EP3719246B1 - Procédé de production d'un forage dans le sol et appareil de forage associé - Google Patents

Procédé de production d'un forage dans le sol et appareil de forage associé Download PDF

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Publication number
EP3719246B1
EP3719246B1 EP19167137.9A EP19167137A EP3719246B1 EP 3719246 B1 EP3719246 B1 EP 3719246B1 EP 19167137 A EP19167137 A EP 19167137A EP 3719246 B1 EP3719246 B1 EP 3719246B1
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EP
European Patent Office
Prior art keywords
boring
drilling
boring tool
tool
bore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19167137.9A
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German (de)
English (en)
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EP3719246A1 (fr
Inventor
Werner Dipl-Ing. KORHERR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bauer Maschinen GmbH
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Bauer Maschinen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP19167137.9A priority Critical patent/EP3719246B1/fr
Priority to CN202080023920.9A priority patent/CN113574243B/zh
Priority to PCT/EP2020/057304 priority patent/WO2020200770A1/fr
Publication of EP3719246A1 publication Critical patent/EP3719246A1/fr
Application granted granted Critical
Publication of EP3719246B1 publication Critical patent/EP3719246B1/fr
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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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/003—Drilling with mechanical conveying means
    • E21B7/005—Drilling with mechanical conveying means with helical conveying means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/06—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers for observation while placing
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/04—Measuring depth or liquid level

Definitions

  • the invention relates to a method for creating a borehole in the ground with a drilling device, in which a drill rod is driven in rotation, to the lower end of which a first drilling tool is detachably attached via a connecting device, wherein a drilling depth is detected by means of a measuring device, according to the preamble of claim 1.
  • the invention further relates to a drilling device with a rotatably driven drill rod and a drilling tool which is fastened to the drill rod via a connecting device, according to the preamble of claim 12.
  • Drilling equipment for creating a borehole in the ground with a drilling tool at the lower end of a drill rod has been known for a long time.
  • a drilling depth is usually determined by determining the travel path of a drilling equipment carriage along a mast.
  • a uniform drilling tool is used, such a relative measurement of the travel path of the drilling carriage allows a largely reliable conclusion to be drawn about a drilling depth.
  • the resulting measurement inaccuracies were taken into account when designing a borehole by providing sufficient design safety, i.e. by providing certain over-dimensions.
  • the invention is based on the object of specifying a method for creating a borehole in the ground and a drilling device with which a borehole can be created particularly precisely.
  • the method according to the invention is characterized in that the drilling tool is initially placed on a reference surface and that this position is used as a reference height of the measuring device, that in the course of creating the bore a first drilling tool is removed and at least one second drilling tool is attached to the drill rod by means of the connecting device, the axial length of which has a length difference to the length of the first drilling tool, and that a correction factor is provided by which the length difference is taken into account in the measurements by the measuring device.
  • One aspect of the invention can be seen in setting the measuring device to a reference at the start of a drilling operation, whereby the drilling tool on the drill rod is placed in a defined position on the ground surface, i.e. on a planum.
  • the measured values of the measuring device can thus reliably refer to a predetermined fixed position. In this way, a particularly precise measurement of the drilling depth can be carried out during the drilling process.
  • a preferred embodiment of the invention consists in that the measuring device is coupled to a lifting device, by means of which the drill rod with the drilling tool is moved along a drilling direction.
  • An adjustment path of the lifting device can thus be used to determine the borehole depth.
  • the lifting device can have a lifting cylinder or preferably a cable winch. In the case of a cable winch, the lifting path can be determined by detecting a rotation of a winch drum.
  • the method is carried out discontinuously, with the drilling tool being repeatedly introduced into the borehole and then withdrawn from it, in particular in order to empty and/or change the drilling tool.
  • calibration in relation to the ground surface is particularly advantageous, since when the drilling tool is withdrawn from the borehole, soil material can fall from the borehole wall onto the borehole bottom, so that a level of the borehole bottom may change and related measurements may be affected.
  • a first drilling tool is removed and at least one second drilling tool is attached to the drill rod by means of the connecting device, the axial length of which has a length difference to an axial length of the first drilling tool, and a correction factor is provided by which the length difference is taken into account in the measurements by the measuring device.
  • Changing a drilling tool is particularly necessary when different soil layers are drilled through. For example, for hard soil layers, the use of a rock drill with roller-shaped removal tools may be necessary, while for sandy or cohesive soil layers, a drilling tool with removal cutting edges is required.
  • a control unit is provided which is connected to a database in which the axial lengths of the specified drilling tools are stored.
  • the database can be a mobile data storage device or a permanently installed data storage device in the device or a remote database, for example in a remote control center, with a connection being made via a remote data connection.
  • the stored lengths can be used to carry out a reliable length correction by selecting the drilling tool used accordingly.
  • particularly reliable detection of the current drilling tool is achieved by providing a detection device by which a drilling tool is automatically detected and the correction factor is determined.
  • the tool can be detected, for example, using a camera with associated detection software. It can be particularly useful for an identification device to be arranged on the drilling tool, such as an RFID chip, which can be automatically queried.
  • the control unit can thus independently detect a tool change and the tool that has been replaced and independently provide a correction for the drilling depth measurement if the tool length is different.
  • a fundamentally independent aspect of the invention is that a casing with at least one drill pipe is formed at the borehole, with an upper drill pipe projecting upwards above the ground surface, and that the projection of the drill pipe above the ground surface is measured by the measuring device when the drilling tool is placed on it.
  • the method according to the invention can thus be used for precise detection of the casing. In particular, it can be determined exactly how far an inserted drill pipe projects above the ground surface, which also makes it possible to directly deduce how deep a lower end of the drill pipe is inserted into the ground.
  • a particularly useful variant of the invention for the machine operator is that a display unit is provided, which shows a current drilling depth and/or a current depth of the casing.
  • the drilling depth and the depth of the casing are displayed together, so that the operator always has reliable information about whether the drilling tool is leading or lagging behind the casing. This is useful, for example, to avoid a ground failure when drilling through loose, groundwater-bearing soil layers. or for wear behaviour when drilling through rocky soil layers.
  • the borehole is filled with a preferably hardenable mass and a foundation element is created.
  • the foundation element can in particular be a foundation pile which is formed with a concrete mass.
  • the invention further comprises a drilling device which is characterized in that it is designed to carry out the method described above.
  • the drilling device can in particular have a carrier device with an approximately vertically aligned mast, on which a drilling rod with the drilling tool can be driven in rotation via a drilling drive carriage and can be moved in the drilling direction.
  • a first drilling tool 24 designed as a drilling bucket or box drill is shown, which is detachably attached via a connecting device 23 to a drilling rod 22 of a drilling device 20, not shown in detail.
  • the first drilling tool 24 is placed flat on a floor surface 7 of a floor 5.
  • a cutting device can be at least partially inserted into the floor 5, as Fig.2 can be seen.
  • the first drilling step has a depth of 0.5 m, which is indicated on a display unit 30.
  • the first drilling tool 24 is withdrawn from the bore 10 and moved to a spaced emptying position, as in Fig.4 is indicated.
  • the drilling depth achieved in the first drilling step is measured by means of a measuring device via the lifting device (not shown) for vertically moving the drilling rod 22 on the drilling device 20 and is displayed to a machine operator on the display unit 30.
  • the drilling depth after the first drilling step is 0.5 m.
  • the display unit 30 can display Fig.4
  • the current height of the drilling tool 24 above the ground surface 7 recorded by the measuring device can also be displayed, which in the illustrated embodiment is 0.8 m.
  • the first drilling tool 24 can be moved back into the bore 10 to carry out a further drilling step in order to carry out a second drilling step of a further 0.5 m.
  • This further drilling step of 0.5 m is also displayed to an operator in the display unit 30, together with the current position of the lower edge of the drill bit of 1 m.
  • the display unit 30 contains a field for the drilling depth after the previous drilling step 31, a field for the current drilling progress 32, a field for the position of the lower edge of the drilling tool in relation to the construction site 33 and a field for the position of the lower edge of the drilling tool according to a changing reference 34. Furthermore, a position of the drilling tool in the borehole is graphically displayed in field 36.
  • the first drilling tool 24 can then be withdrawn from the borehole 10 and moved to an emptying position.
  • the total drilling depth achieved of -1 m relative to the ground surface 7 is now displayed in the display unit 30.
  • Fig.7 In addition to the height of the drilling tool of 0.8 m above the ground surface 7, the length of the first drilling tool 24 is also shown at 1 m.
  • the first drilling tool 24 is removed from the drilling rod 22 by releasing the connecting device 23.
  • the reference of the measuring device to the height of the drilling rod 22 is retained in the control unit.
  • a second drilling tool 26 can be detachably attached to the connecting device 23 of the drilling rod 22.
  • the second drilling tool 26 is an auger drill in the embodiment shown.
  • the second drilling tool 26 has a total length of 0.6 m, which represents a difference in length of 0.4 m compared to the axial length of the first drilling tool 24.
  • the axial lengths of the first drilling tool 24 and the second drilling tool 26 are stored in a database of a control unit of the drilling device 20, as shown schematically in Fig.10
  • the tool change can be carried out in the control unit manually by a machine operator or automatically by the control unit itself if there is a corresponding detection or recording device for the drilling tools 24, 26.
  • a correction factor for the measuring device and thus also for the display on the display unit 30 can be determined on the basis of the length difference of 0.4 m.
  • a corrected height of the second drilling tool 26 relative to the ground surface 7 of 1.2 m is then displayed in the display unit 30.
  • casing can be provided in the borehole 10 by inserting at least one drill pipe 14, as clearly shown in Fig. 11
  • the drill pipe 14 can be screwed into the bore 10 by a casing machine (not shown).
  • the first drilling tool 24, with which the reference has been set can be an upper side of the drill pipe 14, which protrudes from the ground surface 7, as clearly shown in Fig. 12 is shown.
  • the position and height indication of the first drilling tool 24 thus simultaneously indicates the height of the projection of the drill pipe 14 relative to the ground surface 7.
  • the display unit 30 can also indicate the drilling depth of the borehole 10, so that an operator of the drilling device 20 can immediately see whether the casing has been laid down to the bottom of the borehole 10 or, as in this example, the drill pipe 14 has been screwed in 0.50 m deeper than the drill bottom. If, as in the prior art, the reference is reset, here to the top edge of the drill pipe, field 34 shows the position of the bottom edge of the drilling tool in relation to the new reference. You can therefore see the new height, which in the example shown deviates by 1.50 m from the actual height, while field 33 still shows the correct height of the drilling tool 24. There is also a field for the advance of the drill pipe 35.

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

Claims (12)

  1. Procédé pour réaliser un forage (10) dans le sol (5) avec un engin de forage (20), dans lequel une tige de forage (22) est entraînée en rotation, à l'extrémité inférieure de laquelle un outil de forage (24, 26) est fixé de manière amovible par un dispositif de liaison (23), une profondeur de forage étant détectée au moyen d'un dispositif de mesure,
    caractérisé
    en ce que l'outil de forage (24, 26) est placé au début sur une surface de référence et en ce que cette position est utilisée comme hauteur de référence du dispositif de mesure,
    en ce que, au cours de la réalisation du forage (10), un premier outil de forage (24) est enlevé et, au moyen du dispositif de liaison (23), au moins un deuxième outil de forage (26) est fixé sur la tige de forage (22), dont la longueur axiale présente une différence de longueur par rapport à la longueur du premier outil de forage (24), et
    en ce qu'il est prévu un facteur de correction par lequel la différence de longueur est prise en compte lors des mesures par le dispositif de mesure.
  2. Procédé selon la revendication 1,
    caractérisé
    en ce que le dispositif de mesure est couplé à un dispositif de levage, par lequel la tige de forage (22) avec l'outil de forage (24, 26) est déplacée le long de la direction de forage.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé
    en ce que le procédé est effectué de manière discontinue, l'outil de forage (24, 26) étant introduit de manière répétée dans le forage (10) et retiré de celui-ci, en particulier pour vider ou changer l'outil de forage (24, 26).
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé
    en ce qu'il est prévu une unité de commande qui est en liaison avec une banque de données dans laquelle sont enregistrées les longueurs axiales des outils de forage (24, 26) prédéfinis.
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé
    en ce qu'il est prévu une unité d'affichage (30) avec laquelle les outils de forage (24, 26) prévus sont affichés à un opérateur et que l'opérateur sélectionne l'outil de forage (24, 26) à changer au moyen d'un dispositif de sélection lors d'un changement d'outil de forage.
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé
    en ce qu'il est prévu un dispositif de détection par lequel un outil de forage (24, 26) est détecté automatiquement et le facteur de correction est déterminé.
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé
    en ce que sur le forage (10), un tubage est formé avec au moins un tube de forage (14), un tube de forage supérieur (14) dépassant vers le haut par rapport à la surface du sol (7), et
    en ce que, par la mise en place de l'outil de forage (24, 26), le dispositif de mesure le dépassement du tube de forage (14) par rapport à la surface du sol (7).
  8. Procédé selon la revendication 7,
    caractérisé
    en ce que des données concernant le nombre et la longueur des tubes de forage (14) introduits peuvent être entrées dans une unité de commande, et
    en ce que l'unité de commande détermine une profondeur du tubage à l'aide des données introduites et du dépassement mesuré.
  9. Procédé selon l'une des revendications 1 à 8,
    caractérisé
    en ce qu'il est prévu une unité d'affichage (30) par laquelle une profondeur de forage actuelle et/ou une profondeur actuelle du tubage est affichée.
  10. Procédé selon l'une des revendications 1 bis 9,
    caractérisé
    en ce que le forage (10) est rempli d'une masse de préférence durcissable et qu'un élément de fondation est réalisé.
  11. Procédé selon l'une des revendications 1 bis 10,
    caractérisé
    en ce que d'autres paramètres, tels que la vitesse de rotation, le moment de rotation, la progression, les quantités de suspension de forage, sont saisis sur le trajet du forage (10) et sont enregistrés et/ou affichés en fonction de la profondeur de forage.
  12. Engin de forage (20) avec une tige de forage (22) pouvant être entraînée en rotation et un premier outil de forage (24, 26) qui peut être fixé de manière interchangeable sur la tige de forage (22) par l'intermédiaire d'un dispositif de liaison (23), avec un dispositif de mesure pour détecter la profondeur de forage,
    un deuxième outil de forage (24, 26) de longueur axiale différente du premier outil de forage (24, 26) pouvant être fixé à la tige de forage (22) au moyen du dispositif de liaison (23),
    caractérisé
    en ce que l'engin de forage (20) est conçu pour mettre en oeuvre un procédé selon l'une des revendications 1 à 11 et comprend à cet effet
    des moyens pour mettre en place une hauteur de référence pour le dispositif de mesure en posant l'un des outils de forage (24, 26) sur une surface de référence, et des moyens prévus pour détecter un facteur de correction relatif aux différentes longueurs des outils de forage lors d'un changement d'outil de forage.
EP19167137.9A 2019-04-03 2019-04-03 Procédé de production d'un forage dans le sol et appareil de forage associé Active EP3719246B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19167137.9A EP3719246B1 (fr) 2019-04-03 2019-04-03 Procédé de production d'un forage dans le sol et appareil de forage associé
CN202080023920.9A CN113574243B (zh) 2019-04-03 2020-03-17 用于在地面中生成孔的方法和为此的钻孔器具
PCT/EP2020/057304 WO2020200770A1 (fr) 2019-04-03 2020-03-17 Procédé pour la création d'un trou de forage dans le sol et appareil de forage à cette fin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19167137.9A EP3719246B1 (fr) 2019-04-03 2019-04-03 Procédé de production d'un forage dans le sol et appareil de forage associé

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EP3719246A1 EP3719246A1 (fr) 2020-10-07
EP3719246B1 true EP3719246B1 (fr) 2024-05-29

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EP (1) EP3719246B1 (fr)
CN (1) CN113574243B (fr)
WO (1) WO2020200770A1 (fr)

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Also Published As

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WO2020200770A1 (fr) 2020-10-08
EP3719246A1 (fr) 2020-10-07
CN113574243B (zh) 2024-05-03
CN113574243A (zh) 2021-10-29

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