EP0345112B1 - Verankerungsvorrichtung für ein Bohrlochgerät mit ausstellbaren Gelenkarmen - Google Patents

Verankerungsvorrichtung für ein Bohrlochgerät mit ausstellbaren Gelenkarmen Download PDF

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Publication number
EP0345112B1
EP0345112B1 EP89401349A EP89401349A EP0345112B1 EP 0345112 B1 EP0345112 B1 EP 0345112B1 EP 89401349 A EP89401349 A EP 89401349A EP 89401349 A EP89401349 A EP 89401349A EP 0345112 B1 EP0345112 B1 EP 0345112B1
Authority
EP
European Patent Office
Prior art keywords
pressure
plunger
rod
head
probe
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
Application number
EP89401349A
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English (en)
French (fr)
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EP0345112A1 (de
Inventor
Noel Etourmy
Jean Laurent
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.)
Ateliers Mecaniques De St Gaudens "amg"
IFP Energies Nouvelles IFPEN
Original Assignee
Ateliers Mecaniques De St Gaudens "amg"
IFP Energies Nouvelles IFPEN
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Application filed by Ateliers Mecaniques De St Gaudens "amg", IFP Energies Nouvelles IFPEN filed Critical Ateliers Mecaniques De St Gaudens "amg"
Publication of EP0345112A1 publication Critical patent/EP0345112A1/de
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Publication of EP0345112B1 publication Critical patent/EP0345112B1/de
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Expired - Lifetime legal-status Critical Current

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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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/04—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
    • E21B23/0411—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion specially adapted for anchoring tools or the like to the borehole wall or to well tube
    • 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
    • E21B23/04—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
    • E21B23/042—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion using a single piston or multiple mechanically interconnected pistons

Definitions

  • Patent FR.A.2.548.727 discloses a device for anchoring a probe in a well by spacing of movable anchoring arms which come to rest against the walls.
  • the probe is equipped, for example, with measuring equipment intended for the study of the geological formations encountered or for carrying out seismic prospecting operations. It is suspended from an electro-carrying cable comprising power supply lines for the measuring equipment and signal transmission lines.
  • the anchoring device described in the cited earlier patent comprises at least one spring, a rod driven in translation by the rebound of the spring, means for transforming the translational movement of the rod into a pivoting movement of at least one arm anchor and means for intermittently immobilizing the rod in the spring compression position.
  • the immobilization means comprise a lock adapted to come into engagement in a radial recess of the rod in the compression position of the spring and hydraulic means for moving the lock.
  • the hydraulic means may comprise a cavity formed in the body of the device, a head secured to the translation lock and adapted to slide in the cavity, and a hydraulic circuit for intermittently applying unequal pressures on the two opposite faces of the head. , one of the two pressures being equal to the pressure prevailing in the well at the chosen depth where the device is immobilized.
  • the application of the two unequal pressures is carried out for example by means of a solenoid valve.
  • the device being most often used at a depth of several hundred meters deep where the pressure is high, the force to which the lock is subjected due to the differential pressure applied to the piston, is considerable and allows a very safe release and very frank about the opening of the arm.
  • the present invention relates to a new embodiment of the device making it possible to avoid any untimely triggering of each anchoring arm.
  • the hydraulic means include, like the embodiment of the prior patent, a cavity formed in the body of the device, a head secured to the lock in translation and adapted to slide in the cavity, the section of the head being greater than that of the lock. , and a hydraulic circuit for applying variable pressure to the head of the lock.
  • It is characterized in that it comprises pressure applying means for applying to the lock permanently a pressure equal to that prevailing in the well and to the head integral with the lock an opposing pressure which can vary between a first pressure whose value is sufficient to move the lock to its position engagement in the radial recess of the rod, and a second value low enough for the lock to be pushed towards its release position.
  • the pressure application means comprise for example a pipe opening into the cavity on the side of the head opposite the bolt and switching means for selectively applying to the head the first pressure or the second pressure.
  • the pressure applying means comprise first and second chambers of different sections formed in the body of the probe, first and second pistons of different sections adapted respectively to the sections of the first and second chambers, the first piston of lower section being permanently exposed to pressure in the well, the second chamber where the second piston moves communicating with said pipe, which is intermittently connected to a volume where a pressure prevails lower than the pressure prevailing in the well by l 'through a solenoid valve.
  • the anchoring device shown in FIGS. 1 and 2 is associated with a tubular probe 1 comprising an upper part 2 and a lower part 3 made integral with one another by several bars 4.
  • the measuring equipment consisting of geophones for example, is contained in a compartment 5 of the lower part 3 of the probe and connected to a multi-function cable supporting the probe by electrical conductors (not shown) passing for example to the inside the bars 4.
  • One of the bars 4 has an axis 6 around which an anchor arm can pivot 7.
  • the second ends of the two operating arms 9, 11 can pivot relative to a common axis 12.
  • On this common axis can also pivot a first end of a third operating arm 13.
  • the anchoring device also comprises a rod 14 provided with a recess 15 at the bottom of which is fixed a hinge pin 16 for the second end of the third operating arm 13.
  • the rod can slide in a cylindrical guide housing 17 formed in the axis of the body 18 of the probe.
  • An axial channel 21 is formed in the upper part of the rod 14. It communicates with a radial bore 21A opening outside the body 18.
  • the upper part of the housing 17 is extended by a chamber 22 of upper section containing a hydraulic liquid.
  • a piston 23 consisting of two parts of different sections 51 and 52, is adapted to slide freely and sealingly in the chamber 22 and the upper part of the guide housing 17, under the action of the possible pressure difference between the pressure hydraulic fluid and that prevailing in the well, so as to cancel this pressure difference.
  • the device also comprises a latch 24 provided with a head 25 of larger section which can be moved inside a cylindrical cavity 26 formed radially in the body 18 of the probe, between a withdrawal position where the latch is fully retracted at the interior of said body and an advanced position where it projects into the interior of the guide housing 17.
  • a recess 27 (Fig. 2, 4) is formed radially in the rod 14 for the latch 24. It opens into the central channel 21 of the rod 14 and thus the pressure Pe prevailing in the well is permanently applied to the lock on the side of the rod 14.
  • the cavity 26 is closed externally by a plug 28.
  • the dimensions of the operating arms and the location of the hinge pins 8, 10, 12 and of the housing 27 are chosen so that, when the anchoring arm 7 is in the closed position along the body of the probe, the helical spring 19 is bandaged and the lock is engaged in the recess 27.
  • the pressure application means allowing the arm 7 to be unlocked are arranged in a housing 29 of the body, the details of which are shown in FIGS. 2 and 4. They firstly comprise an attached tubular part 30 of section adapted to that of the chamber 22 and fixed therein by screwing.
  • the part 30 has a cylindrical interior cavity 31 closed on the side of the piston 23 and open on the opposite side.
  • Chamber 22 is extended by another chamber 32 of larger section.
  • a solenoid valve 33 provided with a threaded end piece 33A which is screwed onto the tubular part 30 at its open end.
  • the solenoid valve 33 comprises a movable piston L of section adapted to that of the cavity 31.
  • a circular groove 34 is formed in the wall of the tubular part 30 around the piston L.
  • a first longitudinal pipe 35 connects the groove 34 and the chamber 22 between the free piston 23 and the closed end of the tubular part 30.
  • a second pipe 36 formed longitudinally in the wall of the body 18, the groove 34 communicates with the cavity 26 or moves the head 25 of the latch.
  • a second circular groove 37 is formed in the interior wall of the chamber 22 around the insert 30.
  • a first radial bore 38 in the wall of the insert 30 communicates the interior cavity 31 with the groove 37.
  • a second, 39 in the outer wall of the body, communicates the groove 37 with the outside of the probe. This second bore 39 is closed by a threaded plug 40.
  • Two other radial bores 41, 42 are also provided in the wall of the body.
  • Seals 45, 46, 47, 48, 49 are disposed respectively around the piston L, P, the insert 30, the piston 23, the rod 14 and the latch 24, to allow their leaktight sliding.
  • the solenoid valve 33 is connected by conductors 50 to a transmission line included in the electro-carrying cable (not shown). In the rest position, the piston L is in the extended position (Fig. 1, 2) and isolates the interior of the cavity 31 from the groove 34.
  • the different sections S1 to S4 are chosen so that the force Fr is centripetal and has the effect of driving the lock into the recess 27 (Fig. 2, 4) of the rod in the closed position of the anchoring arm.
  • the device works as follows:
  • Oil is injected into the chamber 22 through the pipe 41 in sufficient quantity to fill the pipes 35, 36, the groove 34 and the cavity 26, and purge them of air.
  • the resulting force Fr exerted on the latch 24 (see relation 1) is sufficient to push the latter against the rod 14.
  • the anchoring arm 7 When the anchoring arm 7 is brought into the closed position against the wall of the body (Fig. 1 ) by compressing the helical spring 19, it causes the withdrawal of the rod 14 inside its guide housing 17 to its cocking position where the latch 24 is inserted into the recess. The anchor arm is locked.
  • a relatively high hydraulic pressure can be injected into the chamber 22 and the cavity 26 at least momentarily.
  • the probe is then lowered into the well. As it descends, the external pressure increases.
  • the recoil of the free piston 23 inside the chamber 22 under the action of this pressure which is applied to it by the axial channel 21, makes it possible to equalize with each instant the pressure of the hydraulic liquid contained in the chamber 22 with that prevailing in the well.
  • the solenoid valve 33 When the probe has reached the chosen depth where it must be anchored, the solenoid valve 33 is actuated so that the piston L, P moves back (Fig. 2, 4) and puts the lines 35, 36 into communication with the inner cavity 31 at very low pressure p.
  • the lock is subjected on the side of the axial channel 21 to a force equal to Pe.S3 and on the opposite side to a force equal to p.S4 the result is a centrifugal force sufficient to overcome the friction forces of the lock 24 in its recess 27 of the rod 14 and drive it towards its withdrawal position (Fig. 2, 4).
  • the rod 14 is released and, under the action of the helical spring 19, is pushed outwards from its guide housing 17.
  • the pivoting of the operating arms 9, 11, 13 resulting from this movement has the effect of rotate the anchoring arm 7 and, when it comes to bear on the wall, press the probe 1 against the opposite wall of the well.
  • the apparatus contained in the probe can then be used.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Actuator (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Measuring Fluid Pressure (AREA)
  • Piles And Underground Anchors (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Claims (4)

1. Verbesserte Verankerungsvorrichtung einer Sonde in einem Bohrloch durch Ausstellen wenigstens eines Verankerungsarms (7), der bezüglich des Sondenkörpers (18) verschwenken kann, mit wenigstens einer Feder (19), einer translatorisch durch Entspannen der Feder angetriebenen Stange (14), Mitteln zur Umformung der Translationsbewegung der Stange in eine Schwenkbewegung des Verankerungsarms und Mitteln zur intermitierenden Unbeweglichmachung der Stange in Kompressionsstellung der Feder, wobei diese eine Schraube (24) umfassen, die so ausgelegt ist, daß sie in eine Radialausnehmung (27) der Stange in Kompressionsstellung der Feder eingreift und hydraulischen Mitteln zum Bewegen der Schraube in eine löse Stellung, wo die Stange freigegeben wird, wobei diese Mittel eine im Körper (18) der Sonde vorgesehene Ausnehmung (26) umfassen, eine mit der Schraube translatorisch festen Kopf (25) der Schraube (24), derartiger Auslegung, daß er in diese Ausnehmung (26) gleiten kann, wobei der Querschnitt des Kopfes größer als der der Schraube ist und mit einem hydraulischen Kreis, um einen variablen Druck an den Schraubenkopf zu legen, dadurch gekennzeichnet, daß sie Mittel zur Aufbringung des Drucks umfaßt, um auf die Schraube (24) permanent einen Druck gleich dem im Bohrloch herrschenden und auf den mit der Schraube festen Kopf (25) einen Gegendruck aufzubringen, der variieren kann zwischen einem ersten Druck, dessen Wert ausreichend ist, um die Schraube in ihre Eingriffsstellung in der radialen Ausnehmung (27) der Stange zu bewegen und einem zweiten ziemlich schwachen Wert, damit die Schraube gegen ihre löse Stellung geschoben wird.
2. Verankerungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der hydraulische Kreis einen Kanal (35, 36) aufweist, der in den Hohlraum (26) auf der der Schraube (24) gegenüberliegenden Kopfseite mündet und Schaltmittel (33) umfaßt, um selektiv an den Kopf den ersten Druck oder den zweiten Druck zu legen.
3. Verankerungsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Mittel zur Druckaufbringung eine erste und eine zweite Kammer (17, 22) unterschiedlicher im Sondenkörper untergebrachter Querschnitte aufweist, einen Kolben (23) mit zwei Teilen unterschiedlicher Querschnitte, die jeweils an die Querschnitte der ersten und zweiten Kammern angepaßt sind, wobei der Teil des Kolbens (23) geringeren Querschnitts dauernd dem Druck im Bohrloch ausgesetzt ist, wobei die zweite Kammer (22), wo sich der Teil größeren Kolbenquerschnitts (23) bewegt, in Verbindung mit diesem Kanal (35, 36) steht, der mit einem Volumen (31), wo ein Druck kleiner als der im Bohrloch herrschende Druck herrscht, vermittels eines Magnetventils (33) verbunden ist und wobei die Mittel zur Druckaufbringung im übrigen Öffnungen (21, 21a, 27) umfassen, um an die Mutter den Außendruck zu legen.
4. Verankerungsvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Mittel zur Druckaufbringung ein angesetztes Bauteil (30), das mit einem Innenhohlraum (31) versehen ist, umfassen, wobei ein Kolben (L.P) dem Magnetventil (33) zugeordnet ist und beweglich ist zwischen einer Schließstellung des Innenhohlraums und einer Stellung, wo dieser Innenhohlraum in Verbindung mit dieser zweiten Kammer (22) und mit diesem Hohlraum (26), worin sich der Schraubenkopf (26) verschiebt, gesetzt ist.
EP89401349A 1988-05-30 1989-05-16 Verankerungsvorrichtung für ein Bohrlochgerät mit ausstellbaren Gelenkarmen Expired - Lifetime EP0345112B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8807275A FR2632010B1 (fr) 1988-05-30 1988-05-30 Dispositif d'ancrage d'une sonde dans un puits par ecartement de bras d'ancrage mobiles
FR8807275 1988-05-30

Publications (2)

Publication Number Publication Date
EP0345112A1 EP0345112A1 (de) 1989-12-06
EP0345112B1 true EP0345112B1 (de) 1992-02-05

Family

ID=9366813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401349A Expired - Lifetime EP0345112B1 (de) 1988-05-30 1989-05-16 Verankerungsvorrichtung für ein Bohrlochgerät mit ausstellbaren Gelenkarmen

Country Status (8)

Country Link
US (1) US4957162A (de)
EP (1) EP0345112B1 (de)
JP (1) JPH02112588A (de)
CN (1) CN1025447C (de)
CA (1) CA1310263C (de)
DE (1) DE68900810D1 (de)
FR (1) FR2632010B1 (de)
NO (1) NO172198C (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787504B1 (fr) 1998-12-18 2001-01-12 Inst Francais Du Petrole Systeme d'installation permanente des sondes de mesure contre la paroi interieure d'un conduit
US6935423B2 (en) * 2000-05-02 2005-08-30 Halliburton Energy Services, Inc. Borehole retention device
GB0102021D0 (en) * 2001-01-26 2001-03-14 E2 Tech Ltd Apparatus
US8171990B2 (en) * 2007-11-27 2012-05-08 Baker Hughes Incorporated In-situ formation strength testing with coring
US7757767B2 (en) * 2008-03-06 2010-07-20 Baker Hughes Incorporated Through tubing gun lock
JP4924732B2 (ja) * 2009-07-06 2012-04-25 日産自動車株式会社 スペアタイヤ設置構造
US9556694B2 (en) * 2014-07-11 2017-01-31 Sercel Apparatus and method for a motorless seismic tool
US9784058B2 (en) 2014-10-15 2017-10-10 Sercel Anchoring mechanism and method for down-hole tool
CN108679031A (zh) * 2018-05-18 2018-10-19 东莞海特帕沃液压科技有限公司 一种液压空压机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177938A (en) * 1958-10-23 1965-04-13 Schlumberger Well Surv Corp Methods and apparatus for operating borehole equipment
US3052297A (en) * 1959-02-25 1962-09-04 Halliburton Co Well tool
US3294171A (en) * 1964-02-10 1966-12-27 Otis Eng Co Hydraulic operated well tools
US3565170A (en) * 1969-12-12 1971-02-23 Schlumberger Technology Corp Control apparatus for well tools
FR2501380A1 (fr) * 1981-03-09 1982-09-10 Inst Francais Du Petrole Dispositif d'ancrage d'un instrument dans une cavite, muni de bras escamotables
FR2548727B1 (fr) * 1983-07-06 1985-11-29 Inst Francais Du Petrole Dispositif d'ancrage d'une sonde dans un puits, par ouverture de bras mobiles
US4715469A (en) * 1985-08-29 1987-12-29 Petrophysical Services, Inc. Borehole seismic receiver

Also Published As

Publication number Publication date
DE68900810D1 (de) 1992-03-19
NO172198C (no) 1993-06-16
CN1025447C (zh) 1994-07-13
JPH02112588A (ja) 1990-04-25
NO892134D0 (no) 1989-05-26
EP0345112A1 (de) 1989-12-06
NO892134L (no) 1989-12-01
NO172198B (no) 1993-03-08
US4957162A (en) 1990-09-18
FR2632010A1 (fr) 1989-12-01
CN1038141A (zh) 1989-12-20
CA1310263C (fr) 1992-11-17
FR2632010B1 (fr) 1990-09-14

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