EP0954673A2 - Dispositif con u pour diriger et piloter la partie la plus a l'avant d'une tige de sonde sur des sites de forage - Google Patents

Dispositif con u pour diriger et piloter la partie la plus a l'avant d'une tige de sonde sur des sites de forage

Info

Publication number
EP0954673A2
EP0954673A2 EP98901126A EP98901126A EP0954673A2 EP 0954673 A2 EP0954673 A2 EP 0954673A2 EP 98901126 A EP98901126 A EP 98901126A EP 98901126 A EP98901126 A EP 98901126A EP 0954673 A2 EP0954673 A2 EP 0954673A2
Authority
EP
European Patent Office
Prior art keywords
piston
sleeve
housing part
parts
groove
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.)
Withdrawn
Application number
EP98901126A
Other languages
German (de)
English (en)
Inventor
Johannes Wilhelmus Henricus Van Den Bergh
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.)
BERGH JOHANNES W H DEN
Original Assignee
BERGH JOHANNES W H DEN
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 BERGH JOHANNES W H DEN filed Critical BERGH JOHANNES W H DEN
Publication of EP0954673A2 publication Critical patent/EP0954673A2/fr
Withdrawn legal-status Critical Current

Links

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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/004—Indexing systems for guiding relative movement between telescoping parts of downhole tools
    • E21B23/006—"J-slot" systems, i.e. lug and slot indexing mechanisms
    • 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
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • 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
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/067—Deflecting the direction of boreholes with means for locking sections of a pipe or of a guide for a shaft in angular relation, e.g. adjustable bent sub

Definitions

  • Apparatus for directing and steering the foremost part of a drillpipe at drillings is provided.
  • the invention relates to an apparatus for directing and steering the foremost part of a drillpipe at drillings.
  • the drillstring is first retrieved from the vertical bore, whereafter a wedge shaped gui- ding piece is let down into the borehole, and subsequently the drillstring is again lowered into the borehole, where the wedge shaped guiding piece deviates the foremost part of the drillstring sidewards, so that the borehole is drilled in a more horzizontal direction, to form the required side track.
  • a bend piece is incorporated, which carries the bit and a drilling motor.
  • the bit when driven by the drilling motor and non-rotating drill string is drilling ahead sidewards forming the required side track.
  • This drilling motor comprises in short the following main features: a remote adjustable bend piece, an adjusting system, which system is made up of a piston which is surrounded by a housing part, which piston is build up of an enveloping part (or sleeve) provided with a strong spring and a coaxial piston part provided therein, which is provided with an inwardly directed collar and a soft spring, through which a shaft with local thickenings is passed, while the sleeve relative to the housing part and the coaxial part relative to the sleeve can move upwards and downwards under the influence of the mass flow and the springs, while the movements are limited by a ratchet and stop system and a locking mechanism made up of a closed groove and a plug mounted in a tangentially movable saddle.
  • the invention can be subdivided in:
  • the bend piece can be applied in the situation in which this is economically advan- tageous as a manual adjustable bend piece at the drilling site.
  • the bend piece is made up of two housing parts, which are rotatably connected to each other through an inner and an outer toothing and which are fixed into each other by means of a radial wedge which can be expanded by introducing from outside expansion elements.
  • the constructive execution is particularly also suitable as a non-flexible connection for housing parts or drillpipe parts which is very simple to mount and to dismantle, which is very economical as the present connections after several times of mounting and removal of parts usually have to be replaced.
  • the mass flow switch is made up of a groove with loops with internal smaller groove parts with stop- and upwards inclined ends, provided at the outer side of the coaxial piston part and in which a con- necting body inserts with an internal spring loaded pin, which, depending on the position of the connecting element in the groove, inserts up to into the smaller groove parts and which connecting element is supported in a movable saddle which forms part of the sleeve and which can rotate around the axial centre line thereof.
  • the closed groove with in- and out hook positions and provided with smaller groove parts with upwards inclined- and stop ends is accommodated in a cylindrical shaped body, which forms part of the sleeve and which can rotate relative to the axial centre line thereof, in which the connecting element with internal spring loaded pin is connected to the housing part and inserts up to within the groove, while the pin, depending on the position of the connecting element can insert in the groove up to within the smaller groove parts .
  • FIG. 1 shows a schematic view of an embodiment of a drill pipe, such as is connected to the end of a drill pipe 1.
  • a stabilizer 2 is provided at the drill pipe side in front of the motor of the drill.
  • the drill motor itself can be subdivided in the housing, in which the drive motor 3 is provided, the drive housing with a bend 4, between which the connecting shaft is located, which connects the shaft of the drive motor to the shaft of the bearing housing 5.
  • the bit 6 is located at the end of the bearing housing.
  • the stabilizer 7 at the bearing housing is present.
  • Fig. 2 shows a longitudinal section of an adjustable bend piece 4 according to the invention, by which: - very simple mounting and removal is made possible, - great forces and moments can be transmitted without play, - a swinging shaft can be passed internally through the bend piece, even in the case of a drill motor with a heavy and swinging and also inclined shaft, while a sufficiently large annular flow channel will remain present.
  • the house with bend is subdivided in two parts, that is: an upper part 8 that is provided with an inserting part 10 which inserts in the lower part 9, onto which an outer toothing 11 is provided, which fits within the inner toothing 12 provided in the upper part of the lower housing part 9, which are formed in such a way, that the housing parts can rotate without play relative to each other in planes through the centre lines of the housing parts 8 and 9.
  • the axial pressure forces are transmitted from the upper part 8 to the lower part 9 by a ring shaped shoulder 13 provided on the inserting part 10 of which the spherical shaped surface rests against the bowl shaped surface of a cylindrical ring 14, which is supported in the lower housing part 9 by means of a ring 15, which fits in a recess 26 of the housing part 9 , which or reasons of mounting is carried out in three part .
  • the axial pulling forces are transmitted from the lower housing part 9 to the inserting part 10 by a ring shaped wedge 16 against which a ring shaped element 17 rests, of which the spherical shaped surface rests against the bowl shaped surface of the shoulder 13.
  • the lower housing part 9 is at the upper end formed by a ring- and spherical shaped surface 19, which rests against a ring and bowl shaped surface 20 disposed on a cylindrical sealing ring 21-, which is provided around a contracted part 22 of the upper housing part 8.
  • the toothings and spherical- and bowl shaped surfaces all have a joint centre point of rotation 23. Where it is necessary sealing rings and equalization of pressure elements are provided.
  • Fig. 3 shows a cross section at the level of the radial wedge 16 which at the outer side is provided with shoulders 18 which fit into recesses 24 in the housing part 9.
  • This element 17 can also be formed as one whole, the shoulder 13 then has to be formed as a loose element and be fixed to the inserting part 10 by means of one or more auxiliary elements.
  • This embodiment of the bend piece is particularly suitable for the easy mounting and removing without the necessity of the use of an expensive break-out unit or other equipment.
  • the mounting is carried out in a very simple manner, by the mounting of the parts 15, 14 in the housing part 9, placing of the parts 21, 16 and 17 onto the inserting part 10 and the subsequent insertion of the inserting part 10 in housing part 9 and the afterwards insertion from outside of the expansion pins 25.
  • Removal is done in a very simple manner by removing the pins 25 from outside and the subsequent pulling out of each other of the housing parts 8 and 9.
  • the bend piece is carried out as a bend piece, which is adjustable at the surface of the drilling site, in the case this is economically advantageous.
  • the inserting part 10 is provided with a further inserting cylindrical shaped adjusting organ 31 which is supported in a ring shaped element 30 which at the outer side is provided with a spherical shaped surface which rests in a cylindrical shaped ring with internal bowl shaped surface 29, which serves as second adjusting organ 32 and which is supported in the housing part 9.
  • the centre lines of the adjusting organs 31 and 32 are orientated relative to each other such that at axial displacement or rotation of the adjusting organ 32 or adjustment of the toothings 11 and 12 relative to each other the angle between both housing parts 8 and 9 is changed.
  • the element 30 does not have to be applied.
  • the bend piece is carried out as a non-flexible connection of two housing parts or drill pipe parts, wherein the toothings 11 and 12 can be carried out as straight toothing and the spherical and bowl shaped surfaces can be left out and if desired it can also be carried out as straight connecting piece.
  • the bend piece is remote controlled under the influence of the mass flow.
  • the adjusting organ 32 to this end is connected to the sleeve 44 of the piston 43, 44 of the adjusting system, which will be explained further on.
  • the housing part 8 hinges relative to the other housing part 9 about the centre point of rotation 23.
  • a longitudinal section of an adjusting system according to the invention is shown, which is made up of the following main parts: - a shaft 39 with thickenings 40, 41 and 42, - a thrust body in the shape of a piston part 43 with a contraction 45 that surrounds the shaft 39, - an enveloping piston part or sleeve 44 that envelops the piston part 43, and to which the adjusting organ 32 is connected.
  • the piston part 43 is provided with a soft spring 46 working against the direction of flow, which is supported in the sleeve 44.
  • the sleeve is provided with a strong spring 47 working against the direction of flow which is supported in the lower part of the housing part 9.
  • NL-A-9001883 are provided on the outer surface of the sleeve 44 one or more closed loops 61 in- and out hook positions, provided with a connecting element, which is mounted in a two-sided spring loaded saddle, which can rotate around the axis of housing part 9 and which is axially supported in an additional sleeve or a groove provided in the inner side of housing part 9.
  • one or more grooves 61 are now provided onto a cylindrical shaped body 68, which forms part of the sleeve 44 and which can rotate relative to the axial centre line thereof and which can be carried out in one or more axial divided parts.
  • the connecting element 65 herein is carried out as a plug, which can be mounted in the housing part 9 and is carried out with a cylindrical end 66, which inserts up to into the groove 61.
  • the element 66 is provided with an internal spring loaded pin 67, which, depending on the position of the connecting element 65, 66 in the groove 61, can insert up to into the smaller groove parts 62.
  • This further embodiment has the advantage, that no additional sleeve around the piston is required which would limit the constructional space too much or that in the inner side of the housing part 9 a tangential groove with spring loaded saddle has to be provided, which is very difficult to make.
  • the piston part 43 is provided on the outer side with one or more grooves 54 with loops, with internal smaller groove parts 55 with stop- 56 and upwards inclined ends 57, as well as a connecting element 58 between the grooves of piston part 43 and sleeve 44, which functions as mass flow switch.
  • the connecting element 58 here is carried out as a cylindrical shaped plug, internally provided with a spring loaded pin 59.
  • the plug is mounted in gliding saddle 60, which forms part of the sleeve 44 and which is axially supported therein in a groove and which can rotate around the axis of sleeve 44.
  • the connecting element 58 extends up to into the groove 54 and the pin 59 up to into the smaller groove parts depending on the position of the connecting element 58 in the groove 54.
  • An axial groove 70 is provided in the outer side of the sleeve 44. Herein inserts a fixed pawl 69, fixed to housing part 9, for lifting the spring loaded ratchets 48.
  • Fig. 5 the operation of the adjusting system is explained, whereby for clarification purposes it is presumed that the mechanism operates a bend piece.
  • the manner of operation of the adjusting system lies in a co-operation between hydraulic-, spring forces, mass flow switch and the locking mechanism under the influence of the mass flow.
  • the position of the contraction 45 relative to the shaft 39 determines depending on the mass flow the magnitude of the downflow directed hydraulic forces exerted on the piston parts 43 and 44.
  • the counteracting forces are provided by the soft spring 46 and the strong spring 47.
  • the mass flow switch limits the movement of the piston part 43 relative to the sleeve 44. (See diagram I).
  • the locking system limits the movement of the sleeve 44 relative to the housing part 9. (See diagram II).
  • the combined movement determines the position of the contraction 45 relative to the shaft 39 and housing part 9. (See diagram III).
  • Fig. 5 the situation is shown in which the bend piece is in the straight and locked position.
  • the pumps are regularly switched on and switsched off in order to lengthen for instance the drill pipe periodically. This must not cause adjustment of the bend.
  • the connecting body 58 moves from Position 1 to Position 2 and back in the first loop of the groove 54 , whereby the smaller groove parts in co-operation with the upwards inclined 57 and stop end 56 and the pin 59 see to it that the connecting body 58 cannot leave the first loop and as drawn, against the hands of the clock, moves through the loop.
  • Position 1 is the stop end in the first loop for upflow movement of the contraction 45 of the piston part 43 relative to the sleeve, as this cannot further move upflow.
  • Position 2 functions as downflow stop. In order to be able to move further downflow the hydraulic force should, after abutment of the connecting element 59 in Position 2 via the connecting element, move the sleeve 44 downflow. This is not possible because the hydraulic force in Position 2 is smaller than the counteracting force of the strong spring 47, which would have to conquered for further downflow movement of the sleeve 44.
  • Position 4 the contraction 45 has arrived at the height of the second thickening 41.
  • the hydraulic force is greater than the counteracting force of the strong spring 47 by which the piston parts 43, 44 will jointly move downflow and at the same time adjusting work is conducted. In this case the bend will be adjusted.
  • the connecting element 65 moves from Position a to Position b.
  • Piston part 43 then is unlocked relative to the sleeve 44 and will under the influence of the hydraulic force compress the soft spring further until stop Position 5 is arrived at, where further downflow movement relative to sleeve 44 is blocked, because the hydraulic force there is smaller than the force of the strong spring 47.
  • the bend is then in the bent and locked position.
  • the connecting element 58 will displace to stop Position 6.
  • the connecting body 65, 66 there blocks the piston 43, 44 in downflow direction relative to the housing part 9.
  • the system can be carried out as multiple adjusting system by extension of the groove 54 with more loops and the groove 61 more in- and out hook positions.
  • a particular feature of the system is that the movement of the contraction 45 relative to the shaft with thickenings during the switching determines the nature of the course of the pressure difference.
  • a further improvement according to the invention is a radially gliding contraction ring 45 in the situation, in which the shaft swings or displaces radially.
  • the inner size may be chosen smaller than the enveloping of the shaft.
  • the inner size of the contraction may also in these kind of situations be further reduced, so that the generated hydraulic pressure differences and -forces can be adapted to values required for detection and adjustment. The longer the drilling hole the stron- ger the damping of the signal becomes.

Landscapes

  • 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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

Cette invention se rapporte à un dispositif conçu pour diriger et piloter la partie la plus à l'avant d'une tige de sonde sur des sites de forage. Ledit dispositif comporte d'une part, une pièce de connexion constituée d'un logement inférieur et d'un logement supérieur et munie d'une ouverture centrale pour le passage du fluide de forage et, d'autre part, d'un arbre menant de moteur, ou rotor de moteur, une des parties du logement étant équipée d'une pièce d'insertion qui est conçue pour être introduite dans l'autre partie du logement, et dont le pourtour externe est inférieur au pourtour interne de l'autre partie de logement conçue pour recevoir ladite pièce d'insertion, lesdites parties du logement étant pourvues d'organes qui permettent de les relier l'une à l'autre, de manière libérable.
EP98901126A 1997-01-22 1998-01-22 Dispositif con u pour diriger et piloter la partie la plus a l'avant d'une tige de sonde sur des sites de forage Withdrawn EP0954673A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1005055 1997-01-22
NL1005055 1997-01-22
PCT/NL1998/000045 WO1998031915A2 (fr) 1997-01-22 1998-01-22 Dispositif conçu pour diriger et piloter la partie la plus a l'avant d'une tige de sonde sur des sites de forage

Publications (1)

Publication Number Publication Date
EP0954673A2 true EP0954673A2 (fr) 1999-11-10

Family

ID=19764251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98901126A Withdrawn EP0954673A2 (fr) 1997-01-22 1998-01-22 Dispositif con u pour diriger et piloter la partie la plus a l'avant d'une tige de sonde sur des sites de forage

Country Status (5)

Country Link
EP (1) EP0954673A2 (fr)
AU (1) AU5681998A (fr)
CA (1) CA2278804A1 (fr)
NO (1) NO993566L (fr)
WO (1) WO1998031915A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2342935B (en) * 1998-10-12 2000-12-06 Pilot Drilling Control Ltd Indexing mechanism and apparatus incorporating the same
GB0618880D0 (en) * 2006-09-26 2006-11-01 Geolink Uk Ltd Direction adjustment tool for downhole drilling apparatus
GB201120448D0 (en) * 2011-11-28 2012-01-11 Oilsco Technologies Ltd Apparatus and method
GB2514170A (en) * 2013-05-16 2014-11-19 Oilsco Technologies Ltd Apparatus and method for controlling a downhole device
US10808461B2 (en) 2016-11-01 2020-10-20 The Charles Machine Works, Inc. Angular offset drilling tool

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2023428A (en) * 1934-07-06 1935-12-10 Frederick C Liebhardt Coupling
US3356389A (en) * 1965-08-06 1967-12-05 Otis Eng Co Locking devices for well tools
US4610465A (en) * 1983-10-19 1986-09-09 Varco International, Inc. Structure and use of remotely releasable pile connectors
CA2067802A1 (fr) 1989-11-23 1991-05-24 Johannes Wilhelmus Henricus Van Den Bergh Dispositif de direction pour partie avant de tige de forage
GB2246406B (en) * 1990-07-26 1994-04-20 Exploration & Prod Serv Cam systems
US5048621A (en) * 1990-08-10 1991-09-17 Masx Energy Services Group, Inc. Adjustable bent housing for controlled directional drilling
US5285850A (en) * 1991-10-11 1994-02-15 Halliburton Company Well completion system for oil and gas wells
CA2063161A1 (fr) * 1992-03-16 1993-09-17 Lennard Sihlis Carter cylindrique a inclinaison variable
US5311952A (en) * 1992-05-22 1994-05-17 Schlumberger Technology Corporation Apparatus and method for directional drilling with downhole motor on coiled tubing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9831915A2 *

Also Published As

Publication number Publication date
NO993566L (no) 1999-09-20
CA2278804A1 (fr) 1998-07-23
AU5681998A (en) 1998-08-07
NO993566D0 (no) 1999-07-21
WO1998031915A3 (fr) 1998-09-11
WO1998031915A2 (fr) 1998-07-23

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