuated by a motor not shown here.
  • the pulley is attached to the frame 20, above the drill head.
  • the unrolled portion of the cable extends in the direction of drilling F while crossing the drill head.
  • the gripping device 90 makes it possible in particular to introduce the empty coring tubes 14 inside the drill pipes 16 previously sunk into the ground S.
  • the gripping device also makes it possible to extract the coring tubes. full out of the drill tubes.
  • connection means 100 of the drilling machine 12 which make it possible to connect the drill head 24 with one of the drill tubes 16 contained in the barrel 30.
  • the connection means 100 comprise displacement means 102, 104, in this case hydraulic cylinders, which allow positioning of the head. drilling above the barrel. More specifically, in this example, the displacement means 102, 104 are configured to move the barrel relative to the frame 20 in a direction X which is perpendicular to the axis of rotation B of the barrel. The actuation of the cylinders 102, 104 thus makes it possible to bring the drill pipe 16 ' below the drill head 24 so as to position the longitudinal axis C of the drill pipe 16' coaxially with the drilling F, as illustrated on the Figure 8 .
  • the position of the cylinder taken in the Figure 8 is called first transfer position
  • connection means 100 further comprise an extraction device 110, better visible on the figure 2 , whose function is to raise slightly the drill pipe 16 ' in the axial direction of the barrel to bring it to the drill head 24.
  • the extraction device 110 comprises a pallet 112 actuated by a jack 114 which allows slightly raise the drill pipe, the latter axially through the access 34 to connect to the drill head 24 when the barrel is in its first transfer position.
  • the cylinders 102, 104 are actuated to move the barrel away from the drill head, to bring it into the unobstructed position of the drill pipe 24. figure 7 .
  • the barrel 30 is in the released position.
  • the second carousel 60 is pivoted about the axis B in order to bring the cutout 70b of the opening 70 opposite the access 34.
  • the cutout 70b is made such that, considered in a plane perpendicular to the axis of rotation B of the barrel 30, the cutout 70b discovers the notch 48b of the first housing 48 in which the coring tube 14 ' is stored. It is therefore understood that the radial depth of the cutout 70b is greater than that of the notches 68 b wherein are housed the drill pipe 16.
  • the position of the second carousel 60, in which the cutout 70b of the opening 70 is opposite the access 34, is called the neutral position of the second carousel. It is in this neutral position that one can extract the core tubes radially out of the barrel.
  • the axis D of the coring tube 14 ' is coaxial with the drilling axis F. It is in this arrangement that the gripping device 90, through the clamp 94, grasps the upper end of the coring tube 14 '. After the coring tube 14 'has been grasped by the gripping device 90, the barrel 30 is returned to the disengaged position of the figure 9 , thanks to the actuation of the cylinders 102, 104.
  • the drilling machine 12 further comprises a locking device 130 disposed in the lower part of the frame for locking a drill pipe 130 driven into the ground S.
  • This locking device is provided with jaws. It has a locked position and an unlocked position.
  • the barrel 30, the drill head 24, the gripping device 90, the locking device 130 are schematically illustrated.
  • the barrel 30 is shown in plan view.
  • the barrel 30 is initially equipped with thirty-two drill pipes 16, and thirty-two coring tubes 14. Of course, before the coring operations, the coring tubes 14 are empty.
  • the gripping device 90 is retracted, the clamp 94 being located above the drill head .
  • the locking device 130 is in the unlocked position.
  • the first drill pipe 16 0 containing the first empty coring tube 14 1 is then introduced into the ground S by moving the drill head 24 downwards along the drill axis F as shown in FIG. figure 12 .
  • the latter has filled.
  • the first coring tube 14 1 full is illustrated in black on the figure 12 .
  • the locking device 130 is then actuated to lock the first drill pipe 16 0 in the ground. This step, illustrated on the figure 13 , however , is optional.
  • the drill head 24 is lifted.
  • the gripping device is then actuated so as to lower the clamp 94 through the drill pipe 16 0 to come to grip the coring tube 14 1 .
  • This step is illustrated on the figure 15 .
  • the gripping device is actuated to raise the clamp 94 attached to the full core tube 14 1 , the first drill pipe 16 0 being held in the ground 16 through the blocking device 130.
  • the barrel 30 is then brought from its unobstructed position to its second transfer position so that the first coring tube 14 1 full is stored in the first carousel 40. It is thus clear that the first coring tube 14 1 passes radially through the second carousel 60 through the opening 70 to be brought into a first empty housing 48 1 of the first carousel.
  • the barrel 30 is returned to the disengaged position, as shown in FIG. figure 18 .
  • first carousel 40 is pivoted one notch so as to bring a second coring tube 14 2 empty opposite the opening 70 ( FIG. figure 19 ).
  • the barrel 30 is then brought into its second transfer position so that the gripping device 90 grasps the second empty coring tube 14 2 ( figure 20 ).
  • the second coring tube 14 2 After the second coring tube 14 2 has been introduced into the first drill pipe 16 0 , the second coring tube 14 2 is secured to the first drill pipe 16 0 .
  • the gripper 94 of the gripping device 90 is returned to the retracted position ( figure 23 ).
  • the second carousel is rotated one step so as to bring a second drill tube 16 1 opposite the port 34 of the cylinder 30.
  • the cylinder is then brought into the first transfer position for connecting the drilling head 24 at the second drill pipe 16 1 ( figure 25B ).
  • the barrel 30 is then returned to the unobstructed position ( figure 25A ).
  • the drill head 24 is moved to connect the lower end of the second drill pipe 16 1 to the upper end of the first drill pipe 16 0 maintained in the soil ( 25B ).
  • the locking device is brought into the unlocked position. Then the drill head 24 is moved downward along the axis of drilling so as to introduce into the ground the first drill pipe, the second drill pipe and the second core tube 14 2 .
  • the second coring tube 14 2 shall fills.
  • the second coring tube 14 2 is extracted with the aid of the gripping device 90 (FIG. figure 27 ).
  • the second carousel is rotated so as to bring it to neutral. Then, as illustrated on the figure 29 , The barrel is brought into the second transfer position so that the second coring tube 14 2 Full be stored in the empty slot of the first carousel which was previously occupied by the second coring tube 14 2 empty.
  • the steps described above are successively repeated until all the coring tubes 14 full are stored in the first carousel 40.
  • the next step consists in recovering the drill pipes and storing them in the second carousel.
  • the coring installation is then raised to the surface in order to proceed with the processing of the cores.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
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  • Earth Drilling (AREA)

Description

Arrière-plan deBackground of l'inventionthe invention

La présente invention concerne le domaine des machines et procédés de forage géotechnique.The present invention relates to the field of geotechnical drilling machines and methods.

L'invention concerne plus spécifiquement les machines de forage comportant des éléments tubulaires qui sont connectés les uns aux autres pendant l'avancement du forage afin de réaliser un forage dont la profondeur est très supérieure à la longueur d'un élément tubulaire.The invention more specifically relates to drilling machines comprising tubular elements which are connected to each other during the progress of the drilling in order to perform a borehole whose depth is much greater than the length of a tubular element.

L'invention concerne encore plus spécifiquement les machines de forage dans lesquelles on utilise au moins deux séries de tubes.The invention relates even more specifically to drilling machines in which at least two sets of tubes are used.

Certaines opérations de forage utilisent deux tubes concentriques, à savoir un tube extérieur et un tube intérieur.Some drilling operations use two concentric tubes, namely an outer tube and an inner tube.

C'est notamment le cas des machines de forage géotechnique de type sondeuse. Les machines de type sondeuse sont configurées pour réaliser des carottages dans le sol, afin de pouvoir étudier a posteriori les caractéristiques mécaniques et physico-chimiques du sol sondé.This is particularly the case of geotechnical drill rigs. The machines of the sounder type are configured to carry out coring in the soil, in order to be able to study a posteriori the mechanical and physicochemical characteristics of the soil surveyed.

C'est également le cas des machines de forage utilisant des trains de tiges composés d'un tube intérieur et d'un tube extérieur. Un exemple peut être trouvé dans le document EP 0 860 582 A1 qui est considéré comme l'art antérieur le plus proche.This is also the case for drilling machines using rods composed of an inner tube and an outer tube. An example can be found in the document EP 0 860 582 A1 which is considered the closest prior art.

La présente invention porte ainsi sur une machine de forage géotechnique comportant :

  • une tête de forage rotative autour d'un premier axe ;
  • des moyens pour déplacer longitudinalement la tête de forage rotative selon un axe de forage, parallèle au premier axe ;
  • un barillet rotatif autour d'un second axe, parallèle au premier axe, ledit barillet comportant une pluralité de premiers logements pour recevoir une première série de de tubes, les premiers tubes, et une pluralité de seconds logements pour recevoir une seconde série de tubes, les deuxièmes tubes, les premiers logements étant disposés les uns à côté des autres selon une première ligne circulaire, tandis que les seconds logements sont disposés les uns à côté des autres selon une seconde ligne circulaire, les première et seconde lignes circulaires étant concentriques, le diamètre de la première ligne circulaire étant inférieur au diamètre de la seconde ligne circulaire de sorte que les seconds logements sont disposés autour des premiers logements, le barillet comportant un accès permettant la sortie des tubes hors des premier et seconds logements ;
  • des moyens de connexion pour connecter la tête de forage au moins avec l'un des seconds tubes contenus dans le barillet.
The present invention thus relates to a geotechnical drilling machine comprising:
  • a rotary drill head about a first axis;
  • means for longitudinally moving the rotary drill head along a drill axis parallel to the first axis;
  • a barrel rotatable about a second axis, parallel to the first axis, said barrel having a plurality of first housings for receiving a first set of tubes, the first tubes, and a plurality of second housings for receiving a second series of tubes, the second tubes, the first housings being arranged next to each other in a first circular line, while the second housings are arranged next to each other in a second circular line, the first and second circular lines being concentric, the diameter of the first circular line being smaller than the diameter of the second circular line so that the second housing is arranged around the first housing, the cylinder having an access allowing the output of the tubes out of the first and second housing;
  • connection means for connecting the drill head at least with one of the second tubes contained in the barrel.

Une telle machine est notamment décrite dans EP 0 860 582 . Cette machine comporte des tubes extérieurs et intérieurs, qui sont stockés sur le barillet rotatif. Ces tubes sont prévus pour être connectés les uns aux autres au fur et à mesure de l'avancement des opérations de forage.Such a machine is particularly described in EP 0 860 582 . This machine has outer and inner tubes, which are stored on the rotating barrel. These tubes are designed to be connected to each other as the drilling operations progress.

Dans cette machine, les tubes intérieurs et extérieurs sont donc stockés dans un barillet rotatif. Plus précisément, les tubes extérieurs sont disposés autour des tubes intérieurs. Pour prendre un tube extérieur ou intérieur stocké dans le barillet, la machine décrite dans ce document comporte un dispositif de manipulation qui vient se positionner au-dessus du barillet afin de saisir le tube choisi. Une fois le tube saisi, le dispositif de manipulation se déplace verticalement afin d'extraire intégralement le tube en le sortant par le haut du barillet. On comprend donc que le dispositif de manipulation doit pouvoir se déplacer verticalement sur une longueur supérieure à la longueur du tube. On conçoit donc qu'une telle machine est particulièrement encombrante, notamment en raison de la présence nécessaire des moyens de guidage et de déplacement du dispositif de manipulation positionnés au-dessus du barillet.In this machine, the inner and outer tubes are stored in a rotating barrel. More specifically, the outer tubes are arranged around the inner tubes. To take an outer or inner tube stored in the barrel, the machine described in this document comprises a handling device which is positioned above the barrel to enter the chosen tube. Once the tube has been gripped, the handling device moves vertically in order to fully extract the tube by exiting it from the top of the barrel. It is therefore understood that the handling device must be able to move vertically over a length greater than the length of the tube. It is therefore conceivable that such a machine is particularly bulky, especially because of the necessary presence of the guiding and moving means of the handling device positioned above the barrel.

On conçoit également que la sélection de l'un des tubes intérieurs (respectivement extérieurs) entraine également la rotation des tubes extérieurs (respectivement intérieurs), ce qui n'est pas nécessaire. La rotation simultanée de tous les tubes, intérieurs et extérieurs, nécessite l'emploi de moteurs puissants et donc également encombrants.It is also understood that the selection of one of the inner tubes (respectively outer) also causes the rotation of the outer tubes (respectively inner), which is not necessary. The simultaneous rotation of all tubes, interior and exterior, requires the use of powerful motors and therefore also bulky.

Objet et résumé de l'inventionObject and summary of the invention

Un premier objet de la présente invention est de proposer une machine qui soit plus compacte.A first object of the present invention is to provide a machine which is more compact.

L'invention atteint son but par le fait que le barillet rotatif comporte un premier carrousel et au moins un second carrousel, distinct du premier carrousel, les premier et second carrousels étant coaxiaux et agencés pour pivoter l'un par rapport à l'autre autour du second axe, le premier carrousel étant disposé à l'intérieur du second carrousel et comprenant les premiers logements, tandis que le second carrousel comprend les seconds logements.The invention achieves its object by the fact that the rotary drum comprises a first carousel and at least a second carousel, distinct from the first carousel, the first and second carousels being coaxial and arranged to pivot relative to each other around the second axis, the first carousel being disposed within the second carousel and comprising the first housing, while the second carousel comprises the second housing.

Le premier carrousel peut donc pivoter autour du second axe, indépendamment du deuxième carrousel.The first carousel can therefore pivot about the second axis independently of the second carousel.

Ainsi, on peut faire tourner les premiers tubes sans faire tourner les seconds tubes, et inversement. On comprend donc que le poids des tubes à déplacer est inférieur à celui du barillet de l'art antérieur. Cela donne ainsi la possibilité d'utiliser une motorisation plus faible et plus compacte.Thus, one can rotate the first tubes without rotating the second tubes, and vice versa. It is therefore understood that the weight of the tubes to be moved is less than that of the barrel of the prior art. This thus gives the possibility of using a weaker and more compact engine.

Un tel agencement permet également de réaliser une sortie radiale des premiers et seconds tubes de forage, ce qui participe encore à la compacité de la machine.Such an arrangement also makes it possible to achieve a radial output of the first and second drill pipes, which further contributes to the compactness of the machine.

Sans sortir du cadre de la présente invention, la machine de forage peut comprendre un nombre de carrousels concentriques supérieur à deux.Without departing from the scope of the present invention, the drilling machine may comprise a number of concentric carousels greater than two.

En outre, au sens de l'invention, les tubes de la première série peuvent être différents ou identiques aux tubes de la seconde série. En d'autres termes, les premiers tubes peuvent être différents ou identiques aux seconds tubes.In addition, within the meaning of the invention, the tubes of the first series may be different or identical to the tubes of the second series. In other words, the first tubes may be different or identical to the second tubes.

Par exemple, les premiers tubes sont des tubes de carottage, tandis que les seconds tubes sont des tubes de forage apte à recevoir les tubes de carottage.For example, the first tubes are coring tubes, while the second tubes are drill tubes adapted to receive the coring tubes.

Selon une autre variante, les premiers tubes sont des tubes de forage intérieurs tandis que les seconds tubes sont des tubes de forage extérieurs présentant un diamètre supérieur à celui des tubes de forage intérieurs de sorte que les tubes de forage intérieurs peuvent être logés dans les tubes de forage extérieurs.According to another variant, the first tubes are inner tubes of drilling while the second tubes are outer tubes having a diameter greater than the diameter of the inner tubes so that the inner tubes can be accommodated in the tubes external drilling.

Enfin, dans une autre variante, les premier et les seconds tubes peuvent être des éléments tubulaires de forage identiques, destinés à être connectés les uns au bout des autres, et ce de manière à réaliser des forages de très grande profondeur. Une telle configuration permet de disposer d'une machine de forage très compacte permettant de réaliser des forages à très grande profondeur.Finally, in another variant, the first and second tubes may be identical tubular drilling elements, intended to be connected one after the other, and so as to drill very deep. Such a configuration makes it possible to have a very compact drilling machine making it possible to drill very deep.

Sans sortir du cadre de la présente invention, les premiers logements (respectivement les seconds logements) peuvent contenir des tubes identiques ou bien différents les uns des autres. Aussi, les tubes de la première série (respectivement de la seconde série) ne sont pas nécessairement identiques entre eux.Without departing from the scope of the present invention, the first housing (respectively the second housing) may contain identical tubes or different from each other. Also, the tubes of the first series (respectively of the second series) are not necessarily identical to each other.

Avantageusement, les moyens de connexion comportent en outre des moyens de déplacement pour positionner la tête de forage au-dessus du barillet.Advantageously, the connection means further comprise displacement means for positioning the drill head above the barrel.

De préférence, les moyens de déplacement sont configurés pour déplacer le barillet selon une direction perpendiculaire au second axe, afin de positionner l'accès du barillet en dessous de la tête de forage.Preferably, the displacement means are configured to move the barrel in a direction perpendicular to the second axis, in order to position the access of the barrel below the drill head.

Pour ce faire, la machine de forage comporte des actionneurs, fixés à un bâti portant la tête de forage, lesdits actionneurs étant configurés pour translater le barillet vers la tête de forage.To do this, the drilling machine comprises actuators, attached to a frame carrying the drill head, said actuators being configured to translate the barrel to the drill head.

Le barillet présente ainsi une position dégagée dans laquelle l'accès du barillet est éloigné de la tête de forage, et au moins une position de transfert dans laquelle l'accès est positionné en dessous de la tête de forage. De préférence, le barillet présente une première position de transfert pour la connexion des seconds tubes, et une seconde position de transfert pour la connexion des premiers tubes. Le déplacement entre la position dégagée et l'une ou l'autre des première et seconde positions de transfert consistant en une translation du barillet selon une direction perpendiculaire au second axe.The barrel thus has an unobstructed position in which the access of the barrel is remote from the drill head, and at least one transfer position in which the access is positioned below the drill head. Preferably, the barrel has a first transfer position for connecting the second tubes, and a second position of transfer for the connection of the first tubes. The displacement between the disengaged position and one or the other of the first and second transfer positions consisting of a translation of the barrel in a direction perpendicular to the second axis.

En variante, les moyens de déplacement sont configurés pour déplacer la tête de forage vers le barillet pour aller chercher l'un des tubes.Alternatively, the displacement means are configured to move the drill head to the barrel to fetch one of the tubes.

De préférence, pour faciliter l'extraction des tubes, les moyens de connexion comportent en outre un dispositif d'extraction pour soulever au moins l'un des seconds tubes vers la tête de forage. Ce dispositif d'extraction est préférentiellement disposé en partie inférieure du barillet. Il permet de soulever de quelques centimètres ledit second tube afin de le connecter à la tête de forage.Preferably, to facilitate the extraction of the tubes, the connection means further comprises an extraction device for lifting at least one of the second tubes to the drill head. This extraction device is preferably disposed in the lower part of the barrel. It allows to raise a few centimeters of said second tube to connect to the drill head.

Comme on l'a expliqué plus haut, la machine de l'art antérieur est particulièrement encombrante. Cela est notamment dû au fait que les tubes sont extraits hors du barillet selon une direction parallèle à l'axe de rotation du barillet.As explained above, the machine of the prior art is particularly bulky. This is particularly due to the fact that the tubes are extracted out of the barrel in a direction parallel to the axis of rotation of the barrel.

Un autre objet de l'invention est de proposer une machine de forage qui soit sensiblement plus compacte.Another object of the invention is to provide a drilling machine that is substantially more compact.

Selon un autre aspect avantageux de l'invention, la machine de forage est configurée pour extraire (ou introduire) les tubes dans le barillet selon une direction radiale, et non plus axiale.According to another advantageous aspect of the invention, the drilling machine is configured to extract (or introduce) the tubes into the barrel in a radial direction, and no longer axially.

Pour ce faire, le second carrousel comporte une ouverture radialement traversante permettant aux premiers tubes d'être extraits ou introduits radialement dans le premier carrousel en passant au travers de ladite ouverture.To do this, the second carousel has a radially through opening allowing the first tubes to be extracted or introduced radially into the first carousel passing through said opening.

De préférence, le second carrousel présente une position neutre dans laquelle l'ouverture est positionnée en regard de l'accès du barillet. L'entrée (ou la sortie) des premiers tubes est donc réalisée au même endroit que l'entrée (ou la sortie) des seconds tubes.Preferably, the second carousel has a neutral position in which the opening is positioned opposite the access of the barrel. The inlet (or outlet) of the first tubes is therefore made at the same place as the inlet (or the outlet) of the second tubes.

On comprend aussi que le second carrousel est en position neutre lors de l'entrée (ou la sortie) de premiers tubes dans (hors) du barillet.It is also understood that the second carousel is in the neutral position when entering (or leaving) the first tubes in (out) the barrel.

Avantageusement, la machine de forage comporte en outre un dispositif de préhension configuré pour saisir et déplacer l'un des premiers tubes.Advantageously, the drilling machine further comprises a gripping device configured to grip and move one of the first tubes.

Avantageusement, le dispositif de préhension traverse la tête de forage selon l'axe de forage.Advantageously, the gripping device passes through the drill head along the axis of drilling.

De préférence, mais pas exclusivement le dispositif de préhension est une pince articulée montée à l'extrémité inférieure d'un câble. Ce type de dispositif est notamment décrit dans US 3 103 981 .Preferably, but not exclusively, the gripping device is an articulated gripper mounted at the lower end of a cable. This type of device is described in particular in US 3,103,981 .

Le câble et la pince peuvent ainsi traverser axialement la tête de forage De préférence, le déplacement de la pince est coaxial à l'axe de forage.The cable and the clamp can thus axially pass through the drilling head. Preferably, the displacement of the clamp is coaxial with the drilling axis.

On précise que le dispositif de préhension peut être amené à distance de la tête de forage pour ne pas gêner la saisie, par cette dernière, des seconds tubes.It is specified that the gripping device can be brought away from the drill head so as not to hinder the gripping by the latter of the second tubes.

De préférence, le barillet comporte un seul moteur pour la rotation des premier et second carrousels. Selon une variante préférentielle, la machine de forage comporte un premier moteur pour faire tourner le premier carrousel et un second moteur pour faire tourner le second carrousel indépendamment du premier carrousel. On précise que les premier et second carrousels peuvent pivoter aussi bien dans le sens horaire que dans le sens antihoraire.Preferably, the barrel comprises a single motor for the rotation of the first and second carousels. According to a preferred variant, the drilling machine comprises a first motor for rotating the first carousel and a second motor for rotating the second carousel independently of the first carousel. It is specified that the first and second carousels can rotate both clockwise and counterclockwise.

Selon un aspect avantageux de l'invention, la machine comporte en outre un dispositif de blocage pour bloquer un tube dans le sol. Ce dispositif de blocage présente donc une position verrouillée dans laquelle la translation du tube est bloquée, et une position déverrouillée.According to an advantageous aspect of the invention, the machine further comprises a locking device for locking a tube in the ground. This locking device thus has a locked position in which the translation of the tube is blocked, and an unlocked position.

Un premier intérêt est de maintenir un tube de la seconde série dans le sol pendant sa fixation à un autre tube de la seconde série, au cours du forage. Un autre intérêt est de maintenir les seconds tubes - fixés les uns aux autres - qui sont enfoncés dans le sol pendant le démontage du second tube supérieur.A first interest is to maintain a tube of the second series in the soil during its attachment to another tube of the second series, during drilling. Another interest is to maintain the second tubes - attached to each other - which are driven into the ground during disassembly of the second upper tube.

L'invention concerne également une installation de carottage d'un sol comportant :

  • une machine de forage géotechnique selon l'invention ;
  • une pluralité de tubes de forage aptes à être rangés dans les seconds logements ;
  • une pluralité de tubes de carottage aptes à être rangés dans les premiers logements, les tubes de carottage étant configurés pour être introduits dans les tubes de forage et être solidarisés auxdits tubes de forage ; et
  • la machine de forage géotechnique comportant en outre un dispositif de préhension configuré pour saisir et déplacer les tubes de carottage selon l'axe de forage.
The invention also relates to a soil coring installation comprising:
  • a geotechnical drilling machine according to the invention;
  • a plurality of drill pipes adapted to be stored in the second housing;
  • a plurality of core tubes adapted to be stored in the first housing, the core tubes being configured to be introduced into the drill pipe and to be secured to said drill pipe; and
  • the geotechnical drilling machine further comprising a gripping device configured to grasp and move the core tubes along the drill axis.

Cette installation permet de réaliser des carottages d'une longueur très supérieure à celle d'un tube de carottage, et ce sans intervention à proximité de la machine de forage.This installation makes it possible to carry out coring of a much greater length than that of a coring tube, and this without intervention near the drilling machine.

Une telle installation de forage trouve une application avantageuse dans la réalisation de carottage dans des endroits où l'homme ne peut pas accéder, par exemple au fond de la mer.Such a drilling installation finds an advantageous application in the realization of coring in places where the man can not access, for example at the bottom of the sea.

Avant la réalisation de l'opération de sondage, le barillet de l'installation contient les tubes de carottage vides, ainsi que les tubes de forage.Before carrying out the drilling operation, the barrel of the installation contains the empty coring tubes, as well as the drill pipes.

A l'issue de l'opération de sondage, le barillet de l'installation contient les tubes de carottage pleins ainsi que les tubes de forage.At the end of the boring operation, the barrel of the installation contains the full coring tubes as well as the drill pipes.

De préférence, mais non exclusivement, les tubes de carottage, et les tubes de forage sont similaires à ceux décrits dans le document US 3 103 981 . Ce document décrit notamment un exemple de solidarisation d'un tube de carottage à une tube de forage.Preferably, but not exclusively, the coring tubes, and the drill pipes are similar to those described in the document US 3,103,981 . This document notably describes an example of joining a coring tube to a drill pipe.

De préférence, l'installation est configurée pour être logeable dans un conteneur standard, de type ISO 668 ou ISO 1496, par exemple d'une taille de vingt pouces.Preferably, the installation is configured to be housed in a standard container, type ISO 668 or ISO 1496, for example of a size of twenty inches.

L'invention porte également sur un procédé de carottage d'un sol dans lequel :

  • on fournit une installation de carottage selon l'invention ;
  • on introduit dans le sol un premier tube de forage contenant un premier tube de carottage initialement vide;
  • on extrait le premier tube de carottage plein tout en laissant le premier tube de forage dans le sol, on range le premier tube de carottage plein dans un premier logement vide du premier carrousel, puis on fait tourner le premier carrousel;
  • on saisit un deuxième tube de carottage vide rangé dans le premier carrousel, on l'introduit dans le premier tube de forage, et on solidarise le deuxième tube de carottage avec le premier tube de forage ;
  • on connecte la tête de forage à un deuxième tube de forage rangé dans le second carrousel, on extrait le deuxième tube de forage hors du second carrousel et on fixe le deuxième tube de forage au premier tube de forage ;
  • on déplace la tête de forage pour enfoncer dans le sol l'ensemble constitué du premier tube de forage, du deuxième tube de forage et du deuxième tube de carottage vide;
  • on extrait le deuxième tube de carottage plein, tout en laissant les premier et deuxième tubes de forage dans le sol, on range le deuxième tube de carottage plein dans un premier logement vide du premier carrousel.
The invention also relates to a method of coring a soil in which:
  • a coring installation is provided according to the invention;
  • a first drill pipe is introduced into the ground containing a first initially empty core tube;
  • extracting the first full core tube while leaving the first drill pipe in the soil, storing the first full core tube in a first empty housing of the first carousel, and then rotating the first carousel;
  • a second empty coring tube is seized stored in the first carousel, introduced into the first drill pipe, and the second coring tube is secured to the first drill pipe;
  • connecting the drill head to a second drill pipe stored in the second carousel, extracting the second drill pipe out of the second carousel and attaching the second drill pipe to the first drill pipe;
  • the drill head is moved to drive into the ground the assembly consisting of the first drill pipe, the second drill pipe and the second empty drill pipe;
  • extracting the second full core tube, while leaving the first and second drill pipe in the ground, storing the second full core tube in a first empty housing of the first carousel.

Ces étapes sont répétées jusqu'à remplir le premier carrousel de tubes de carottage pleins.These steps are repeated until filling the first carousel of full coring tubes.

Ensuite, les tubes de forage sont extraits du sol, déconnectés les uns des autres, et rangés dans le second carrousel. Une fois le barillet rempli des tubes de carottage pleins et des tubes de forage, l'installation peut être déplacée, par exemple remontée en surface dans le cas d'un sondage d'un fond marin.Then, the drill pipes are extracted from the ground, disconnected from each other, and stored in the second carousel. Once the barrel filled with full coring tubes and drill pipes, the plant can be moved, for example up to the surface in the case of a sounding of a seabed.

Avantageusement, le second carrousel comporte une ouverture permettant le passage radial des tubes de forage au travers du second carrousel. Selon l'invention, avant de saisir le deuxième tube de carottage vide rangé dans le premier carrousel, on fait tourner le second carrousel afin de l'amener en position neutre, c'est-à-dire afin d'amener l'ouverture en regard de l'accès du barillet, et on fait tourner le premier carrousel afin d'amener le deuxième tube de carottage vide en regard de l'accès du barillet.Advantageously, the second carousel comprises an opening allowing the radial passage of the drill pipes through the second carousel. According to the invention, before seizing the second empty coring tube stored in the first carousel, the second carousel is rotated to bring it into a neutral position, that is to say in order to bring the opening into position. view of the barrel access, and the first carousel is rotated to bring the second core tube empty next to the barrel access.

De préférence, pendant la manipulation des tubes de carottage, le ou les tubes de forage disposés dans le sol sont maintenus bloqués dans le sol.Preferably, during the manipulation of the coring tubes, the drilling tube or tubes disposed in the soil are kept locked in the ground.

Brèvebrief descriptiondescription desof the dessinsdrawings

L'invention sera mieux comprise à la lecture de la description qui suit d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif, en référence aux dessins annexés, sur lesquels :

  • la figure 1 est une vue en perspective d'un mode de réalisation de la machine de forage selon la présente invention ;
  • la figure 2 est une vue de détail en perspective du barillet de la machine de forage de la figure 1 ;
  • la figure 3 est une vue en perspective du premier carrousel du barillet de la figure 2 ;
  • la figure 4A est une vue en perspective du second carrousel du barillet de la figure 2 ;
  • la figure 4B est une vue en perspective, en coupe axiale, du barillet de la figure 2 ;
  • la figure 5 est une vue latérale en coupe de la machine de la figure 1 , un tube de forage étant connecté à la tête de forage ;
  • la figure 6 est une vue latérale en coupe de la machine de la figure 1 , un tube de carottage étant saisi par le dispositif de préhension traversant la tête de forage ;
  • la figure 7 est une vue de dessus de la machine de la figure 1 , le barillet étant en position dégagée ;
  • la figure 8 est une vue de dessus de la machine de la figure 1 , le barillet ayant translaté par rapport à sa position de la figure 7 pour être amené en première position de transfert, l'un des tubes de forge étant disposé sous la tête de forage ;
  • la figure 9 est une vue de dessus de la machine de la figure 1 , le barillet étant en position dégagée, et le second carrousel étant en position neutre ;
  • la figure 10 est une vue de dessus de la machine de la figure 1 , le barillet ayant translaté par rapport à sa position de la figure 9 pour être amené en seconde position de transfert, l'un des tube de carottage étant disposé sous le dispositif de préhension ;
  • la figure 11A représente de manière schématique le barillet, vu de dessus, et la tête de forage, le second carrousel étant en position neutre ;
  • la figure 11B représente de manière schématique la machine, un tube de forage, dans lequel est logé un premier tube de carottage vide, étant connecté à la tête de forage ;
  • la figure 12 illustre l'étape d'enfoncement dans le sol du tube de forage, avec le premier tube de carottage ;
  • la figure 13 illustre l'étape de blocage du tube de forage, tandis que la figure 14 illustre la remontée de la tête de forage ;
  • les figures 15 et 16 illustrent l'étape d'extraction du premier tube de carottage plein ;
  • la figure 17 illustre le déplacement du barillet vers sa seconde position de transfert ;
  • la figure 18 illustre le déplacement du barillet vers sa position dégagée, après que le premier tube de carottage plein a été placé dans un des premiers logements du premier carrousel ;
  • la figure 19 illustre la rotation du premier carrousel, afin d'amener un deuxième tube de carottage vide en regard de l'ouverture ménagée dans le second carrousel, ce dernier étant en position neutre ;
  • la figure 20 illustre le déplacement du barillet vers sa seconde position de transfert ;
  • les figures 21 et 22 illustrent l'introduction du second tube de carottage vide à l'intérieur du tube de forage maintenu dans le sol ;
  • la figure 23 illustre le retrait du dispositif de préhension ;
  • la figure 24 illustre la rotation du second carrousel afin d'amener un deuxième tube de forage en regard de l'accès du barillet ;
  • la figure 25A illustre le retour du barillet en position dégagée après la saisie par la tête de forage du second tube de forage ;
  • la figure 25B illustre la connexion du second tube de forage au premier tube de forage ;
  • la figure 26 illustre le déplacement de la tête de forage et l'enfoncement des premier et deuxième tubes de forage dans le sol, ainsi que le remplissage du deuxième tube de carottage ;
  • la figure 27 illustre l'extraction du deuxième tube de carottage plein ;
  • la figure 28 illustre la rotation du second carrousel et son amenée en position neutre ;
  • la figure 29 illustre le retour du barillet en position dégagée, après avoir rangé le deuxième tube de carottage plein dans le premier carrousel ;
  • la figure 30 illustre le barillet à l'issue de l'opération de carottage, tous les premiers logements du premier carrousel étant occupés par des tubes de carottages pleins ;
  • la figure 31 illustre la levée des tubes de forage situés dans le sol ;
  • la figure 32 illustre le blocage des tubes de forage situés dans le sol ;
  • la figure 33 illustre le démontage du tube de forage supérieur du reste des tubes de forage maintenus dans le sol par le dispositif de blocage ;
  • la figure 34 illustre la rotation du second carrousel afin d'amener un deuxième logement libre en regard de l'accès du barillet ; et
  • la figure 35 illustre le retour du barillet en position dégagée après que le tube de forage supérieur a été rangé dans le deuxième logement.
The invention will be better understood on reading the following description of an embodiment of the invention given by way of non-limiting example, with reference to the appended drawings, in which:
  • the figure 1 is a perspective view of an embodiment of the drilling machine according to the present invention;
  • the figure 2 is a detailed perspective view of the drum machine barrel from the figure 1 ;
  • the figure 3 is a perspective view of the first carousel of the barrel of the figure 2 ;
  • the Figure 4A is a perspective view of the second carousel of the barrel of the figure 2 ;
  • the Figure 4B is a perspective view, in axial section, of the barrel of the figure 2 ;
  • the figure 5 is a sectional side view of the machine from the figure 1 , A drill pipe connected to the drill head;
  • the figure 6 is a sectional side view of the machine from the figure 1 , A core sampling tube is gripped by the gripping device through the drilling head;
  • the figure 7 is a top view of the machine from the figure 1 , The cylinder being in the disengaged position;
  • the Figure 8 is a top view of the machine from the figure 1 , the barrel having translated in relation to its position of the figure 7 to be brought to the first transfer position, one of the forging tubes being disposed under the drill head;
  • the figure 9 is a top view of the machine from the figure 1 , The cylinder being in the disengaged position, and the second carousel being in neutral position;
  • the figure 10 is a top view of the machine from the figure 1 , the barrel having translated in relation to its position of the figure 9 to be brought into the second transfer position, one of the coring tube being disposed under the gripping device;
  • the figure 11A schematically represents the barrel, viewed from above, and the drill head, the second carousel being in the neutral position;
  • the Figure 11B schematically represents the machine, a drill pipe, in which is housed a first empty core tube, being connected to the drill head;
  • the figure 12 illustrates the step of driving into the ground of the drill pipe, with the first coring tube;
  • the figure 13 illustrates the step of blocking the drill pipe, while the figure 14 illustrates the rise of the drill head;
  • the figures 15 and 16 illustrate the step of extracting the first solid core tube;
  • the figure 17 illustrates the movement of the barrel towards its second transfer position;
  • the figure 18 illustrates the movement of the barrel to its unobstructed position, after the first solid core tube has been placed in one of the first housings of the first carousel;
  • the figure 19 illustrates the rotation of the first carousel, in order to bring a second coring tube empty opposite the opening in the second carousel, the latter being in the neutral position;
  • the Figure 20 illustrates the movement of the barrel towards its second transfer position;
  • the figures 21 and 22 illustrate the introduction of the second empty core tube into the drill pipe held in the ground;
  • the figure 23 illustrates the withdrawal of the gripping device;
  • the figure 24 illustrates the rotation of the second carousel to bring a second drill pipe opposite the access of the barrel;
  • the figure 25A illustrates the return of the barrel in the released position after the seizing by the drill head of the second drill pipe;
  • the figure 25B illustrates the connection of the second drill pipe to the first drill pipe;
  • the figure 26 illustrates the movement of the drill head and the driving of the first and second drill pipe into the ground, as well as the filling of the second drill pipe;
  • the figure 27 illustrates the extraction of the second full coring tube;
  • the figure 28 illustrates the rotation of the second carousel and its bringing into neutral position;
  • the figure 29 illustrates the return of the barrel in the unobstructed position, after storing the second full coring tube in the first carousel;
  • the figure 30 illustrates the barrel at the end of the coring operation, all the first housing of the first carousel being occupied by tubes of full cores;
  • the figure 31 illustrates the lifting of drill pipes located in the ground;
  • the figure 32 illustrates the blockage of drill pipes located in the ground;
  • the figure 33 illustrates disassembly of the upper drill pipe from the rest of the drill pipes held in the ground by the blocking device;
  • the figure 34 illustrates the rotation of the second carousel so as to bring a second free housing opposite the access of the barrel; and
  • the figure 35 illustrates the return of the barrel in the released position after the upper drill pipe has been stored in the second housing.

Description détaillée de l'inventionDetailed description of the invention

Sur la figure 1 , on a illustré une installation de carottage 10 d'un sol S conforme à la présente invention.On the figure 1 A coring installation 10 there is illustrated a ground S according to the present invention.

Dans cet exemple, l'installation de carottage 10 est configurée pour réaliser une opération de carottage d'un fond marin sans intervention humaine, autre que la commande à distance de ladite installation. L'installation de carottage est commandée depuis un navire auquel elle est reliée.In this example, the coring installation 10 is configured to perform a coring operation of a seabed without human intervention, other than the remote control of said installation. The coring installation is controlled from a ship to which it is connected.

L'installation de carottage 10 permet de réaliser un carottage sur une profondeur d'environ 100 mètres, à l'aide d'une pluralité de tubes de carottage, généralement appelés carottiers. Les tubes de forage initialement vides, et pleins à l'issue de l'opération de carottage sont stockés dans l'installation de carottage.The coring installation 10 makes it possible to carry out a coring on a depth of approximately 100 meters, by means of a plurality of tubes of coring, usually called corers. The initially empty drill pipes, which are filled at the end of the coring operation, are stored in the coring installation.

L'installation de carottage 10 comporte une machine de forage 12, qui sera décrite plus en détail ci-dessous, une pluralité de tubes de carottage 14 et une pluralité de tubes de forage 16, et. Les tubes de carottage 14 sont configurés pour être introduits dans les tubes de forage 16 et être solidarisés au premier tube de forage introduit dans le sol, à savoir le tube de forage inférieur 160 . On comprend donc que les tubes de forage 16 présentent un diamètre légèrement supérieur au diamètre des tubes de carottage 14. The core drilling apparatus 10 includes a drilling machine 12, which will be described in more detail below, a plurality of core tubes 14 and a plurality of drill pipes 16, and. The coring tubes 14 are configured to be introduced into the drill pipes 16 and to be secured to the first drill pipe introduced into the ground, namely the lower drill pipe 16 0 . It is therefore understood that the drill pipes 16 have a diameter slightly greater than the diameter of the coring tubes 14.

Les tubes de carottage et de forage sont bien connus, notamment du document US 3 103 981 , et ne seront pas décrits plus en détail dans la présente demande de brevet.The coring and drilling tubes are well known, particularly from the document US 3,103,981 and will not be described in more detail in this patent application.

La machine de forage géotechnique 12 comporte un bâti 20 de forme parallélépipédique dimensionné pour être logé dans un container standard de type ISO 668 ou ISO 1496. Dans cet exemple, l'installation est agencée pour être logeable dans un conteneur de vingt pouces.The geotechnical drilling machine 12 comprises a parallelepiped-shaped frame 20 sized to be housed in a standard ISO 668 or ISO 1496 type container. In this example, the installation is arranged to be accommodable in a twenty-inch container.

La machine de forage 12 est reliée au navire par l'intermédiaire d'une conduite 22 dans laquelle passent des flexibles hydrauliques pour l'actionnement des moteurs et actionneurs de la machine.The drilling machine 12 is connected to the ship via a pipe 22 in which hydraulic hoses pass for the actuation of the motors and actuators of the machine.

La machine de forage géotechnique 12 comporte en outre une tête de forage 24 qui est rotative autour d'un premier axe A correspondant à l'axe de forage F. La tête de forage 24 est montée sur un chariot 26 mobile en translation le long de rails 28 qui s'étendent parallèlement à l'axe de forage F. Ce chariot 26 constitue des moyens pour déplacer longitudinalement la tête de forage selon l'axe de forage F.The geotechnical drilling machine 12 further comprises a drilling head 24 which is rotatable about a first axis A corresponding to the drilling axis F. The drilling head 24 is mounted on a carriage 26 movable in translation along rails 28 which extend parallel to the drilling axis F. This carriage 26 constitutes means for moving longitudinally the drill head along the drill axis F.

Comme on le constate sur la figure 1 , le chariot mobile 26 portant la tête de forage 24 se déplace à l'intérieur du bâti 20 selon sensiblement toute sa longueur L.As we see on the figure 1 , the movable carriage 26 carrying the drill head 24 moves inside the frame 20 substantially along its length L.

La machine de forage 12 comporte en outre un barillet 30 qui est rotatif autour d'un second axe B parallèle à l'axe de forage F. Le barillet 30 est également logé à l'intérieur du bâti 20. The drilling machine 12 further comprises a barrel 30 which is rotatable about a second axis B parallel to the drill axis F. The barrel 30 is also housed inside the frame 20.

Sur la figure 2 , on constate que le barillet 30 est surmonté d'un capot 32, en forme générale de disque, qui comporte une découpe radiale formant un accès 34. On the figure 2 , It is noted that the barrel 30 is surmounted by a cover 32, the general shape of disc, which has a radial cutout forming a port 34.

Conformément à l'invention, le barillet 30 comporte un premier carrousel 40 et un second carrousel 60 distinct du premier carrousel.According to the invention, the barrel 30 comprises a first carousel 40 and a second carousel 60 distinct from the first carousel.

Le premier carrousel 40 est illustré sur la figure 3 , tandis que le second carrousel 60 est illustré sur la figure 4 . Les premier et second carrousels 40, 60 sont coaxiaux et agencés pour pivoter l'un par rapport à l'autre autour du second axe B. Plus précisément, le premier carrousel 40 est disposé à l'intérieur du second carrousel 60. The first carousel 40 is illustrated on the figure 3 , while the second carousel 60 is illustrated on the figure 4 . The first and second carousels 40, 60 are coaxial and arranged to pivot relative to each other about the second axis B. More precisely, the first carousel 40 is disposed inside the second carousel 60.

En se référant à la figure 3 , on constate que le premier carrousel 40 comporte une partie inférieure 42, dans cet exemple en forme de touret, et une partie supérieure 44 en forme de disque qui est reliée à la partie inférieure en forme de touret par l'intermédiaire de montants longitudinaux 46 parallèles à l'axe de rotation du barillet.Referring to the figure 3 It is found that the first carousel 40 comprises a lower portion 42, in this example in the form of drum, and an upper portion 44 of disc shape which is connected to the lower shaped part drum via longitudinal struts 46 parallel to the axis of rotation of the barrel.

La partie inférieure 42 est munie d'une pluralité d'orifices 48a ménagés dans un premier disque 50 de la partie inférieure 42. La partie inférieure 42 comporte en outre un second disque 52 disposé sous le premier disque 50, ce second disque étant dépourvu d'orifices. La partie supérieure 44 comporte quant à elle une pluralité d'échancrures 48b qui s'étendent selon la circonférence du premier carrousel 40. The lower portion 42 is provided with a plurality of orifices 48a formed in a first disk 50 of the lower portion 42. The lower portion 42 further comprises a second disk 52 disposed under the first disk 50, this second disk being devoid of orifices. The upper portion 44 comprises a plurality of notches 48b which extend along the circumference of the first carousel 40.

En se référant à la figure 4A , on constate que le second carrousel 60 comporte une partie cylindrique creuse inférieure 62 et une partie en forme de disque supérieure 64 reliée à la partie inférieure 62 par le biais de deux montants longitudinaux 66 qui sont parallèles à l'axe de rotation du barillet 30. Referring to the Figure 4A It is found that the second carousel 60 comprises a hollow cylindrical lower part 62 and an upper disk-shaped portion 64 connected to the lower portion 62 via two longitudinal struts 66 that are parallel to the axis of rotation of the barrel 30 .

La partie inférieure 62 comporte une pluralité d'orifices 68a qui s'étendent selon la circonférence du second carrousel, tandis que la partie supérieure 64 comporte une pluralité d'échancrures 68b qui s'étendent également selon la circonférence du second carrousel.The lower portion 62 has a plurality of orifices 68a that extend along the circumference of the second carousel, while the upper portion 64 has a plurality of notches 68b that also extend along the circumference of the second carousel.

La partie inférieure 62 du second carrousel 60 est creuse et débouchante de manière à recevoir le premier carrousel 40. The lower portion 62 of the second carousel 60 is hollow and opens to receive the first carousel 40.

Comme on le constate sur la figure 4b , le premier carrousel 40 est logé à l'intérieur du second carrousel 60. Le diamètre du premier carrousel 40 est inférieur au diamètre du second carrousel 60. As we see on the figure 4b The first carousel 40 is housed inside the second carousel 60. The diameter of the first carousel 40 is less than the diameter of the second carousel 60.

Comme on le comprend à l'aide de la figure 4B , les orifices 48a et les échancrures 48b du premier carrousel 40 forment des premiers logements 48 pour recevoir les tubes de carottage 14. De manière similaire, les orifices 68a et 68b du second carrousel 60 forment des seconds logements 68 pour recevoir les tubes de forage 16. As can be understood by using the Figure 4B , the orifices 48a and the notches 48b of the first carousel 40 form first housings 48 for receiving the coring tubes 14. Similarly, the orifices 68a and 68b of the second carousel 60 form second housings 68 for receiving the drill pipes 16 .

Les premier et second logements 48, 68 s'étendent selon la direction axiale du barillet.The first and second housings 48, 68 extend in the axial direction of the barrel.

Comme on le constate sur les figures 3 et 4A , les premiers logements sont disposés les uns à côté des autres selon une première ligne circulaire, tandis que les seconds logements sont disposés les uns à côté des autres selon une seconde ligne circulaire, les première et seconde lignes circulaires étant concentriques. On note également que le diamètre de la première ligne circulaire est inférieur au diamètre de la seconde ligne circulaire, de sorte que les seconds logements sont disposés autour des premiers logements.As can be seen from the figures 3 and 4A , the first housings are arranged next to each other in a first circular line, while the second housing are arranged next to each other along a second circular line, the first and second circular lines being concentric. It is also noted that the diameter of the first circular line is smaller than the diameter of the second circular line, so that the second housing is arranged around the first housing.

Aussi, dans le barillet, les tubes de forage sont disposés en périphérie extérieure du barillet et entourent les tubes de carottage.Also, in the barrel, the drill tubes are disposed at the outer periphery of the barrel and surround the coring tubes.

Selon un aspectavantageux de l'invention, le second carrousel 60 comporte une ouverture 70, radialement traversante permettant aux tubes de carottage 14 d'être extraits ou introduits radialement dans le premier carrousel 40 en passant au travers de l'ouverture 70. Dans cet exemple, l'ouverture 70 est constituée d'une fente 70a ménagée dans la partie inférieure 62 du second carrousel 60, et d'une découpe 70b réalisée dans le disque de la partie supérieure 64, cette découpe présentant une profondeur radiale supérieure à la profondeur radiale des échancrures 48b du premier carrousel 40. Cet aspect avantageux sera explicité plus en détail ci-après.According to a preferred aspect of the invention, the second carousel 60 has a radially through opening 70 allowing the coring tubes 14 to be extracted or introduced radially into the first carousel 40 by passing through the opening 70. for example, the opening 70 consists of a slot 70a formed in the lower part 62 of the second carousel 60, and a cut 70b made in the disc of the upper part 64, this cut having a radial depth greater than the depth radial radial indentations 48b of the first carousel 40. This advantageous aspect will be explained in more detail below.

En se référant à la figure 5 , on constate que la machine comporte un premier moteur 80 pour faire tourner le premier carrousel 40 et un second moteur 82 pour faire tourner le second carrousel 60, indépendamment du premier carrousel 40. Referring to the figure 5 , We see that the machine comprises a first motor 80 for rotating the first carousel 40 and a second motor 82 for rotating the second carousel 60, independently of the first carousel 40.

Sur la figure 5 , un des tubes de forage 16' est connecté à la tête de forage 24. On comprend que le déplacement du chariot 26 permet de déplacer le tube de forage selon l'axe de forage F.On the figure 5 , one of the drill pipe 16 ' is connected to the drill head 24. It is understood that the displacement of the carriage 26 makes it possible to move the drill pipe along the drill axis F.

La machine de forage comporte en outre un dispositif de préhension 90 qui est configuré pour saisir les tubes de carottage dans le barillet 30, et les déplacer selon l'axe de forage F.The drilling machine further comprises a gripping device 90 which is configured to grip the coring tubes in the barrel 30, and move them along the drill axis F.

Le dispositif de préhension 90 comporte, comme on l'a représenté sur la figure 6 , un actionneur 92, permettant la montée et la descente d'une pince 94 reliée à l'extrémité inférieure d'un câble 96. Le câble 96 est relié à une poulie actionnée par un moteur non représenté ici. La poulie est fixée au bâti 20, au-dessus de la tête de forage.The gripping device 90 comprises, as shown on the figure 6 , an actuator 92, allowing the rise and fall of a clamp 94 connected to the lower end of a cable 96. The cable 96 is connected to a pulley actuated by a motor not shown here. The pulley is attached to the frame 20, above the drill head.

La portion déroulée du câble s'étend selon la direction de forage F tout en traversant la tête de forage.The unrolled portion of the cable extends in the direction of drilling F while crossing the drill head.

On comprend donc que le dispositif de préhension 90 permet en particulier d'introduire les tubes de carottage 14 vides à l'intérieur des tubes de forage 16 préalablement enfoncés dans le sol S. Le dispositif de préhension permet également d'extraire les tubes de carottage pleins hors des tubes de forage.It will thus be understood that the gripping device 90 makes it possible in particular to introduce the empty coring tubes 14 inside the drill pipes 16 previously sunk into the ground S. The gripping device also makes it possible to extract the coring tubes. full out of the drill tubes.

A l'aide des figures 7 et 10 , on va maintenant décrire les moyens de connexion 100 de la machine de forage 12 qui permettent de connecter la tête de forage 24 avec l'un des tubes de forage 16 contenus dans le barillet 30. With the help of figures 7 and 10 , we will now describe the connection means 100 of the drilling machine 12 which make it possible to connect the drill head 24 with one of the drill tubes 16 contained in the barrel 30.

Les figures 7 à 10 représentent l'installation de carottage en vue de dessus. L'axe de rotation B du barillet est donc perpendiculaire au plan du dessin.The Figures 7 to 10 represent the coring installation in top view. The axis of rotation B of the barrel is therefore perpendicular to the plane of the drawing.

Sur la figure 7 , le barillet est dans sa position dégagée. Le tube de forage 16' rangé dans le second carrousel est positionné en regard de l'accès 34. Les moyens de connexion 100 comportent des moyens de déplacement 102, 104, en l'espèce des vérins hydrauliques, qui permettent de positionner la tête de forage au dessus du barillet. Plus précisément, dans cet exemple, les moyens de déplacement 102, 104 sont configurés pour déplacer le barillet par rapport au bâti 20 selon une direction X qui est perpendiculaire à l'axe de rotation B du barillet. L'actionnement des vérins 102, 104 permet donc d'amener le tube de forage 16' en dessous de la tête de forage 24 de manière à positionner l'axe longitudinal C du tube de forage 16' de manière coaxiale à l'axe de forage F, comme cela est illustré sur la figure 8 . La position du barillet prise dans la figure 8 est appelée première position de transfertOn the figure 7 , the barrel is in its unobstructed position. The drill pipe 16 ' stored in the second carousel is positioned opposite the access 34. The connection means 100 comprise displacement means 102, 104, in this case hydraulic cylinders, which allow positioning of the head. drilling above the barrel. More specifically, in this example, the displacement means 102, 104 are configured to move the barrel relative to the frame 20 in a direction X which is perpendicular to the axis of rotation B of the barrel. The actuation of the cylinders 102, 104 thus makes it possible to bring the drill pipe 16 ' below the drill head 24 so as to position the longitudinal axis C of the drill pipe 16' coaxially with the drilling F, as illustrated on the Figure 8 . The position of the cylinder taken in the Figure 8 is called first transfer position

Les moyens de connexion 100 comportent en outre un dispositif d'extraction 110, mieux visible sur la figure 2 , qui a pour fonction de soulever légèrement le tube de forage 16' selon la direction axiale du barillet afin de l'amener vers la tête de forage 24. Le dispositif d'extraction 110 comporte une palette 112 actionnée par un vérin 114 qui permet de soulever légèrement le tube de forage, ce dernier traversant axialement l'accès 34 pour venir se connecter à la tête de forage 24 lorsque le barillet est dans sa première position de transfert.The connection means 100 further comprise an extraction device 110, better visible on the figure 2 , whose function is to raise slightly the drill pipe 16 ' in the axial direction of the barrel to bring it to the drill head 24. The extraction device 110 comprises a pallet 112 actuated by a jack 114 which allows slightly raise the drill pipe, the latter axially through the access 34 to connect to the drill head 24 when the barrel is in its first transfer position.

Après la connexion du tube de forage 16' à la tête de forage 24, les vérins 102, 104 sont actionnés de manière à éloigner le barillet de la tête de forage, afin de l'amener dans la position dégagée de la figure 7 . After connecting the drill pipe 16 ' to the drill head 24, the cylinders 102, 104 are actuated to move the barrel away from the drill head, to bring it into the unobstructed position of the drill pipe 24. figure 7 .

A l'aide des figures 9 et 10 , on va maintenant décrire la saisie d'un des tubes de carottage 14' rangé dans le premier carrousel 40 du barillet 30. With the help of figures 9 and 10 , the seizure of one of the coring tubes 14 ' stored in the first carousel 40 of the barrel 30 will now be described .

Sur la figure 9 , le barillet 30 est en position dégagée. Le second carrousel 60 est pivoté autour de l'axe B afin d'amener la découpe 70b de l'ouverture 70 en regard de l'accès 34. Comme on le comprend à l'aide de la figure 9 , la découpe 70b est réalisée de telle manière que, considérée dans un plan perpendiculaire à l'axe de rotation B du barillet 30, la découpe 70b découvre l'échancrure 48b du premier logement 48 dans lequel le tube de carottage 14' est rangé. On comprend donc que la profondeur radiale de la découpe 70b est supérieure à celle des échancrures 68b dans laquelle viennent se loger les tubes de forage 16. On the figure 9 , the barrel 30 is in the released position. The second carousel 60 is pivoted about the axis B in order to bring the cutout 70b of the opening 70 opposite the access 34. As can be understood by means of the figure 9 , the cutout 70b is made such that, considered in a plane perpendicular to the axis of rotation B of the barrel 30, the cutout 70b discovers the notch 48b of the first housing 48 in which the coring tube 14 ' is stored. It is therefore understood that the radial depth of the cutout 70b is greater than that of the notches 68 b wherein are housed the drill pipe 16.

La position du second carrousel 60, dans laquelle la découpe 70b de l'ouverture 70 est en regard de l'accès 34, est appelée position neutre du second carrousel. C'est dans cette position neutre que l'on peut extraire les tubes de carottage radialement hors du barillet.The position of the second carousel 60, in which the cutout 70b of the opening 70 is opposite the access 34, is called the neutral position of the second carousel. It is in this neutral position that one can extract the core tubes radially out of the barrel.

Après que le second carrousel a été amené en position neutre, et qu'un tube de carottage vide a été amené, par rotation du premier carrousel, en regard de l'ouverture 70, cette dernière étant elle-même en regard de l'accès 34 du barillet, les vérins 102, 104 sont actionnés de manière à translater le barillet pour l'amener dans une seconde position de transfert illustrée sur la figure 10 . After the second carousel has been brought to the neutral position, and an empty coring tube has been brought, by rotation of the first carousel, facing the opening 70, the latter being itself opposite the access 34 of the barrel, the cylinders 102, 104 are actuated to translate the barrel to bring it to a second transfer position shown in FIG. figure 10 .

Dans cette seconde position de transfert, l'axe D du tube de carottage 14' est coaxial à l'axe F de forage. C'est dans cette disposition que le dispositif de préhension 90, par le biais de la pince 94, saisit l'extrémité supérieure du tube de carottage 14'. Après la saisie du tube de carottage 14' par le dispositif de préhension 90, le barillet 30 est ramené en position dégagée de la figure 9 , grâce à l'actionnement des vérins 102, 104. In this second transfer position, the axis D of the coring tube 14 ' is coaxial with the drilling axis F. It is in this arrangement that the gripping device 90, through the clamp 94, grasps the upper end of the coring tube 14 '. After the coring tube 14 'has been grasped by the gripping device 90, the barrel 30 is returned to the disengaged position of the figure 9 , thanks to the actuation of the cylinders 102, 104.

En se référant à nouveau aux figures 5 et 6 , on précise que la machine de forage 12 comporte en outre un dispositif de blocage 130, disposé en partie inférieure du bâti permettant de bloquer un tube de forage 130 enfoncé dans le sol S. Ce dispositif de blocage est muni de mors. Il présente une position verrouillée et une position déverrouillée.Referring again to figures 5 and 6 it is specified that the drilling machine 12 further comprises a locking device 130 disposed in the lower part of the frame for locking a drill pipe 130 driven into the ground S. This locking device is provided with jaws. It has a locked position and an unlocked position.

A l'aide des figures 11 à 35 , on va maintenant décrire plus en détail le procédé de carottage du sol S conforme à l'invention mis en oeuvre à l'aide de l'installation de carottage 10 précédemment décrite.With the help of Figures 11 to 35 , Will now be described in more detail coring method of soil S in accordance with the invention implemented using the previously described 10 coring installation.

Par soucis de simplicité, seuls le barillet 30, la tête de forage 24, le dispositif de préhension 90, le dispositif de blocage 130 sont illustrés, de manière schématique. Le barillet 30 est représenté en vue de dessus.For the sake of simplicity, only the barrel 30, the drill head 24, the gripping device 90, the locking device 130 are schematically illustrated. The barrel 30 is shown in plan view.

Dans cet exemple, le barillet 30 est initialement équipé de trente-deux tubes de forage 16, et de trente-deux tubes de carottage 14. Bien entendu, avant les opérations de carottage, les tubes de carottage 14 sont vides.In this example, the barrel 30 is initially equipped with thirty-two drill pipes 16, and thirty-two coring tubes 14. Of course, before the coring operations, the coring tubes 14 are empty.

Dans l'exemple de la figure 11B , un premier tube de forage 160 dans lequel est logé un premier tube de carottage 141 vide, est connecté à la tête de forage 24. Le dispositif de préhension 90 est rétracté, la pince 94 étant située au dessus de la tête de forage. Le dispositif de blocage 130 est en position déverrouillé.In the example of the Figure 11B , a first drill pipe 16 0 in which is housed a first coring tube 14 1 empty, is connected to the drill head 24. The gripping device 90 is retracted, the clamp 94 being located above the drill head . The locking device 130 is in the unlocked position.

On introduit alors dans le sol S le premier tube de forage 160 contenant le premier tube de carottage 141 vide en déplaçant vers le bas la tête de forage 24 selon l'axe de forage F tel que cela est représenté sur la figure 12 . A l'issue de l'introduction dans le sol du premier tube de forage 160 contenant le premier tube de carottage 141 , ce dernier s'est rempli. Le premier tube de carottage 141 plein est illustré en noir sur la figure 12 . The first drill pipe 16 0 containing the first empty coring tube 14 1 is then introduced into the ground S by moving the drill head 24 downwards along the drill axis F as shown in FIG. figure 12 . At the end of the introduction into the ground of the first drill pipe 16 0 containing the first coring tube 14 1 , the latter has filled. The first coring tube 14 1 full is illustrated in black on the figure 12 .

Le dispositif de blocage 130 est ensuite actionné afin de bloquer le premier tube de forage 160 dans le sol. Cette étape, illustrée sur la figure 13 , est toutefois optionnelle.The locking device 130 is then actuated to lock the first drill pipe 16 0 in the ground. This step, illustrated on the figure 13 , however , is optional.

Ensuite, comme illustré sur la figure 14 , la tête de forage 24 est remontée. Le dispositif de préhension est ensuite actionné de manière à faire descendre la pince 94 au travers du tube de forage 160 afin de venir saisir le tube de carottage 141 . Cette étape est illustrée sur la figure 15 . Then, as illustrated on the figure 14 , The drill head 24 is lifted. The gripping device is then actuated so as to lower the clamp 94 through the drill pipe 16 0 to come to grip the coring tube 14 1 . This step is illustrated on the figure 15 .

Ensuite, comme illustré sur la figure 16 , le dispositif de préhension est actionné de manière à relever la pince 94 fixée au tube de carottage plein 141 , le premier tube de forage 160 étant maintenu dans le sol 16 par le biais du dispositif de blocage 130. Then, as illustrated on the figure 16 , the gripping device is actuated to raise the clamp 94 attached to the full core tube 14 1 , the first drill pipe 16 0 being held in the ground 16 through the blocking device 130.

Le barillet 30 est ensuite amené de sa position dégagée à sa seconde position de transfert afin que le premier tube de carottage 141 plein soit rangé dans le premier carrousel 40. On comprend donc que le premier tube de carottage 141 traverse radialement le second carrousel 60 par l'ouverture 70 pour être amené dans un premier logement vide 481 du premier carrousel.The barrel 30 is then brought from its unobstructed position to its second transfer position so that the first coring tube 14 1 full is stored in the first carousel 40. It is thus clear that the first coring tube 14 1 passes radially through the second carousel 60 through the opening 70 to be brought into a first empty housing 48 1 of the first carousel.

Une fois le premier tube de carottage 141 plein rangé dans le premier carrousel 40, le barillet 30 est ramené en position dégagée, comme illustré sur la figure 18 . Once the first coring tube 14 1 is stored in the first carousel 40, the barrel 30 is returned to the disengaged position, as shown in FIG. figure 18 .

Puis on fait pivoter le premier carrousel 40 d'un cran de manière à amener un deuxième tube de carottage 142 vide en regard de l'ouverture 70 (figure 19 ).Then the first carousel 40 is pivoted one notch so as to bring a second coring tube 14 2 empty opposite the opening 70 ( FIG. figure 19 ).

Le barillet 30 est ensuite amené dans sa seconde position de transfert afin que le dispositif de préhension 90 saisisse le deuxième tube de carottage 142 vide (figure 20 ).The barrel 30 is then brought into its second transfer position so that the gripping device 90 grasps the second empty coring tube 14 2 ( figure 20 ).

Sur les figures 21 et 22 , on a illustré l'introduction du deuxième tube de carottage 142 vide dans le premier tube de forage 160 maintenu dans le sol 16. On the figures 21 and 22 There is illustrated the insertion of the second coring tube 14 2 empty in the first drill pipe 16 0 held in the ground 16.

Après que le deuxième tube de carottage 142 a été introduit dans le premier tube de forage 160 , on solidarise le deuxième tube de carottage 142 avec le premier tube de forage 160 . La pince 94 du dispositif de préhension 90 est ramenée en position rétractée (figure 23 ).After the second coring tube 14 2 has been introduced into the first drill pipe 16 0 , the second coring tube 14 2 is secured to the first drill pipe 16 0 . The gripper 94 of the gripping device 90 is returned to the retracted position ( figure 23 ).

Comme illustré sur la figure 24 , le second carrousel est pivoté d'un cran de manière à amener un deuxième tube de forage 161 en regard de l'accès 34 du barillet 30. Le barillet est alors amené en première position de transfert afin de connecter la tête de forage 24 au deuxième tube de forage 161 (figure 25B ). Le barillet 30 est ensuite ramené en position dégagée (figure 25A ).As illustrated on the figure 24 The second carousel is rotated one step so as to bring a second drill tube 16 1 opposite the port 34 of the cylinder 30. The cylinder is then brought into the first transfer position for connecting the drilling head 24 at the second drill pipe 16 1 ( figure 25B ). The barrel 30 is then returned to the unobstructed position ( figure 25A ).

La tête de forage 24 est déplacée de manière à connecter l'extrémité inférieure du deuxième tube de forage 161 à l'extrémité supérieure du premier tube de forage 160 maintenu dans le sol (figure 25B ).The drill head 24 is moved to connect the lower end of the second drill pipe 16 1 to the upper end of the first drill pipe 16 0 maintained in the soil ( 25B ).

Une fois le premier tube de forage 160 connecté au deuxième tube de forage 16 1, le dispositif de blocage est amené en position déverrouillée. Puis la tête de forage 24 est déplacée vers le bas selon l'axe de forage de manière à introduire dans le sol le premier tube de forage, le deuxième tube de forage et le deuxième tube de carottage 142 .Once the first drill pipe 16 0 connected to the second drill pipe 16 1 , the locking device is brought into the unlocked position. Then the drill head 24 is moved downward along the axis of drilling so as to introduce into the ground the first drill pipe, the second drill pipe and the second core tube 14 2 .

Comme on le comprend à l'aide de la figure 26 , suite à l'enfoncement dans le sol du deuxième tube de forage 161 , le deuxième tube de carottage 142 se remplit.As can be understood by using the figure 26 , Following the depression in the floor of the second drill tube 16 1, the second coring tube 14 2 shall fills.

Après avoir verrouillé, à l'aide du dispositif de blocage 130, le deuxième tube de forage 161 dans le sol, on extrait le deuxième tube de carottage 142 plein à l'aide du dispositif de préhension 90 (figure 27 ).After having locked the second drill pipe 161 in the ground with the aid of the blocking device 130, the second coring tube 14 2 is extracted with the aid of the gripping device 90 (FIG. figure 27 ).

Comme illustré sur la figure 28 , le second carrousel est pivoté de manière à l'amener en position neutre. Puis, comme illustré sur la figure 29 , le barillet est amené en seconde position de transfert afin que le deuxième tube de carottage 142 plein soit rangé dans le logement vide du premier carrousel qui était précédemment occupé par le deuxième tube de carottage 142 vide.As illustrated on the figure 28 The second carousel is rotated so as to bring it to neutral. Then, as illustrated on the figure 29 , The barrel is brought into the second transfer position so that the second coring tube 14 2 Full be stored in the empty slot of the first carousel which was previously occupied by the second coring tube 14 2 empty.

Dans cet exemple, les étapes décrites ci-dessus sont successivement répétées jusqu'à ce que tous les tubes de carottage 14 pleins soient rangés dans le premier carrousel 40. L'étape suivante consiste à récupérer les tubes de forage et les ranger dans le second carrousel.In this example, the steps described above are successively repeated until all the coring tubes 14 full are stored in the first carousel 40. The next step consists in recovering the drill pipes and storing them in the second carousel.

Sur la figure 31 on a illustré le début de l'extraction des tubes de forage. A l'aide de la tête de forage, on extrait du sol le trente-troisième tube de forage 1632 , qui est connecté aux autres tubes de forage. Une fois le trente-troisième tube de forage sorti du sol, on actionne le dispositif de blocage 130 afin de maintenir dans le sol le trente-deuxième tube de forage connecté aux autres tubes de forage. On désolidarise le trente-troisième tube de forage 1632 (figure 33 ). On fait tourner le second carrousel afin d'amener un logement libre du second carrousel en regard de l'accès 34 du barillet (figure 34 ) puis on amène le barillet 30 en première position de transfert afin de ranger le trente-troisième tube de forage 1632 dans le second carrousel. Le barillet est ensuite ramené en position dégagée (figure 35 ). On répète ces étapes de manière à extraire et ranger successivement les tubes de forage dans le second carrousel.On the figure 31 the beginning of the extraction of the drill pipes has been illustrated. Using the drill head, soil extracts the thirty-third drill pipe 16 32, which is connected to other drill pipe. Once the thirty-third drill pipe out of the soil, it actuates the locking device 130 to maintain the soil in the thirty-second drill tube connected to other drill pipe. The thirty-third drill pipe 16 32 is disconnected ( figure 33 ). The second carousel is rotated to bring a free housing of the second carousel opposite the access 34 of the barrel ( figure 34 ) and then the barrel 30 is brought to the first transfer position to store the thirty-third drill pipe 16 32 in the second carousel. The barrel is then brought back to the unobstructed position ( figure 35 ). These steps are repeated so as to extract and store successively the drill tubes in the second carousel.

L'installation de carottage est ensuite remontée en surface afin de procéder au traitement des carottes.The coring installation is then raised to the surface in order to proceed with the processing of the cores.

Claims (13)

  1. A geotechnical drilling machine (12) including:
    a drilling head (24) rotating about a first axis;
    means for longitudinally moving the drilling head according to a drilling axis (F), parallel to the first axis;
    a barrel (30) rotating about a second axis (B), parallel to the first axis (A), said barrel including a plurality of first housings (48a, 48b) for receiving a first series of tubes (14), the first tubes (14), and a plurality of second housings (68a, 68b) for receiving a second series of tubes (16), the second tubes (16), the first housings being arranged beside each other according to a first circular line, while the second housings are arranged beside each other according to a second circular line, the first and second circular lines being concentric, the diameter of the first circular line being less than the diameter of the second circular line such that the second housings are arranged about the first housings, the barrel including an access (34) for withdrawal of the tubes from the first and second housings;
    connection means (100) for connecting the drilling head (24) at least with one of the second tubes (16) contained in the barrel (30);
    the drilling machine being characterized in that the barrel (30) includes a first carousel (40) and at least one second carousel (60), separate from the first carousel, the first and second carousels (40, 60) being coaxial and arranged to pivot relative to each other about the second axis (4b), the first carousel being arranged inside the second carousel and comprising the first housings, while the second carousel comprises the second housings.
  2. The drilling machine according to claim 1, characterized in that the connection means (100) further include moving means (102, 104) for positioning the drilling head above the barrel.
  3. The drilling machine according to claim 2, wherein the moving means (102, 104) are configured for moving the barrel according to a direction (X) perpendicular to the second axis (B) for positioning the access of the barrel below the drilling head.
  4. The drilling machine according to any one of claims 1 to 3, characterized in that the connection means (100) further include an extraction device (110) to lift at least one of the second tubes towards the drilling head.
  5. The drilling machine according to any one of claims 1 to 4, characterized in that the second carousel (60) includes at least one radially traversing opening (70) allowing the first tubes to be extracted from or radially introduced into the first carousel by passing through said opening.
  6. The drilling machine according to claim 5, characterized in that the second carousel has a neutral position in which the opening (70) is positioned facing the access (34) of the barrel.
  7. The drilling machine according to any one of the preceding claims, characterized in that it further includes a gripping device (90) configured for gripping and moving one of the first tubes.
  8. The drilling machine according to claim 7, characterized in that the gripping device (90) traverses the drilling head (24) according to the drilling axis (F).
  9. The drilling machine according to any one of the preceding claims, characterized in that it includes a first motor (80) to turn the first carousel (40) and a second motor (82) to turn the second carousel (60) independently of the first carousel (40).
  10. The drilling machine according to any one of claims 1 to 9, characterized in that it further includes a blocking device (130) for blocking at least one tube embedded in the ground.
  11. A core sample extraction installation (10) of ground (S) including:
    a geotechnical drilling machine according to any one of the preceding claims;
    a plurality of drilling tubes (16) capable of being stowed in the second housings;
    a plurality of core sample extraction tubes (14) capable of being stowed in the first housings, the core sample extraction tubes being configured to be introduced into the drilling tubes and be secured to said drilling tubes; and
    the drilling machine, further including a gripping device (90) configured for gripping and moving the core sample extraction tubes according to the drilling axis.
  12. A core sample extraction method of ground (S) wherein:
    a core sample extraction installation (10) is provided according to claim 11;
    a first drilling tube (160) containing a first empty core sample extraction tube (141) is introduced into the ground;
    the first full core sample extraction tube is extracted leaving the first drilling tube in the ground, the first full core sample extraction tube is stowed in a first empty housing of the first carousel, then the first carousel is turned;
    a second empty core sample extraction tube stowed in the first carousel is gripped, introduced into the first drilling tube, and the second core sample extraction tube is secured to the first drilling tube;
    the drilling head is connected to a second drilling tube stowed in the second carousel, the second drilling tube is extracted from the second carousel and the second drilling tube is fixed to the first drilling tube;
    the drilling head is moved to embed the assembly consisting of the first drilling tube, the second drilling tube and the second empty core sample extraction tube in the ground;
    the second full core sample extraction tube is extracted leaving the first and second drilling tubes in the ground, the second full core sample extraction tube is stowed in a first empty housing of the first carousel.
  13. The core sample extraction method according to claim 12, wherein the second carousel includes an opening for radial passage of the drilling tubes via the second carousel, a method wherein, prior to gripping the second empty core sample extraction tube stowed in the first carousel, the second carousel is turned to guide the opening facing the access of the barrel, and the first carousel is turned to guide the second empty core sample extraction tube facing the opening.
EP14184774.9A 2013-09-18 2014-09-15 Drilling machine having a barrel provided with several carousels Active EP2851503B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1358987A FR3010727B1 (en) 2013-09-18 2013-09-18 DRILLING MACHINE COMPRISING A BARREL PROVIDED WITH MULTIPLE CARROUSELS

Publications (2)

Publication Number Publication Date
EP2851503A1 EP2851503A1 (en) 2015-03-25
EP2851503B1 true EP2851503B1 (en) 2016-05-18

Family

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Application Number Title Priority Date Filing Date
EP14184774.9A Active EP2851503B1 (en) 2013-09-18 2014-09-15 Drilling machine having a barrel provided with several carousels

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EP (1) EP2851503B1 (en)
FR (1) FR3010727B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018195028A1 (en) * 2017-04-19 2018-10-25 Bly Ip, Inc. Integrated drill, rod handler and rod magazine apparatus
CN110924886A (en) * 2019-11-25 2020-03-27 南华大学 Deep sea mining is with fidelity coring device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11982145B2 (en) * 2018-12-20 2024-05-14 Bauer Maschinen Gmbh Underwater drilling device and method for procuring drill cores of a bed of a body of water
CN110656894A (en) * 2019-11-26 2020-01-07 王海峰 Drilling rod circulation dress card storage case
FR3118091B1 (en) * 2020-12-18 2022-12-23 Soletanche Freyssinet Protective cage for barrel drilling machine, and corresponding protection method
WO2023170445A1 (en) * 2022-03-07 2023-09-14 Comacchio Spa Drilling machine with improved carousel loading device

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Publication number Priority date Publication date Assignee Title
US3103981A (en) 1961-06-08 1963-09-17 Longyear E J Co Wire line core barrel
GB2155974B (en) * 1984-03-14 1987-03-25 Paul Bello Pipe carousel for well-drilling rig
US5174389A (en) * 1991-07-12 1992-12-29 Hansen James E Carousel well rig
NO304160B1 (en) * 1997-02-21 1998-11-02 Edm Engineering & Drilling Mac Device for storing rudder
EP0860582B1 (en) * 1997-02-25 2001-10-04 Hütte & Co. Bohrtechnik Gesellschaft mit beschränkter Haftung Method and apparatus for drilling with dual tube drillstring

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018195028A1 (en) * 2017-04-19 2018-10-25 Bly Ip, Inc. Integrated drill, rod handler and rod magazine apparatus
CN110924886A (en) * 2019-11-25 2020-03-27 南华大学 Deep sea mining is with fidelity coring device
CN110924886B (en) * 2019-11-25 2021-08-20 南华大学 Deep sea mining is with fidelity coring device

Also Published As

Publication number Publication date
EP2851503A1 (en) 2015-03-25
FR3010727A1 (en) 2015-03-20
FR3010727B1 (en) 2015-10-02

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