EP0242728B1 - Kernbohrwerkzeug für Gesteinsbohrungen - Google Patents

Kernbohrwerkzeug für Gesteinsbohrungen Download PDF

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Publication number
EP0242728B1
EP0242728B1 EP87105301A EP87105301A EP0242728B1 EP 0242728 B1 EP0242728 B1 EP 0242728B1 EP 87105301 A EP87105301 A EP 87105301A EP 87105301 A EP87105301 A EP 87105301A EP 0242728 B1 EP0242728 B1 EP 0242728B1
Authority
EP
European Patent Office
Prior art keywords
core
shaft
drilling fluid
inner pipe
drilling tool
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
EP87105301A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0242728A2 (de
EP0242728A3 (en
Inventor
Friedhelm Makohl
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 Christensen Co
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 Christensen Co, Eastman Teleco Co filed Critical Eastman Christensen Co
Publication of EP0242728A2 publication Critical patent/EP0242728A2/de
Publication of EP0242728A3 publication Critical patent/EP0242728A3/de
Application granted granted Critical
Publication of EP0242728B1 publication Critical patent/EP0242728B1/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
    • 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

Definitions

  • the invention relates to a core drilling tool for rock drilling according to the preamble of claim 1.
  • the core device is connected via a universal joint to the stator of a drilling fluid-driven motor which works according to the Moineau principle.
  • the core device is permanently installed so that a core that has been drilled out can only be obtained after the tool has been taken up to the drilling platform and then dismantled.
  • the central passage for drilling fluid present in the stator of this tool forms a bypass to the working chambers of the motor and serves to supply drilling fluid to the interior of the core device before the drilling process starts, without starting the motor.
  • a core drilling tool which is driven by a turbine and in which a core tube insert can be brought up to the drilling platform through a central passage in the turbine by means of a safety catch with an otherwise installed drilling tool .
  • the invention has for its object to provide a core drilling tool that allows the extraction of cores by separately pulling the core device when using a drilling fluid motor with a helical toothed rotor and a corresponding stator according to the Moineau principle for driving the drill bit.
  • an embodiment of the core drilling tool according to the characterizing features of claim 1.
  • the core device By dimensioning the central passage of the shaft in comparison to the outer diameter of the core device, the core device can be pulled upward through the shaft, if necessary, or inserted into the operating position from top to bottom.
  • This feature also enables the core drilling tool to be used to extract multiple cores from the same borehole of an uncased seabed from a floating drilling platform.
  • the design of the inner diameter of the hollow stator and of the connecting element taking into account the outer diameter of the core tube and the eccentricity of the motor, enables the stator to describe the eccentric movement caused by the rotor and stator geometry, without coming into contact with the core tube and its central Interfering with location.
  • the locking device ensures the automatic axial fixation of the annular gap between the drill bit and the front end of the inner tube after it has reached the operating position by gravity or with additional support from the drilling fluid pumps.
  • the seals between the outer tube of the core tube and the inner wall of the shaft allow a flushing passage prevented by the interior of the stator, so that the entire drilling fluid stream has to make its way across the working space of the motor.
  • the core drilling tool comprises a shank 1, which can be connected to a drill string (not shown) via a threaded sleeve 2.
  • An outer tube 4 is rotatably mounted on the shaft 1 by means of a bearing arrangement 3 and carries a core drill bit or a core bit 5 at the lower end.
  • the shaft 1 has a central passage 6 with the inner diameter d1 and is connected at the lower end via a threaded connection 7 to a thin-walled, flexible sleeve 8 serving as a connecting member.
  • This sleeve is connected via a further threaded connection 9 to the hollow stator 10 of a drilling fluid driven motor 11.
  • the rotor 12 of this motor is located on the inside of the outer tube 4.
  • the rotor 12 and stator 10 are provided with helical teeth and are in engagement with one another to form a working space 47.
  • the engine works according to the so-called Moineau principle. If one of the two parts is fixed in its radial position in such a motor, the other part executes an eccentric path. Since in the present case the rotor 12 is fixed radially by the bearing of the outer tube 4 by means of the bearing arrangement 3, the stator 10 must describe this path. The corresponding radial displacement with respect to the shaft 1 while at the same time preventing a rotational movement is made possible by the flexible thin-walled sleeve 8.
  • the diameter d2 of the stator 10 and the flexible thin-walled sleeve 8 is larger by the value of the eccentricity e of the motor 11 than the diameter d1 of the central passage 6 in the shaft 1. This ensures that the diameter of the envelope of the eccentric movement of the stator 10 has approximately the same diameter d3 as the central passage 6 of the shaft 1 with the diameter d1.
  • a core device 13 is arranged within the central passage 6 of the shaft 1 and in the interior formed by the flexible sleeve 8, the rotor 12 and the lower part of the outer tube 4.
  • the core device 13 comprises an inner tube 14, the lower end face 15 of which adjoins an inwardly extending shoulder 17 of the core bit 5 to form a gap 16 for the passage of drilling fluid.
  • a latching device 18 is used for axially fixing the core device 13.
  • the locking fingers 23 are designed as a segmented catch mandrel 27 and can be overlapped with a sleeve of a catch tool and released from the ras in the circumferential groove 25 by being pressed together.
  • the core device 13 can then be brought up to the drilling platform by means of a wire rope through the motor 11, the flexible thin-walled sleeve 8, the shaft 1 and the remaining drill pipe.
  • the inner tube 14 of the core device 13 is coupled to the latching device 18 by a rotary bearing 28.
  • This pivot bearing 28 enables a relative rotation between the inner tube 14 with respect to the shaft 1 if the inner tube 14 is blocked by a core that has grown into it, but the linkage and thus the shaft 1 are to be rotated as well. A relative rotation within the locking device 18, which could lead to premature wear of the locking elements, is thereby avoided.
  • the inner tube 14 carries at the upper end a check valve device 29, consisting of a central bore 30, a ball 31 used to close the central bore 30 and radial bores 32.
  • the check valve device 29 brings about drilling fluid compensation between the interior of the inner tube 14 and a space that between the inner tube 14 and the interior of the flexible thin-walled sleeve 8 and the stator 10 ago. This space communicates with the annular space 44 located below the engine.
  • the check valve device 29 prevents drilling fluid from constantly flowing through the inner tube 14 from top to bottom and thereby washing out the core. Conversely, however, it enables the one growing into the inner tube 14 Core displaced drilling fluid to emerge from the inner tube 14.
  • the outer tube 4 is provided with centering sleeves 33 which center and stabilize the inner tube 14. These centering sleeves 33 have axial drilling fluid channels 34.
  • a flood valve 35 is arranged between the lower centering sleeve 33 and the core drill bit 5 and axially clamped between spacers 36.
  • the flood valve 35 has a first lower region 37, which widens conically from bottom to top, a second central cylindrical region 38, a third transition region 39 on a smaller diameter with rounded transitions from the end face to the lateral surface of a subsequent fourth cylindrical region 40, one Transition to a further smaller diameter and a fifth region 41, which widens conically from bottom to top.
  • the importance of the flood valve 35 is to swirl the cuttings contained in the drilling fluid flowing in and up through the core drilling bit 5 into the core drilling tool when pulling the core device 13 and to further entrainment and possible penetration into the motor 11 prevent. The swirling takes place by the drilling fluid flowing past the correspondingly configured regions 37 to 41 of the flood valve 35.
  • the core drilling tool according to the invention can be lowered with or without a core device 13 into a borehole or onto the sea floor. If it is lowered without a core device 13, after reaching the bottom of the borehole or the seabed, the core device 13 is let into the strand and retracted by gravity or by means of the drilling fluid pumps. Because during this process the flow channel of the drill pipe and drilling fluid located in the central passage 6 of the shaft 1 can emerge unhindered through the core drill bit 5, the motor 11 is not set in motion.
  • the drilled rock core enters the inner tube 14 and displaces the drilling fluid located in the inner tube 14, via the check valve device 29 in the annular space formed between the inner tube 14 and the flexible thin-walled sleeve 8 and the stator 10.
  • a catch tool located on a wire rope is pumped down via the flushing channel of the drill pipe and the central passage 6 of the shaft 1, which overlaps when the catch mandrel 27 is reached and the catch fingers 23 are pressed inward and the catch device 18 is released.
  • core tube is now pulled by means of the rope, core springs 45 located in the lower region of the inner tube 14 penetrate into the drilled core and separate it from the rock base when the core is pulled further.
  • the core device 13 can now be pulled upwards and the core drilled can be examined.
  • the core drilling process can then be continued with a further core device 13 or after removal of the core with the same core device 13 after it has been inserted into the core drilling tool as already described.
  • a completely similar core device 13 one can also be used in which the inner tube 14 was unscrewed from a thread connection 46 by the rotary bearing 28 and the latching device 18 and the latter parts were joined together with a new inner tube 14.

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)
EP87105301A 1986-04-19 1987-04-10 Kernbohrwerkzeug für Gesteinsbohrungen Expired - Lifetime EP0242728B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863613265 DE3613265A1 (de) 1986-04-19 1986-04-19 Kernbohrwerkzeug fuer gesteinsbohrungen
DE3613265 1986-04-19

Publications (3)

Publication Number Publication Date
EP0242728A2 EP0242728A2 (de) 1987-10-28
EP0242728A3 EP0242728A3 (en) 1989-02-22
EP0242728B1 true EP0242728B1 (de) 1992-03-11

Family

ID=6299063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105301A Expired - Lifetime EP0242728B1 (de) 1986-04-19 1987-04-10 Kernbohrwerkzeug für Gesteinsbohrungen

Country Status (5)

Country Link
US (1) US4773489A (cs)
EP (1) EP0242728B1 (cs)
CA (1) CA1285550C (cs)
DE (1) DE3613265A1 (cs)
NO (1) NO871621L (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971538A (zh) * 2016-06-14 2016-09-28 中海油能源发展股份有限公司 一种用于可内调节取心工具的调节装置

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825225A1 (de) * 1988-07-25 1990-02-01 Eastman Christensen Co Bohrwerkzeug
US5112188A (en) * 1991-01-25 1992-05-12 Barnetche Gonzalez Eduardo Multiple stage drag and dynamic turbine downhole motor
US5098258A (en) * 1991-01-25 1992-03-24 Barnetche Gonzalez Eduardo Multiple stage drag turbine downhole motor
US5290145A (en) * 1991-01-25 1994-03-01 Barnetche Gonzales Eduardo Multiple stage drag and dynamic pump
US5568838A (en) * 1994-09-23 1996-10-29 Baker Hughes Incorporated Bit-stabilized combination coring and drilling system
US6170572B1 (en) 1999-05-25 2001-01-09 Delaware Capital Formation, Inc. Progressing cavity pump production tubing having permanent rotor bearings/core centering bearings
US6920946B2 (en) * 2001-09-27 2005-07-26 Kenneth D. Oglesby Inverted motor for drilling rocks, soils and man-made materials and for re-entry and cleanout of existing wellbores and pipes
CA2462987C (en) * 2004-04-01 2005-02-22 Brent Alexander Clark Vibration-dampening drill collar
US8056251B1 (en) 2009-09-21 2011-11-15 Regency Technologies Llc Top plate alignment template device
EP2339109B1 (en) 2009-12-23 2017-12-20 Lövab Aktiebolag Earth drilling tool and method
GB201010702D0 (en) * 2010-06-25 2010-08-11 Scott Edward D Hollow turbine power module
CN102102498B (zh) * 2010-11-26 2013-05-22 浙江大学 软岩层钻探专用的绳索取芯系统及其使用方法
CA2784195C (en) 2011-08-01 2014-08-05 Groupe Fordia Inc. Core barrel assembly including a valve
US10563475B2 (en) 2015-06-11 2020-02-18 Saudi Arabian Oil Company Sealing a portion of a wellbore
US9650859B2 (en) 2015-06-11 2017-05-16 Saudi Arabian Oil Company Sealing a portion of a wellbore
US9482062B1 (en) * 2015-06-11 2016-11-01 Saudi Arabian Oil Company Positioning a tubular member in a wellbore
CN105156056B (zh) * 2015-07-10 2018-01-12 吉林大学 天然气水合物孔底冷冻液动绳索取心钻具及取心方法
CN105672890B (zh) * 2016-03-24 2017-10-31 四川深远石油钻井工具股份有限公司 一种抽吸式微取芯钻探钻头
CN106761382B (zh) * 2016-12-20 2018-12-04 西南石油大学 一种深井取芯装置及其操作方法
CN106907106B (zh) * 2017-04-29 2023-05-16 吉林大学 热水驱动自旋转冰层取芯钻进方法及装置
CN109403901B (zh) * 2018-11-08 2023-11-10 深圳大学 取芯钻机钻井液通道结构
CN109505548B (zh) * 2018-11-08 2024-04-12 深圳大学 取芯钻具驱动结构
CN109403899B (zh) 2018-11-08 2023-12-08 深圳大学 取芯钻机驱动系统
CN109403898B (zh) * 2018-11-08 2023-11-10 深圳大学 取芯钻机钻取机构
CN110823631B (zh) * 2019-12-04 2022-07-12 大连泛华建设咨询管理有限公司 一种混凝土钻芯机
WO2023177648A1 (en) * 2022-03-14 2023-09-21 Baker Hughes Oilfield Operations Llc Esp with improved deployment for live intervention
US12366148B2 (en) 2022-09-07 2025-07-22 Baker Hughes Oilfield Operations Llc System and method for deploying ESP on coiled tubing

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Publication number Priority date Publication date Assignee Title
US2910273A (en) * 1956-01-19 1959-10-27 Neyrpic Ets Corer for turbine driven well drilling units
US2944792A (en) * 1956-05-28 1960-07-12 Neyrpic Ets Turbines for drilling and coring
US3055440A (en) * 1957-10-28 1962-09-25 Turbodrill Internat Corp Turbo-coredrill for ground drilling
US2953873A (en) * 1958-07-17 1960-09-27 Rene E Tatro Building construction
US3903975A (en) * 1972-08-23 1975-09-09 Tigre Tierra Drilling apparatus with down-the-hole motor
FR2226544B1 (cs) * 1973-04-17 1977-07-29 Petroles Cie Francaise
US3990524A (en) * 1974-06-03 1976-11-09 Tigre Tierra, Inc. Down-the-hole motor for rotary drill rod and process for drilling using the same
DE2953873C2 (de) * 1979-05-11 1985-01-31 Christensen, Inc., Salt Lake City, Utah Kernbohreinrichtung für Gesteinsbohrlöcher
DE2919007C2 (de) * 1979-05-11 1982-07-22 Christensen, Inc., 84115 Salt Lake City, Utah Kernbohreinrichtung für Gesteinsbohrlöcher
US4466497A (en) * 1982-03-19 1984-08-21 Soinski Alexander F Wireline core barrel
US4518050A (en) * 1983-06-30 1985-05-21 Chevron Research Company Rotating double barrel core sampler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971538A (zh) * 2016-06-14 2016-09-28 中海油能源发展股份有限公司 一种用于可内调节取心工具的调节装置
CN105971538B (zh) * 2016-06-14 2018-03-16 中海油能源发展股份有限公司 一种用于可内调节取心工具的调节装置

Also Published As

Publication number Publication date
CA1285550C (en) 1991-07-02
DE3613265A1 (de) 1987-10-22
EP0242728A2 (de) 1987-10-28
US4773489A (en) 1988-09-27
NO871621L (no) 1987-10-20
EP0242728A3 (en) 1989-02-22
DE3613265C2 (cs) 1988-06-30
NO871621D0 (no) 1987-04-15

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