EP0293355B1 - Vorrichtung zur Verriegelungskontrolle eines Seilkernbohrgerätes - Google Patents

Vorrichtung zur Verriegelungskontrolle eines Seilkernbohrgerätes Download PDF

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Publication number
EP0293355B1
EP0293355B1 EP88870037A EP88870037A EP0293355B1 EP 0293355 B1 EP0293355 B1 EP 0293355B1 EP 88870037 A EP88870037 A EP 88870037A EP 88870037 A EP88870037 A EP 88870037A EP 0293355 B1 EP0293355 B1 EP 0293355B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
piston
integral
hydraulic pressure
finger
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
EP88870037A
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English (en)
French (fr)
Other versions
EP0293355A1 (de
Inventor
Charles Pierre Hallez
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.)
Diamant Boart NV SA
Original Assignee
Diamant Boart NV SA
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 Diamant Boart NV SA filed Critical Diamant Boart NV SA
Publication of EP0293355A1 publication Critical patent/EP0293355A1/de
Application granted granted Critical
Publication of EP0293355B1 publication Critical patent/EP0293355B1/de
Anticipated expiration legal-status Critical
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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
    • 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

  • the present invention relates to a device for controlling the locking of a cable sounder corer for a wet well, this corer comprising an outer tube in which slides an inner tube consisting of a hooking head and a cylindrical body optionally provided with a hydraulic seal with the outer tube and means for locking the inner tube relative to the outer tube.
  • Belgian device no. 900,733 discloses a device of the type described in the first paragraph of this specification.
  • a bistable retractable lock ensures the hydraulic sealing of the inner tube with the outer tube, when this lock is pushed to a lower position by hydraulic pressure by means of a pump for injecting the drilling liquid, c that is to say when said pressure of the drilling liquid exceeds a predetermined value.
  • the lock allows the circulation of the drilling liquid when the pressure is less than said value, but greater than the return force necessary for the opening of a valve for adjusting the flow rate of the drilling liquid.
  • This device although improved, has the disadvantage of being technically complex and easily jammed in the presence of drilling mud which prevents the bistable lock from performing a rotational movement around a vertical axis to occupy the positions lower and upper prescribed.
  • This device also does not make it possible to restore, by a simple operation, the device for controlling the locking of a drilling core barrel in its initial state.
  • the device according to the invention aims to remedy these drawbacks, while retaining the advantages of the known locking control device, that is to say a device which does not require checking from the evolution of the pressure d water to the injection pump, if the lockout has actually taken place.
  • the device according to the present invention of the type described in the first paragraph of this specification, is characterized in that it comprises a deflecting envelope, a sleeve and a piston movable relative to each other and relative to the core barrel, as well as a lock associated with the sleeve or the piston to secure them to one another when a hydraulic pressure greater than a predetermined value has brought the piston, against a spring in a lower position, the movements of the piston and of the sleeve with respect to the deflector casing being guided by a pin integral with the deflector casing and which slides in elongated holes made in the piston and the sleeve against the spring, towards the lower position which ensures sealing hydraulic of the inner tube with the outer tube, so that, when the hydraulic pressure is reduced to a value lower than the predetermined value, the manc hon, which has become integral with the piston, is brought into a higher position, such that it allows the circulation of the drilling liquid between the outer tube and the inner tube through the deflector casing.
  • the piston is subjected during drilling to a hydraulic pressure on the one hand and to a counterforce on the other hand, of predetermined value which opposes the displacement of the piston under the action of the hydraulic pressure, so that the piston can only be fixed to the sleeve when the hydraulic pressure applied to the piston is greater than this predetermined value and the lock for fixing the piston to the sleeve is constituted by at least one finger capable of redoing protruding into both the sleeve and the piston.
  • the piston has a head having a cavity in which the finger intended to secure the piston to the sleeve is at least partially inserted and is preferably subjected to the action of a force so as to ensure a permanent contact of this part with a surface of the sleeve when the piston not yet integral with the sleeve is brought into the lower position mentioned above by hydraulic pressure.
  • FIG. 1 shows a cable corer designated as a whole by the reference notation 1.
  • This corer 1 comprises a tube 2 provided at one end 3 with a sounding ring 4 and at the other end with a thread of assembly.
  • This core barrel 1 also comprises an inner tube 5 coaxial with the tube 2 and equipped at its end 6 adjacent to the ring 4, with a carrot extractor sleeve 7.
  • the inner tube 5 is brought into the coring position by letting it slide along the tube 2 in free fall if the hole is wet or using an inshot in a dry hole. In the latter case, the inshot itself serves as a locking control.
  • the inner tube 5 is suspended in the outer tube 1 by an annular flange 8 bearing on a ring or suspension stop 9 secured to the outer tube 2.
  • the core barrel is provided at its upstream part with a latch holder 10 and a latching head 11 which has a frustoconical hook 12.
  • the latching head 11 is introduced into a slide 14 of the latch holder 10 and is connected to the latter by a pin 15.
  • the slide 14 has a diametrical slot 16, as well as two diametrically opposite elongated openings 17.
  • the unlocking pin 15 can slide relative to the latch holder 10.
  • the unlocking slide 14 carries an unlocking pin 19.
  • the latch holder 10 houses a latch 20 consisting of two flat locking lugs 21, 22, housed in the slot 16, these lugs being biased by a spring 23 so as to allow them to pivot around a pivot 24 and to be moved apart their upstream ends 25, 26, from one another.
  • the lock holder 10 also has two unlocking recesses 27.
  • a pin 28 connects the latch holder 10 to the remaining part of the inner tube 5.
  • An annular gap 29 is provided between the outer tube 2 and the inner tube 5 to supply water to the lower zone of the core barrel to cool the tool, during coring and to evacuate drilling debris.
  • a locking control device Downstream of the pin 28 is placed a locking control device designated as a whole by the reference notation 30.
  • This device 30 comprises a sleeve 31 and a piston 32 movable relative to a cylindrical envelope 33.
  • An o-ring 18 seals the piston 32 relative to the sleeve 31.
  • the casing 33 has a bottom 34, when the piston 32 is pushed to a lower position, for example when the hydraulic pressure due to the height of the column of drilling fluid to which is added the pressure of the drilling fluid pumps at the surface is greater than the force exerted by a powerful spring 35 on this piston 32, any circulation of the fluid between the outer tube 2 and the inner tube 5 is impossible.
  • the spring 35 must be dimensioned so as to be able to carry the column of liquid which overhangs it.
  • the power required to overcome the thrust exerted by the water column on the sleeve 31 and the piston 32 is indeed enormous.
  • the locking device according to the invention has the non-negligible advantage of allowing the spring 35 to exert the maximum thrust required, when it is fully compressed.
  • the sleeve 31 is subjected to the action of a spring 38 bearing on a disc 39 integral with the cylindrical casing 33.
  • This spring 38 allows an annular edge 40 of the sleeve 31 to be applied to a seat 41 of the envelope 33, when the sleeve 31 is not secured to the piston 32, so as to prevent the circulation of the drilling liquid between the outer tube 2 and the inner tube 5.
  • the piston 32 When the hydraulic pressure applied to the piston 32 is sufficient to bring a cavity 42 of the piston in which is housed a ball 43 pushed back by a spring 44, opposite a hemispherical recess 45 of the sleeve 31, the ball 43 protrudes into this recess 45 so as to secure the sleeve 31 of the piston 32.
  • the piston 32 When the hydraulic pressure is then released, the piston 32 is pushed back at the same time as the sleeve 31, under the effect of the spring 35, towards a higher position so as to allow the circulation of the drilling liquid through the deflecting casing 33, between the outer tube 2 and the inner tube 5.
  • the casing 33 has at its ends holes 46 and 47 allowing the passage of the drilling liquid .
  • the drilling liquid can in fact pass through the holes 46 at the head of the casing 33 in the annular space 48 located between the sleeve 31 and the casing 33 and then through the holes 47 at the tail of the deflecting casing 33 in the gap 29 located between the outer tube and the inner tube 5.
  • the piston 32 is advantageously provided with a coaxial rod 49 serving to guide and center the spring 35, as well as to limit the displacement of the piston 32 when the latter is subjected to a pressure greater than that necessary to bring the cavity 42 into face of the recess 45.
  • a solid shaft 51 is screwed onto the deflector casing 33 at the bottom of the corer.
  • Tree 51 bears around it and top to bottom, a first retaining ring 52, support washers 53, expansion rings 54 therebetween, a first ball bearing 61, a spacer sleeve 56, a ball bearing 57, a spring 58 and a second retaining ring 59.
  • the spacer sleeve 56 has a threaded part on which is screwed a support 61 of inner tube 5.
  • the tapped lower part of the support 55 carries a tube 5 used to receive a carrot.
  • the ball 43 can be replaced by any other piece of any shape and is advantageously subjected to a slight pressure, due for example to the force of a spring 63 bearing on the bottom of the cavity 42, so as to ensure permanent contact between the ball 43 and the lateral surface of the sleeve 31 when the latter is not yet secured to the piston 32.
  • the recess 45 of the sleeve 31 communicates by a conduit 64 with the outer surface of the sleeve 31.
  • the locking control device operates as follows:
  • An inner tube core drill cable 1 is introduced into a drill string constituting the outer tube 2.
  • the descent of the inner tube of the core 1 can be accelerated by injecting drilling liquid into said drill string.
  • the deflector casing 33 When the piston 32 is in the lower position, the deflector casing 33 is completely closed and the flow of drilling liquid becomes zero.
  • the sleeve is tightly applied to its seat in the deflecting casing and the drilling liquid can neither pass from the outside of the casing nor from the inside of the deflecting casing.
  • the drilling fluid pressure increases until the surface mounted safety valves on the drilling fluid pumps come into action and begin to release the drilling fluid.
  • the piston is pushed down as long as the pressure of the drilling fluid exceeds a predetermined value.
  • the longitudinal groove abuts against the pin 36.
  • the cavity 42 is located opposite the recess 45 and the sleeve 31 is secured to the piston, thanks to the ball 42 which, by the action of the spring 63, projects into the recess 45.
  • the locking device 30 is insensitive to a possible further increase in pressure. If the pressure of the drilling fluid increases again, this pressure will act on the two opposite faces of the sleeve 31 as well as on the two opposite faces of the piston 32. The piston 32 and the sleeve 31 remain insensitive to any further increase in pressure .
  • the inner tube of the corer When the coring is finished, the inner tube of the corer is raised to the surface of the well and the core is withdrawn from the receptacle tube 5.
  • the spring 35 is relaxed while the spring 38 is compressed.
  • the action of the spring 38 on the sleeve 31 allows the latter to slide down relative to the piston 32 and return to its uncoupled upper starting position and the action of the spring 37 on the sleeve 31 allows the latter to be applied to the seat 41 of the deflector casing 33 so preventing the circulation of any drilling liquid between the outer tube 2 and the inner tube 5 when the latter is suspended in the outer tube 2.
  • the finger 43 is disposed under the pin 36, so as to allow a more compact construction.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Earth Drilling (AREA)

Claims (10)

1. Vorrichtung zur Steuerung der Verriegelung (30) eines Kernbohrgerätes für ein Seilbohren (1) bei feuchter Bohrung, wobei das Kernbohrgerät ein Aussenrohr (2) umfasst, in dem ein Innenrohr (5) gleitet, das durch einen Aufhängkopf und einen zylindrischen Körper gebildet wird, der gegebenenfalls mit einem Hydraulik-Dichtungsring zum Aussenrohr (2) ausgestattet ist und einer Verriegelungseinrichtung gegenüber dem Aussenrohr ( 2), dadurch gekennzeichnet , dass sie einen Ablenkmantel (33) umfasst, eine Buchse (31) und einen Kolben (32), die relativ zueinander beweglich sind, sowie einen Riegel (43), der der Buchse (31) oder dem Kolben (32) zugeordnet ist, um sie relativ zueinander fest zu verbinden, wenn ein Hydraulikdruck, der einen vorgegebenen Wert überschreitet, den Kolben (32) gegen die Kraft einer Feder (35) in die untere position gebracht hat, die Bewegungen des Kolbens (32) und der Buchse (31) gegenüber dem Ablenkmantel (33) durch einen Stift (36) geführt werden, der fest mit dem Ablenkmantel (33) verbunden ist, und der in Längslöchern (37) gleitet, die im Kolben (32) und der Buchse (31) angebracht sind, gegen die Kraft der Feder (35) zur erwähnten unteren Position, die die Hydraulik-Abdichtung des Innenrohres (5) mit dem Aussenrohr (2) gewährleistet, so dass, wenn der Hydraulikdruck auf einen Wert verringert wird, der kleiner als der vorgegebene Wert ist, die fest mit dem Kolben (32) verbundene Buchse (31) in eine solche obere Position gebracht wird, dass sie die Umwälzung einer Bohrflüssigkeit zwischen dem Aussenrohr (2) und dem Innenrohr (5) durch den Ablenkmantel (33) gestattet.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet , dass der Kolben (32) während der Bohrung einerseits einem Hydraulikdruck unterliegt und andererseits einer Gegenkraft vorgegebener Grösse, die sich der Bewegung des Kolbens unter der Einwirkung des Hydraulikdruckes widersetzt, so dass der Kolben (32) nurfest mit der Buchse (31) verbunden werden kann, wenn der auf den Kolben (32) einwirkende Hydraulikdruck grösser als der vorgegebene Druckwert ist.
3. Vorrichtung nach irgendeinem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass der Riegel, um den Kolben (32) fest mit der Buchse (31) zu verbinden, aus mindestens einem Finger (43) besteht, der gleichzeitig einen Vorsprung in einer Ausnehmung (45) der Buchse (31) und im Kolben (32) bildet.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet , dass der Kolben (32) einen Kopf hat, der einen Hohlraum (42) aufweist, in dem der Finger (43) zur festen Verbindung des Kolbens (32) mit der Buchse (31) mindestens teilweise eingeführt ist.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet , dass der Finger (43) zur festen Verbindung des Kolbens (32) mit der Buchse (31) der Einwirkung einer Kraft in solcher Weise unterliegt, um einen ständigen Kontakt des Fingers (43) mit einer Oberfläche der Buchse (31) zu gewährleisten, wenn der Kolben (32), der noch nicht mit der Buchse (31) fest verbunden ist, durch den Hydraulikdruck in die erwähnte untere Position gebracht wird.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet , dass der Finger (43) unter der Wirkung einer Feder (44) steht, die sich auf dem Boden des Hohlraumes (42) abstützt.
7. Vorrichtung nach Anspruch 3 bis 6, dadurch gekennzeichnet , dass die Ausnehmung (45) der Buchse (31) eine Halbkugelform hat.
8. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet , dass der Kopf des Kolbens (32) und die Buchse (31) mindestens ein Längsloch aufweisen, das den Durchtritt eines Stiftes (36) ermöglicht, der fest mit einem Ablenkmantel (33) verbunden ist, um den Kolben (32) und die Buchse (31) während ihrer Verschiebungen gegenüber dem Ablenkmantel (33) zu führen.
9. Vorrichtung nach irgendeinem der vorausgehenden Ansprüche, dadurch gekennzeichnet, dass eine Feder (38) ständig die Buchse (31) gegen ihre untere position belastet, in welcher sie sich auf einem ringförmigen Rand (40) der Buchse (31) abstützt.
10. Vorrichtung nach Anspruch 3 oder 8, dadurch gekennzeichnet , dass die Ausnehmung (45) der Buchse (31) über eine Leitung (64) mit der Aussenfläche der Buchse (31) in Verbindung steht, um die Entnahme des Fingers (43) aus der Ausnehmung (45) zu gestatten, um die Verbindung von Kolben (32) und Buchse (31) zu lösen.
EP88870037A 1987-05-13 1988-03-10 Vorrichtung zur Verriegelungskontrolle eines Seilkernbohrgerätes Expired - Lifetime EP0293355B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8700526A BE1000529A4 (fr) 1987-05-13 1987-05-13 Dispositif de controle du verrouillage d'un carottier de sondage.
BE8700526 1987-05-13

Publications (2)

Publication Number Publication Date
EP0293355A1 EP0293355A1 (de) 1988-11-30
EP0293355B1 true EP0293355B1 (de) 1992-07-08

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ID=3882659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88870037A Expired - Lifetime EP0293355B1 (de) 1987-05-13 1988-03-10 Vorrichtung zur Verriegelungskontrolle eines Seilkernbohrgerätes

Country Status (6)

Country Link
US (1) US4832138A (de)
EP (1) EP0293355B1 (de)
AU (1) AU595443B2 (de)
BE (1) BE1000529A4 (de)
DE (1) DE3872600T2 (de)
ZA (1) ZA882124B (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1000529A4 (fr) * 1987-05-13 1989-01-17 Diamant Boart Sa Dispositif de controle du verrouillage d'un carottier de sondage.
AU629609B2 (en) * 1989-02-22 1992-10-08 Longyear Tm Inc Wire line core drilling apparatus
US5267620A (en) * 1991-05-01 1993-12-07 Longyear Company Drilling latch apparatus
US6029758A (en) * 1997-11-24 2000-02-29 Boart Longyear International Holdings, Inc. Retractable core barrel valving apparatus
SE517258E (sv) 1999-08-24 2009-03-26 Atlas Copco Rocktech Ab Förfarande vid ventil, ventil, samt anordning för linkärnborrning innefattande dylik ventil
US9359847B2 (en) 2007-03-03 2016-06-07 Longyear Tm, Inc. High productivity core drilling system
EP2132395B1 (de) * 2007-03-03 2019-02-20 Longyear TM, Inc. Hochleistungskernbohrsystem
US7967085B2 (en) * 2008-04-22 2011-06-28 Longyear Tm, Inc. Braking devices for use in drilling operations
US9528337B2 (en) 2009-10-07 2016-12-27 Longyear Tm, Inc. Up-hole bushing and core barrel head assembly comprising same
US8794355B2 (en) * 2009-10-07 2014-08-05 Longyear Tm, Inc. Driven latch mechanism
US8869918B2 (en) 2009-10-07 2014-10-28 Longyear Tm, Inc. Core drilling tools with external fluid pathways
US9399898B2 (en) 2009-10-07 2016-07-26 Longyear Tm, Inc. Core drilling tools with retractably lockable driven latch mechanisms
US8485280B2 (en) * 2009-10-07 2013-07-16 Longyear Tm, Inc. Core drilling tools with retractably lockable driven latch mechanisms
CA2784195C (en) 2011-08-01 2014-08-05 Groupe Fordia Inc. Core barrel assembly including a valve
WO2013110160A1 (en) * 2012-01-27 2013-08-01 Atlas Copco Canada Inc. Core barrel valve assembly
WO2013110159A1 (en) * 2012-01-27 2013-08-01 Atlas Copco Canada Inc. Core barrel head assembly
CN105909202B (zh) * 2016-07-05 2018-06-19 中交第四航务工程勘察设计院有限公司 一种基于液压卡取岩心的取心钻具
CN106014314B (zh) * 2016-07-05 2018-11-20 中交第四航务工程勘察设计院有限公司 一种钻探用液压岩心卡取装置
CN108301802B (zh) * 2018-04-20 2024-01-19 河北省地矿局第七地质大队(河北省地质矿产勘查开发局雄安地质调查监测中心) 绳索取芯钻具总成
CN109057736B (zh) * 2018-08-13 2023-08-22 四川大学 岩芯存储筒
CN108916393B (zh) * 2018-08-13 2023-11-03 四川大学 自动触发的翻板结构
CN110863790B (zh) * 2019-11-06 2022-03-01 大庆油田有限责任公司 一种用于co2分注井的机械可调配注器专用调节复位头
CN112945545B (zh) * 2021-03-31 2023-12-29 四川大学 翻板阀磁力闭合性实验方法

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US2491682A (en) * 1945-03-12 1949-12-20 Muhlbach Alfred Latch mechanism
US3266835A (en) * 1963-12-18 1966-08-16 Boyles Bros Drilling Company L Core barrel latch and by-pass assembly
US3340939A (en) * 1965-08-27 1967-09-12 Longyear E J Co Core lifter apparatus
AU422789B2 (en) * 1967-12-06 1972-03-27 Improved core drill
FR2359273A1 (fr) * 1976-07-20 1978-02-17 Diamant Boart Sa Appareil carottier du type a cable
DE2817194C2 (de) * 1977-05-03 1984-05-03 Diamant Boart S.A., Bruxelles Kernbohrgerät
FR2432080A1 (fr) * 1978-07-27 1980-02-22 Elf Aquitaine Connecteur-deconnecteur hydraulique de tiges de pompage
SE425420B (sv) * 1980-10-10 1982-09-27 Craelius Ab Anordning for att vid kernborrning indikera ner kernroret er fylld
EP0052672B1 (de) * 1980-11-21 1985-03-20 DIAMANT BOART Société Anonyme Verfahren zum Herausziehen eines im Bohrloch auswechselbaren Bohrkernbehälters und ein hierfür vorgesehener Fangkopf
BE900733A (fr) * 1984-10-02 1985-02-01 Diamant Boart Sa Dispositif de controle du verrouillage d'un carottier double a cable.
BE1000529A4 (fr) * 1987-05-13 1989-01-17 Diamant Boart Sa Dispositif de controle du verrouillage d'un carottier de sondage.

Also Published As

Publication number Publication date
DE3872600T2 (de) 1992-12-03
AU1416188A (en) 1988-11-17
ZA882124B (en) 1989-01-25
BE1000529A4 (fr) 1989-01-17
DE3872600D1 (de) 1992-08-13
US4832138A (en) 1989-05-23
EP0293355A1 (de) 1988-11-30
AU595443B2 (en) 1990-03-29

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