EP1026364B1 - Elément profilé pour un équipement de forage rotatif et tige de forage comportant au moins un tronçon profilé - Google Patents
Elément profilé pour un équipement de forage rotatif et tige de forage comportant au moins un tronçon profilé Download PDFInfo
- Publication number
- EP1026364B1 EP1026364B1 EP00400190A EP00400190A EP1026364B1 EP 1026364 B1 EP1026364 B1 EP 1026364B1 EP 00400190 A EP00400190 A EP 00400190A EP 00400190 A EP00400190 A EP 00400190A EP 1026364 B1 EP1026364 B1 EP 1026364B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drill pipe
- section
- drill
- axis
- profiled
- 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.)
- Expired - Lifetime
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 88
- 230000003247 decreasing effect Effects 0.000 claims abstract description 13
- 230000007423 decrease Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 30
- 238000011144 upstream manufacturing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 7
- 238000000605 extraction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000004459 forage Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 241001416181 Axis axis Species 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
Definitions
- the invention relates to a profiled element for an equipment of rotary drilling and in particular a profiled section of a rod of a train of rotary drill rods.
- Such rod trains can in particular make it possible to achieve deviated drilling, that is to say drilling which can be varied inclination relative to the vertical or the direction in azimuth, during the drilling.
- a rod drilling having at least one bearing zone having a portion support center and two end sections on either side of the central support having on their outer surface at least one groove arranged in a helix and whose cross section has a undercut part.
- the bearing area of the drill stem that has a diameter greater than the diameter of the end sections comes in contact with the wall of the borehole and ensures a certain reduced friction between the drill pipe and the wall of the drill hole drilling.
- End sections with hydraulic profiles enable the circulation of the drilling fluid and lift off the debris hanging on the wall of the borehole.
- the supporting portions of the drill pipe generally comprise grooves allowing the passage of drilling fluid between the parts of support and the wall of the borehole.
- the drilling fluid circulating in these grooves in an axial direction has virtually no effect on the reduction of friction between the support portions of the drill pipe and the wall of the hole.
- the effect of the supporting portions of the drill stem on the friction reduction is therefore limited.
- Bearings are known in which the friction can be reduced up to very low levels, by hydrodynamic effect of a fluid put in circulation between the friction surfaces of the bearing.
- hydrodynamic drilling fluid between the bearing surfaces of the stem drilling and the hole wall could not be obtained.
- elements for drilling equipment such as drill rods having a cylindrical overall shape that is to say having a cylindrical outer shell surface, which comprise protruding parts and recessed parts on their outer surface arranged in the form of propellers having the axis of rotation of drilling equipment.
- Such shaped shapes with parts protrusions and recessed parts in the form of propellers particular to improve the circulation of drilling fluid in space ring delimited between the equipment and the borehole.
- these shaped elements whose cross section is constant according to the axial longitudinal direction of the drilling equipment and the diameter is smaller than the diameter of the borehole, bring no solution with regard to the realization of low-friction bearings for guiding equipment or drill pipe.
- the object of the invention is therefore to propose a profiled element for rotary drilling equipment having a global form of revolution and an axis directed along the axis of rotation of the borehole, as well as protruding parts and recessed parts in radial directions on its outer surface in substantially shaped the axis of rotation of the drilling equipment, this shaped element in particular to reduce the friction between drilling equipment and a wall of a borehole and limit the risk of jamming of the drilling equipment during a recovery of the equipment inside the borehole.
- At least one of the features geometrical and dimensional dimensions of the recessed parts and Radial projections vary in the axial direction of the element.
- FIG. 1 there is shown a drill pipe designated generally by the reference 1 and constituting an element of a train of drill rods in which successive drill pipes can be connected by mutual screwing of their end parts.
- the stem 1 has an upper end portion 2a constituting an element of female screw connection and a lower end part 2b constituting a male screw connection element.
- the threaded part of the frustoconical male connecting member 2b is intended for to engage by screwing in an end connection part upper part of a drill stem, similar to part 2a of rod 1 and having a threaded portion of frustoconical shape.
- the rod 1 comprises at least one and for example three sections profiles 3 of identical shape which are made according to the principle of the invention.
- the profiled sections 3 whose external surface is from revolution to straight or curved generators, are distributed along the length of the drill rod 1 substantially equidistant from one another in axial longitudinal direction of the drill pipe.
- the upper end portions 2a and lower 2b of the drill stem may also comprise variable profiled parts made according to the principle of the invention.
- the drill pipe has a generally tubular shape cylindrical, the envelope of the outer surface of the rod being a cylinder, with a variable outer diameter following the successive sections of the drill rod.
- the drill rod 1 has an axis 4 around which the rod is rotated in the direction represented by the closed curved arrow 5, when the rod is connected to a drill string performing rotary drilling a hole 6 inside a geological formation 7.
- a drilling fluid flows from top to bottom at the inside of the drill string, to the drill bit connected to the rod of the train of the lowest rods in the bottom of the borehole. drilling then flows from bottom to top, from the bottom of the hole 6, in the annulus 8 of the borehole, that is to say in the annular space between the drill string and the wall of the hole 6. an arrow 9, the flow of drilling fluid in the annular 8, around the stem 1.
- FIG. 2 shows a profiled section 3 of the rod of drilling 1 which comprises 3 successive parts 10, 11 and 12 arranged at the following each other in the axial direction 4 of the drill pipe, in going from the bottom up.
- the lower part 10 of the profiled section 3 is produced according to the French patent application 97 03207 and includes recessed portions or grooves 13 arranged in helices having axis axis 4 of the drill rod 1, whose cross section by a plane perpendicular to the axis 4 of the drill pipe has a part in undercut located towards the rear of the groove, considering the direction rotation 5 of the drill rod.
- the profiled part 10 optimally activating the flow of drilling fluid and drilling debris in the annular 8 of the borehole. This considerably improves cleaning the ring finger and reduces friction between the train of rods and the borehole, as explained in the application for patent recalled above.
- the profile 10 comprising hollow parts constituted by the grooves 13 and projecting parts 14 separating the grooves 13 has geometric characteristics and substantially uniform dimensions according to the length of the part 10.
- the grooves 13 and the protruding ribs 14 have widths in the circumferential direction substantially constant and the inclination of the helices constituted by the grooves 13 and the ribs 14 is constant in the axial direction of the rod 4.
- the profiled section with uniform section 10 that is not in contact with the wall of the borehole and which is not made according to the invention does not make it possible to transform displacements or axial forces into displacements or circumferential forces due to a modification Dimensional or geometric profile of hollow or projecting profiles following propellers.
- the part 10 made according to the patent application 97 03207 can however, to usefully combine with parts 11 and 12 carried out following the invention to obtain improved results.
- the part variable section 11 of the section 3 of the drill pipe comprises parts in radial projections or ribs 15 and recessed portions or grooves 16 each disposed between two portions 15 in radial projections.
- Both the radial projecting parts 15 and the grooves in 16 are arranged in the form of propellers having the axis 4 of the axis stem 1.
- the profiled portion 11 of the section 3 of the drill pipe comprises example 5 projecting parts 15 arranged according to 5 propellers having for axis the axis 4 separated two by two by 5 grooves 16 also arranged next 5 propellers having axis axis 4 of the drill pipe.
- each of the ribs projection 15 is arranged in the extension of a projecting rib 14 of the profiled portion 10 of the section 3.
- each of the grooves 16 of the profiled portion 11 is disposed in the extension of a groove 13 of the profiled portion 10 of the section 3.
- the helices along which the ribs 14 and the grooves 13 of the profiled part 10 are arranged have an angle of inclination ⁇ 1 with respect to the transverse plane perpendicular to the axis 4 of the drill string.
- the ribs 15 and the grooves 16 of the profiled portion 11 are arranged in helices having an inclination angle ⁇ 2 relative to the transverse plane perpendicular to the axis 4 of the drill pipe.
- the profiled portions 10 and 11 are made so that the angle ⁇ 1 is greater than the angle ⁇ 2 .
- the grooves 16 of the profiled part 11 have a width in the circumferential direction decreasing in the axial direction of the drill pipe and in the direction from bottom to top, that is to say in the direction of circulation of the drilling fluid in the annular ring 8.
- the projecting ribs 15 of the profiled portion 11 have a width in the increasing circumferential direction, in the axial direction of the drill pipe and in the direction from bottom to top.
- the rod 1 has, at the level of the variable profiled portion 11, a diameter maximum outside diameter greater than the outside diameter of the profiled parts 10 and 12 placed on either side of the variable profiled portion 11.
- the maximum outside diameter of the profiled part 11 is little less than inner diameter of the borehole 6, so that the ring finger 8 presents a small radial width in the region of the profiled part 11.
- FIG. 5 shows in cross section the part variable profile 11 which comprises along the circumference of the stem of drilling, five parts in radial projections 15 or separate ribs two to two by a hollow part or a groove 16.
- the sections transverse grooves 16 may have a shape asymmetrical, the inclination of the leading edge of the groove 16 in the direction of rotation given by the curved arrow 5 being different from the angle of inclination of the trailing edge.
- the tangent to the leading edge of the cross section of the groove 16 makes an angle ⁇ 1 with the radius of the drill stem leading to the end of the leading edge.
- the tangent to the trailing edge makes an angle ⁇ 2 with the radius of the drill pipe leading to the end of the edge of leak.
- ⁇ 1 is less than ⁇ 2, which seems to be favorable design for a hydrodynamic bearing effect between the profiled portion 11 of the drill pipe and the wall of the borehole 6.
- the drilling fluid circulating in the ring, during the drilling in the direction from bottom to top is guided by the grooves 16, at the level of the profiled portion 11 of the section 3.
- the drilling fluid is guided upstream of the profiled part 11 by the grooves 13 of the part 10. Because the grooves 16 of the profiled part 11 are in the extension of the grooves 16 of the profiled part, the grooves 16 are fed with drilling fluid from the grooves 13.
- FIG. 2 shows by the arrow 17 the circulation of the drilling fluid in one of the grooves 16 of the profiled portion 11. that the width and therefore the section of the groove 16 decreases in the direction of circulation of the drilling fluid, currents occur gradually circumferential deflections 18 on the circulation of the constituent drilling fluid leakage currents.
- the fluid leakage currents 18 of drilling are established between the wall of the borehole 6 and the surface outer portion of the profiled portion 11 of the drill pipe.
- the profiled portion upper section 12 of the profiled section 3 of the drill pipe comprises ribs radially projecting 20 separated two by two by parts in hollow or grooves 19.
- the radially projecting ribs 20 are arranged in the extension of the ribs 14 and 15 of the respective profiled parts 10 and 11 of the drill rod.
- the hollow parts 19 are in the extending the grooves 13 and 16 of the profiled parts 10 and 11.
- the ribs 20 are arranged in helices having the axis the axis 4 of the drill pipe whose angle of inclination ⁇ 'varies so continuous between a minimum value ⁇ '1 and a maximum value ⁇ '2, less than or equal to 90 ° when moving up and down.
- variable profiled portion 12 of the section 3 of the drill pipe comprises 5 successive ribs 20 separated in pairs by a recessed portion 19.
- the cross section of the ribs 20 comprises an end portion outer ring substantially of radius R n and the grooves 19 have an inner portion or bottom of substantially circular shape having a radius R r .
- each of the rods of the drill string of drilling such that the rod 1 is likely to come into contact with a obstacle such as debris or asperity 21 (shown in FIGS. and 6) protruding inwardly from the wall of the borehole 6.
- the obstacle 21 protruding may cause a blockage and a jamming of the drill pipe during its ascent.
- the obstacle 21 in contact with a recessed portion of the profile 12 exerts on this profile a twisting torque increasing because the angle of inclination of the propellers according to which the ribs are arranged 20, with respect to a horizontal transverse plane is decreasing from high to low.
- the torque exerted by the obstacle on the profiled portion 12 of the rod of drilling produces a slight twisting of the drill rod and a displacement of the rod in the borehole which allows the unlocking of the rod.
- the angle of inclination ⁇ 'of the ribs 20 varies continuously in the axial direction, to go from a value ⁇ '1 to the end lower part of the profiled part 12 to a value ⁇ '2 close to 90 ° to the upper end of the profiled part 12. Therefore, during the traction on the rod for its ascent inside the hole, the obstacle 21 protruding relative to the wall of the hole easily engages between the ribs 20 to the upper end of the profiled wall 12 and can be guided in a groove 19 facilitating sliding.
- the end portions upper and lower respectively 2a and 2b of the drill pipe comprise two successive parts 23a and 24a or 23b and 24b presenting slightly different diameters.
- the smaller diameter walls 23a and 23b of the ends of connection 2a and 2b of the drill pipe comprise the threaded portions connecting the rod such as the frustoconical male part Visible in FIG. 8.
- the portion 23a with a smaller diameter of the upper end 2a has a tapped internal bore of form frustoconical for receiving a threaded end of form frustoconical section of a second drill rod similar to the threaded frustoconical 25 shown in FIG. 8.
- the larger diameter portion 24a or 24b of the end of connection of the drill pipe may have ribs and grooves similar to the ribs and grooves 15 and 16 of the profiled portion variable 11 which has been described above in the case of a profiled section disposed in a portion of the intermediate drill pipe between these ends.
- each of the profiled sections preferably comprises a cleaning profile of the borehole similar to profile 10, a variable profile similar to the profile 11 having grooves with decreasing section in the direction of circulation of the drilling fluid, to obtain a bearing effect hydrodynamic and a variable profile similar to the 12 profile facilitating extraction of the drill pipe.
- the three profiles 10, 11 and 12 must be arranged in this order, in the direction of circulation of the drilling fluid.
- the Archimedean screw effect of the debris cleaning profile allows to activate the circulation of the drilling fluid upstream of the profile 11 whose grooves 16 are thus efficiently supplied with drilling fluid, which improves the hydrodynamic bearing effect of the profile 11.
- the profile 12 protects the profiled parts 11 and 10, when extraction of the drill pipe, the obstacles being guided between the grooves 20 of the profile 12 and producing a slight rotation of the rod of drilling allowing its release.
- the profiled portions 11 have an outside diameter greater than the maximum outside diameter profiled parts 10 and 12.
- the diameter of the profiled parts 11 constitutes the maximum diameter of the drill pipe so that the drill rod leans on the walls of the borehole through profiled portions 11 constituting hydrodynamic bearings.
- Profiles 10 and 12 have a lower maximum outside radius of h1 or h2 to the maximum outside radius of the profiled parts. way, the profiled parts 10 and 12 are not likely to come in contact with the wall of the borehole.
- the profiled parts 10 ensure activation of the circulation of the drilling fluid in the ring finger and a detachment and training debris.
- End portions such as 2a and 2b of the drill stem as well as that the ribs 15 may be covered with a layer of material such as tungsten carbide and have large sections diameter 24a and 24b whose diameter is little less than or equal to diameter of the profiled parts 11, this diameter constituting the diameter maximum of the drill rod.
- the drill pipe can take support at its ends on the wall of the borehole through parts 24a and 24b resistant to wear.
- rods drilling having profiled portions as described above and rods smooth drilling without such profiled parts.
- profiled elements according to the invention makes it possible decrease the torque of rotation of the drill string, improve the properties multidirectional sliding between the walls of the borehole and the train of rods, to reduce the axial forces and the risks of blockage, when raising the drill string, reduce the risk of sticking of the drill pipe by differential pressure inside the borehole and improve the mechanical behavior of the drill string (or any other equipment or drill string).
- Improvement of the mechanical behavior of the drill string drilling is due in particular to the improvement of slip properties and the geometric quality of the bearing surfaces between the drill string and the walls of the borehole.
- the amplitude of the modes of vibration of the drill pipe and limit the risk of jamming and slip (Stick and Slip) of the drill tool.
- Improving the conditions for dynamic implementation of the drilling improves the driving and adjustment of the trajectory of the borehole.
- a profile for activating the drilling fluid and cleaning the drilling hole not only allows to obtain the specific advantages of the known profile, that is to say the reduction of pressure losses in the annulus of the borehole, the cleaning of sedimentation areas of the borehole and evacuation debris but still benefits related to the combination of the profile known with the profiles according to the invention. These benefits are due in particular to the activation of the circulation of the drilling fluid upstream of the profiles according to the invention.
- Such profiles can be provided on various elements of the train drill rods such as connecting pieces, drill collars or any other element usually used in rotary drilling.
- the profiles according to the invention may have geometric characteristics different from those described, to perform functions different from those of a bearing hydrodynamic or device facilitating the extraction of equipment drilling.
- the profiled element according to the invention which allows a conversion of forces exerted in the direction longitudinal axis in forces or action of circumferential direction allows to obtain many functions, according to the realization specific ribs and grooves of the profiled elements.
- these grooves may have widths or depths decreasing or simultaneously widths and depths decreasing.
- the invention applies generally to any equipment of rotary drilling having a cylindrical overall shape, generally variable diameter, that is to say having an outer surface whose envelope is a cylinder whose axis is the axis of the rotary drilling.
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Drilling Tools (AREA)
- Table Equipment (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
Claims (16)
- Tige de forage d'un train de tiges de forage rotatif présentant une forme globale cylindrique, un axe (4) dirigé suivant l'axe de rotation du forage et des parties d'extrémité (2a, 2b) de raccordement respectives à une seconde et à une troisième tige de forage du train de tiges de forage, la tige comportant, entre ses deux extrémités de raccordement (2a, 2b), au moins un tronçon profilé (3) comportant, sur une partie au moins de sa longueur, des parties en saillies (14, 15, 20) et des parties en creux (13, 16, 19) sur sa surface externe, suivant des dispositions sensiblement en forme d'hélices ayant pour axe l'axe (4) de la tige de forage, le tronçon profilé (3) comportant une partie profilée variable (11, 12) présentant des parties en creux et des parties en saillies radiales (15, 16, 19, 20) dont une au moins des caractéristiques géométriques et dimensionnelles est variable axialement suivant la direction de l'axe (4) de la tige de forage (1), le tronçon profilé (3) comportant, en amont de la partie profilée variable (11, 12) dans le sens de circulation d'un fluide de forage dans un annulaire (8) entre la tige de forage en position de service dans un trou de forage (6) et la paroi du trou de forage (6), une partie profilée uniforme (10) comportant des parties en creux et des parties en saillies radiales (13, 14) dont les caractéristiques géométriques et dimensionnelles sont sensiblement uniformes axialement suivant la direction de l'axe (4) de la tige de forage (1),
caractérisée par le fait que les parties en creux (16, 19) de la partie profilée variable (11, 12) sont disposées dans le prolongement des parties en creux (13) de la partie profilée uniforme (10). - Tige de forage suivant la revendication 1, caractérisée par le fait que la partie profilée variable (11, 12) présente un diamètre supérieur au diamètre de la partie profilée uniforme (10).
- Tige de forage suivant la revendication 2, caractérisé par le fait que la partie profilée variable (11, 12) constitue une partie de la tige de forage (1) ayant un diamètre maximal.
- Tige de forage selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'une partie profilée variable (11) présente des parties en creux (16) dont la section est décroissante dans une direction (9) de circulation d'un fluide de forage dans un annulaire (8) entre la tige de forage en position de service dans un trou de forage (6) et la paroi du trou de forage (6).
- Tige de forage selon la revendication 4, caractérisée par le fait que les parties en creux (16) de la partie profilée variable (11) présentent une largeur et/ou une profondeur décroissante, dans la direction circonférentielle, dans le sens de circulation du fluide de forage.
- Tige de forage selon l'une quelconque des revendications 4 ou 5, caractérisée par le fait que les parties en creux (16) à section décroissante de la partie profilée variable (11) présentent, en considérant le sens de rotation (5) de la tige de forage, un bord d'attaque et un bord de fuite ayant des inclinaisons (β1, β2) différentes par rapport à un rayon de la section transversale de la tige de forage passant respectivement par l'extrémité du bord d'attaque et par l'extrémité du bord de fuite.
- Tige de forage selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'une partie profilée variable (12) présente des parties en saillies radiales (20) disposées suivant des hélices dont l'inclinaison par rapport à un plan transversal perpendiculaire à l'axe (4) de la tige de forage est croissante dans la direction axiale (4) de la tige de forage et dans le sens allant de bas en haut dans la position de forage de la tige de forage (1) à l'intérieur d'un trou de forage (6).
- Tige de forage selon la revendication 7, caractérisé en ce que les parties en saillies radiales (20) de la partie profilée variable (12) permettent de faciliter l'extraction de la tige de forage du trou de forage par glissement d'obstacles en saillie sur la paroi du trou de forage (6) à l'intérieur de parties en creux (19) délimitées par les parties en saillies radiales (20) et torsion de la tige 1 autour de son axe (4).
- Tige de forage selon l'une des revendications 7 ou 8 dépendante de la revendication 4, caractérisé en ce que la partie profilée variable (12) ayant des parties en saillies radiales (20) disposées suivant des hélices d'inclinaison variable est située en aval de la partie profilée variable (11) ayant des parties en creux (16) à section décroissante.
- Tige de forage selon la revendication 9, caractérisé en ce que les parties en creux (19) de la partie profilée variable (12) ayant des parties en saillies radiales (20) disposées suivant des hélices d'inclinaison variable sont dans le prolongement des parties en creux (13, 16) de la partie profilée variable (11) ayant des parties en creux (16) à section décroissante et de la partie profilée uniforme (10).
- Tige de forage selon l'une quelconque des revendications précédentes, caractérisée par le fait que les parties d'extrémité (2a, 2b) de la tige de forage comportent chacune une première partie (23a, 23b) à plus faible diamètre comportant des moyens de raccordement filetés (25) de la tige de forage (1) et dans le prolongement axial de la première partie à plus faible diamètre (23a, 23b), une seconde partie à plus grand diamètre (24a, 24b).
- Tige de forage selon la revendication 11, caractérisée par le fait que la seconde partie à plus grand diamètre (24a, 24b) de la partie d'extrémité de la tige de forage (1) présente des rainures disposées suivant des hélices ayant pour axe l'axe (4) de la tige de forage (1), dont la section transversale perpendiculaire à l'axe (4) de la tige de forage est décroissante dans le sens de circulation d'un fluide de forage, pendant l'utilisation de la tige de forage (1), à l'intérieur d'un trou de forage (6).
- Tige de forage selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'elle comporte, dans une disposition adjacente par rapport à sa partie d'extrémité intérieure de raccordement (26), dans la position d'utilisation à l'intérieur d'un trou de forage (6), une partie profilée comportant des nervures en saillie disposées suivant des hélices dont l'inclinaison par rapport à un plan transversal perpendiculaire à l'axe (4) de la tige de forage (1) est croissant dans la direction de l'axe (4) de la tige de forage et dans le sens allant de bas en haut dans la position d'utilisation de la tige de forage (1).
- Tige de forage selon l'une quelconque des revendications précédentes, caractérisée par le fait qu'elle comporte entre ses parties d'extrémité de raccordement (2a, 2b), une pluralité de tronçons profilés (3).
- Tige de forage selon la revendication 14, caractérisée par le fait qu'elle comporte trois tronçons profilés (3) entre les parties d'extrémité de raccordement (2a, 2b).
- Tige de forage selon l'une quelconque des revendications précédentes, caractérisée par le fait que les parties en creux et les parties en saillies radiales (13, 14) de la partie profilée uniforme (10) permettent l'activation de la circulation d'un fluide de forage dans un annulaire (8) entre la tige de forage en position de service dans un trou de forage (6) et la paroi du trou de forage (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9901391A FR2789438B1 (fr) | 1999-02-05 | 1999-02-05 | Element profile pour un equipement de forage rotatif et tige de forage comportant au moins un troncon profile |
FR9901391 | 1999-02-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1026364A1 EP1026364A1 (fr) | 2000-08-09 |
EP1026364B1 true EP1026364B1 (fr) | 2005-06-08 |
Family
ID=9541676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00400190A Expired - Lifetime EP1026364B1 (fr) | 1999-02-05 | 2000-01-25 | Elément profilé pour un équipement de forage rotatif et tige de forage comportant au moins un tronçon profilé |
Country Status (6)
Country | Link |
---|---|
US (1) | US6349779B1 (fr) |
EP (1) | EP1026364B1 (fr) |
AT (1) | ATE297497T1 (fr) |
DE (1) | DE60020618D1 (fr) |
FR (1) | FR2789438B1 (fr) |
NO (2) | NO322967B1 (fr) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2428557A1 (fr) * | 2000-12-19 | 2002-06-27 | Weatherford/Lamb, Inc. | Composant de tubage reducteur de couple |
FR2824104A1 (fr) | 2001-04-27 | 2002-10-31 | Smf Internat | Element profile pour un equipement de forage rotatif et applications a des composants d'un train de tiges de forage |
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CN102787812B (zh) * | 2012-08-20 | 2015-09-30 | 山东九商工程机械有限公司 | 一种整体式多棱钻杆 |
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FR2997439B1 (fr) * | 2012-10-30 | 2015-04-03 | Vam Drilling France | Dispositif stabilisateur pour garniture de fond de puits |
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EP3063363B1 (fr) * | 2013-10-25 | 2020-11-25 | National Oilwell Varco, L.P. | Raccords de nettoyage de trou pour fond de trou et leurs procédés d'utilisation |
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WO2016100497A1 (fr) | 2014-12-16 | 2016-06-23 | Sumrall Ernest Newton | Outils de conditionnement de trou de forage |
USD786645S1 (en) | 2015-11-03 | 2017-05-16 | Z Drilling Holdings, Inc. | Reamer |
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CN113374428B (zh) * | 2021-04-29 | 2023-06-20 | 河南理工大学 | 一种突出煤层圆周供流护孔卸压筛孔钻杆 |
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DE2920140C2 (de) * | 1979-05-18 | 1984-03-08 | Ruhrkohle Ag, 4300 Essen | Stabilisierungseinrichtung für Horizonttalbohrungen |
EP0178709B1 (fr) * | 1984-10-11 | 1988-11-30 | DIAMANT BOART Société Anonyme | Dispositif de stabilisation |
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US4874045A (en) * | 1988-12-27 | 1989-10-17 | Clayton Charles H | Straight hole drilling method and assembly |
US4984633A (en) * | 1989-10-20 | 1991-01-15 | Weatherford U.S., Inc. | Nozzle effect protectors, centralizers, and stabilizers and related methods |
DE4028261A1 (de) * | 1990-08-06 | 1992-02-13 | Fischer Artur Werke Gmbh | Bohrer zur herstellung von zylindrischen bohrloechern |
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GB2314358B (en) * | 1996-06-18 | 2000-10-11 | George Swietlik | Cutting bed impeller |
FR2760783B1 (fr) * | 1997-03-17 | 1999-07-30 | Smf Int | Element d'un train de tiges de forage rotatif |
-
1999
- 1999-02-05 FR FR9901391A patent/FR2789438B1/fr not_active Expired - Lifetime
-
2000
- 2000-01-25 DE DE60020618T patent/DE60020618D1/de not_active Expired - Lifetime
- 2000-01-25 AT AT00400190T patent/ATE297497T1/de not_active IP Right Cessation
- 2000-01-25 EP EP00400190A patent/EP1026364B1/fr not_active Expired - Lifetime
- 2000-02-03 US US09/497,197 patent/US6349779B1/en not_active Expired - Lifetime
- 2000-02-03 NO NO20000556A patent/NO322967B1/no not_active IP Right Cessation
-
2006
- 2006-09-07 NO NO20064023A patent/NO328794B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2789438B1 (fr) | 2001-05-04 |
NO20064023L (no) | 2000-08-07 |
US6349779B1 (en) | 2002-02-26 |
EP1026364A1 (fr) | 2000-08-09 |
ATE297497T1 (de) | 2005-06-15 |
DE60020618D1 (de) | 2005-07-14 |
FR2789438A1 (fr) | 2000-08-11 |
NO322967B1 (no) | 2006-12-18 |
NO328794B1 (no) | 2010-05-18 |
NO20000556D0 (no) | 2000-02-03 |
NO20000556L (no) | 2000-08-07 |
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