EP0276724B1 - Outil carottier à entraînement direct - Google Patents

Outil carottier à entraînement direct Download PDF

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Publication number
EP0276724B1
EP0276724B1 EP88100667A EP88100667A EP0276724B1 EP 0276724 B1 EP0276724 B1 EP 0276724B1 EP 88100667 A EP88100667 A EP 88100667A EP 88100667 A EP88100667 A EP 88100667A EP 0276724 B1 EP0276724 B1 EP 0276724B1
Authority
EP
European Patent Office
Prior art keywords
core drilling
motor
outer tube
axial feed
feed force
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
EP88100667A
Other languages
German (de)
English (en)
Other versions
EP0276724A2 (fr
EP0276724A3 (en
Inventor
Johann Biehl
Alfred Ostertag
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.)
Baker Hughes Oilfield Operations LLC
Original Assignee
Eastman Teleco Co
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 Eastman Teleco Co filed Critical Eastman Teleco Co
Publication of EP0276724A2 publication Critical patent/EP0276724A2/fr
Publication of EP0276724A3 publication Critical patent/EP0276724A3/de
Application granted granted Critical
Publication of EP0276724B1 publication Critical patent/EP0276724B1/fr
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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/02—Fluid rotary type drives
    • 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
    • E21B25/04—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 the core receiver having a core forming cutting edge or element, e.g. punch type core barrels
    • 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
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/005—Below-ground automatic control systems

Definitions

  • the invention relates to a directly driven core drilling tool according to the preamble of claim 1.
  • Such tools can be used for core drilling work of all common deep drilling rigs.
  • the entire drill string does not have to be removed to remove the core.
  • a core drilling tool of the type mentioned which allows the core drilling device to be pulled with the outer tube remaining in the borehole, and in which the core drilling device is axially displaceable in the outer tube during coreing.
  • the motor of this tool remains in the core
  • the outer tube is axially secured and is rotatably coupled to the displaceable core drilling device via displaceable coupling members.
  • the core drilling device provides the rinsing liquid with reaction surfaces which, as a result of the drilling fluid pressure above it, in conjunction with the expansion of the surfaces, impart an axial feed force to it.
  • the drilling fluid pressure above the core drilling device is brought about by the throttling action of the annular spaces and gaps of the core drilling device on the drilling fluid flowing through.
  • a first flow-through space is formed between a core tube and an inner tube carrying a drill bit.
  • a second flow-through space is located between the inner tube mentioned and a jacket tube surrounding it. While the throttling effect of the first room remains constant, the throttling effect of the second room decreases with increasing exposure of the core drilling device from the casing tube.
  • the drilling fluid pressure and thus the axial feed force are proportional to the sum of the throttling effects of both rooms.
  • the maximum value of the axial feed force is relatively low and the force cannot be influenced in its size.
  • the object on which the invention is based is to improve a directly driven core drilling tool in such a way that a sufficiently large axial feed force, which is essentially independent of the exposure of the core drilling device and can be selected in terms of its size, can be impressed on the core drilling device.
  • the considerably higher drilling fluid pressure present above the motor can also be used for the hydraulic generation of an axial feed force. Since this pressure is independent of the exposure of the core drilling device, the exposure-dependent influences on the total drilling fluid pressure above the unit are reduced.
  • the axial feed force it can also be adjusted to other working conditions, e.g. a different mud weight or a different drill bit can be adjusted. The invention thus enables the tool to be used universally without inadvertently overloading the motor and consequently achieves optimum drilling progress.
  • the core drilling tool shown in Fig. 1 has an outer tube 1 which can be connected to a drill string, not shown. At the lower end, a roller core bit 2 is attached, which is used for drilling out an annular space and repositioning the outer tube 1 when the exposure area of the core tube is exhausted.
  • a unit 3 comprising a motor 4 and a core drilling device 5 is located within the outer tube 1. This unit 3 is axially displaceable. While the motor 4 is secured against rotating, the core drilling device 5 is rotatably arranged.
  • the core drilling device 5 itself consists of a core tube 7 carrying a drill bit 6 and an inner tube 8 rotatably supported therein.
  • a drilling fluid distributor 9 is arranged between the motor 4 and the core drilling device 5 and divides the drilling fluid emerging from the motor 4 into a first stream, which flows between the outer tube 1 and the core tube 7 and in a further stream between the core tube 7 and the inner tube 8.
  • the stream flowing between the outer tube 1 and the core tube 7 is controlled by a spring-loaded valve 10 so that it despite decreasing throttling effect of the flow path due to increasing exposure of the core drilling device 5 remains the same.
  • the motor 4 is provided with a collar 11 which fills the annular space between its housing and the outer tube 1.
  • the collar 11 is sealed with respect to the outer tube 1 and, with other housing areas of the motor 4, forms partial areas which fill the cross-sectional area of an inner passage area 12 of the outer tube 1. These partial areas result in the reaction areas of the drilling fluid pressure present above the unit 3 and generate the hydraulic axial feed force for the unit 3.
  • a catching device 13 is formed, which serves to pull up the entire unit 3 after drilling a core.
  • the catching device 13 is used to adjust the resulting axial feed force by exerting a retaining force on the core drilling device 5, which is fed to it via a cable 14 leading through the drill string by means of a winch located on the drilling tower.
  • values between a maximum value and zero can be set for the resulting axial feed force. The maximum value results when the axial feed force is determined in full by the drilling fluid pressure present above the unit 3 in connection with the reaction surfaces.
  • the pressurized reaction surfaces are designed as a cross-sectional surface of a flushing mandrel 15 connected to the motor.
  • the mandrel provided for the catching device 13 is used for this purpose, but it is hollow on the inside and has inlet openings 16.
  • the means for adjusting the hydraulically generated axial feed force comprise a sleeve 17 which is supported and sealed in the outer tube 1, has an opening 18 and is penetrated by the flushing pin 15.
  • the flushing pin 15 is sealed against the sleeve 17.
  • the setting of the hydraulically generated axial feed force is carried out by selecting and preassembling a sleeve 17 with a specific cross section of the opening 18 and a matching mandrel 15 before the unit 3 is let into the outer tube 1.
  • the flushing mandrel 15 carries a piston 19 which has the cross-sectional area of a further passage area 20 and contains nozzles 21.
  • the inlet openings 22 of the flushing mandrel 15 are located below the piston 19 in the form of radial slots.
  • the piston 19 creates an additional portion of the axial feed force by making use of the differential pressure applied across the nozzles 21. This differential pressure acts on the cross-sectional area of the inner passage area 20 of the outer tube 1 occupied by the piston 19 minus the nozzle cross section.
  • the additional portion of the axial feed force can be adjusted by the selection of the nozzles 21 and the volume flow of the drilling fluid.
  • the advantage of this embodiment is that a set of nozzles of different sizes 21 is less complex than such a differently sized flushing mandrel 15 and sleeves 17, as required by the embodiment of FIG. 2, and the time required for replacement is less.
  • FIG. 4 finally shows a third modification of the invention, in which a valve 23 is provided for setting the hydraulically generated axial feed force, which valve 23 is controlled by the return torque of the motor 4.
  • This valve 23 consists in detail of a fixed valve seat 24 and a valve body 26 which is coupled to the motor housing and can be pivoted to a limited extent against a torque spring 25.
  • the reaction surfaces for the axial feed force are again the same partial surfaces as those mentioned in the embodiment according to FIG. 1.
  • the drilling fluid pressure can then no longer propagate to the full extent or not at all in the region of the collar 11 and is only present on partial areas of the motor housing that are small in cross section. This causes a decrease the axial feed force.
  • In stationary operation there will be an angular position between the valve body 26 and the valve seat 24, in which the torque of the drill bit 6 and the associated axial feed force assume an equilibrium state.
  • the third modification of the invention thus offers an independent setting possibility even within a large volume flow and pressure range of the drilling fluid.

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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (5)

  1. Outil carottier à entraînement direct, comprenant un tube extérieur (1) pouvant être raccordé à un train de forage, un dispositif de carottage (5) placé de façon à être mobile en rotation et en direction axiale dans le tube extérieur (1) et comprenant lui-même un tube carottier (7) portant une couronne de forage (6) et un tube intérieur (8) monté à rotation dans le tube carottier, un moteur (4) entraîné par la boue de forage, accouplé au dispositif de carottage (5) et bloqué contre toute rotation par entraînement dans le tube extérieur (1), des surfaces de réaction pouvant être soumises à pression pour engendrer hydrauliquement une force d'avance axiale agissant en direction du fond sur le dispositif de carottage (5), ainsi qu'un dispositif de repêchage (13) pour la remontée du moteur (4) et du dispositif de carottage (5), caractérisé en ce que le moteur (4) est raccordé au dispositif de carottage (5) par un élément définissant une distance fixe dans le but de former une unité (3) mobile dans son ensemble et que, pour le réglage de la force d'avance axiale obtenue, est prévu le dispositif de repêchage (13), par l'intermédiaire duquel une force de retenue peut être exercée à l'aide d'un câble (14) traversant le train de forage et d'un treuil situé sur la tour de forage.
  2. Outil carottier à entraînement direct selon la revendication 1, caractérisé en ce que les surfaces de réaction pouvant être soumises à pression sont conçues comme des surfaces partielles du moteur (4), qui remplissent l'aire de section transversale d'une zone de passage interne (12) du tube extérieur (1).
  3. Outil carottier à entraînement direct selon la revendication 1, caractérisé en ce que les surfaces de réaction pouvant être soumises à pression sont conçues comme une aire de section transversale d'un mandrin à boue (15) fixé au moteur (4), qu'une douille (17) montée et adaptée de manière étanche dans le tube extérieur (1) et présentant une ouverture (18), est prévue pour le réglage de la force d'avance axiale engendrée hydrauliquement, l'ouverture (18) étant traversée par le mandrin à boue (15) d'une manière étanche et que l'aire de section transversale commune de l'ouverture (18) et du mandrin à boue (15) est dimensionnée sur la base de la pression de boue de forage agissant à travers l'unité (3) en fonction de la force d'avance axiale souhaitée.
  4. Outil carottier à entraînement direct selon la revendication 3, caractérisé en ce que les moyens de réglage de la force d'avance axiale générée hydrauliquement comprennent en plus un piston (19) disposé sur le mandrin à boue (15) et remplissant une autre zone de passage interne (20) du tube extérieur (1) ainsi que des ajutages (21) disposés dans le piston (19).
  5. Outil carottier à entraînement direct selon la revendication 1, caractérisé en ce que les surfaces de réaction pouvant être soumises à pression sont conçues comme des surfaces partielles du moteur (4), qui remplissent les aires de sections transversales de la zone de passage interne (12) du tube extérieur (1), et que, pour le réglage de la force d'avance axiale générée hydrauliquement, un clapet (23) commandé par le couple de réaction du moteur (4) est prévu, grâce auquel le débit de la boue de forage vers les surfaces partielles du moteur (4) constituant les surfaces de réaction peut être étranglé en fonction du couple de réaction.
EP88100667A 1987-01-23 1988-01-19 Outil carottier à entraînement direct Expired - Lifetime EP0276724B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3701914A DE3701914C1 (de) 1987-01-23 1987-01-23 Direktangetriebenes Kernbohrwerkzeug
DE3701914 1987-01-23

Publications (3)

Publication Number Publication Date
EP0276724A2 EP0276724A2 (fr) 1988-08-03
EP0276724A3 EP0276724A3 (en) 1990-08-22
EP0276724B1 true EP0276724B1 (fr) 1994-09-21

Family

ID=6319376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100667A Expired - Lifetime EP0276724B1 (fr) 1987-01-23 1988-01-19 Outil carottier à entraînement direct

Country Status (4)

Country Link
US (1) US4875531A (fr)
EP (1) EP0276724B1 (fr)
CA (1) CA1296319C (fr)
DE (1) DE3701914C1 (fr)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902870A1 (de) * 1988-07-25 1990-02-01 Eastman Christensen Co Verfahren zum abteufen von bohrungen in unterirdische gesteinsformationen
DE3825225A1 (de) * 1988-07-25 1990-02-01 Eastman Christensen Co Bohrwerkzeug
DE3902869C1 (fr) * 1989-02-01 1990-04-12 Eastman Christensen Co., Salt Lake City, Utah, Us
DE3912067C1 (fr) * 1989-04-13 1990-09-06 Eastman Christensen Co., Salt Lake City, Utah, Us
US5007490A (en) * 1990-06-20 1991-04-16 Ide Russell D Progressive cavity drive train with elastomeric joint assembly for use in downhole drilling
US5135059A (en) * 1990-11-19 1992-08-04 Teleco Oilfield Services, Inc. Borehole drilling motor with flexible shaft coupling
FR2675197B1 (fr) * 1991-04-12 1993-07-16 Leroy Andre Appareil de forage petrolier, gazier ou geothermique.
US5186265A (en) * 1991-08-22 1993-02-16 Atlantic Richfield Company Retrievable bit and eccentric reamer assembly
US5168942A (en) * 1991-10-21 1992-12-08 Atlantic Richfield Company Resistivity measurement system for drilling with casing
US6095259A (en) * 1998-04-03 2000-08-01 Keyes; Robert C. Core sampler apparatus with specific attachment means
BE1012557A3 (fr) 1999-03-15 2000-12-05 Security Dbs Carottier.
US7497279B2 (en) * 2005-11-21 2009-03-03 Hall David R Jack element adapted to rotate independent of a drill bit
US8360174B2 (en) 2006-03-23 2013-01-29 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US8297378B2 (en) 2005-11-21 2012-10-30 Schlumberger Technology Corporation Turbine driven hammer that oscillates at a constant frequency
US7753144B2 (en) 2005-11-21 2010-07-13 Schlumberger Technology Corporation Drill bit with a retained jack element
US8225883B2 (en) 2005-11-21 2012-07-24 Schlumberger Technology Corporation Downhole percussive tool with alternating pressure differentials
US8522897B2 (en) 2005-11-21 2013-09-03 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US7571780B2 (en) 2006-03-24 2009-08-11 Hall David R Jack element for a drill bit
US7954401B2 (en) 2006-10-27 2011-06-07 Schlumberger Technology Corporation Method of assembling a drill bit with a jack element
MX338284B (es) * 2006-12-15 2016-04-11 Schlumberger Technology Corp Sistema para direccionamiento de una sarta de perforacion.
US7721826B2 (en) 2007-09-06 2010-05-25 Schlumberger Technology Corporation Downhole jack assembly sensor
US8701799B2 (en) 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
SI22761A (sl) * 2009-07-22 2009-10-31 Kmetijski inštitut Slovenije Naprava za jemanje strukturno neporušenih vzorcev tal
US8499856B2 (en) * 2010-07-19 2013-08-06 Baker Hughes Incorporated Small core generation and analysis at-bit as LWD tool
CN102619484B (zh) * 2012-04-11 2014-09-10 中国石油集团川庆钻探工程有限公司钻采工程技术研究院 随钻井壁取心工具
CN103015932B (zh) * 2012-12-27 2015-08-19 中国石油集团川庆钻探工程有限公司 随钻取心的钻进系统
CN103015931B (zh) * 2012-12-27 2015-08-19 中国石油集团川庆钻探工程有限公司 随钻取心的取心系统
CN104453765B (zh) * 2013-09-24 2017-03-15 金川集团股份有限公司 绳索取芯钻具的打捞器
CN110984878B (zh) * 2019-11-08 2021-09-10 长江岩土工程有限公司 一种城市深埋隧道勘察孔绳索取芯钻进装置
CN113175307B (zh) * 2021-04-29 2022-04-15 四川大学 一种旋转密封提芯机构

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US2326435A (en) * 1940-05-24 1943-08-10 Pink T Bynum Coring apparatus
US2898086A (en) * 1954-12-02 1959-08-04 Jersey Prod Res Co Method of drilling
US2915285A (en) * 1956-05-23 1959-12-01 Jersey Prod Res Co Coring subterranean formations
US4518051A (en) * 1983-06-30 1985-05-21 Chevron Research Company Percussion actuated core sampler
US4518050A (en) * 1983-06-30 1985-05-21 Chevron Research Company Rotating double barrel core sampler
US4721172A (en) * 1985-11-22 1988-01-26 Amoco Corporation Apparatus for controlling the force applied to a drill bit while drilling

Also Published As

Publication number Publication date
EP0276724A2 (fr) 1988-08-03
CA1296319C (fr) 1992-02-25
US4875531A (en) 1989-10-24
DE3701914C1 (de) 1988-05-19
EP0276724A3 (en) 1990-08-22

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