EP0429765A2 - Outil pour forage dirigé - Google Patents

Outil pour forage dirigé Download PDF

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Publication number
EP0429765A2
EP0429765A2 EP90116046A EP90116046A EP0429765A2 EP 0429765 A2 EP0429765 A2 EP 0429765A2 EP 90116046 A EP90116046 A EP 90116046A EP 90116046 A EP90116046 A EP 90116046A EP 0429765 A2 EP0429765 A2 EP 0429765A2
Authority
EP
European Patent Office
Prior art keywords
drilling tool
drilling
tool housing
control device
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.)
Withdrawn
Application number
EP90116046A
Other languages
German (de)
English (en)
Other versions
EP0429765A3 (en
Inventor
Rainer Dr.-Ing. Jürgens
Rudolf Prof. Röper
Dietmar Krehl
Dagobert Feld
Joachim Dr.-Ing. Oppelt
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 EP0429765A2 publication Critical patent/EP0429765A2/fr
Publication of EP0429765A3 publication Critical patent/EP0429765A3/de
Withdrawn legal-status Critical Current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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/068—Deflecting the direction of boreholes drilled by a down-hole drilling motor
    • 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
    • E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units

Definitions

  • the invention relates to a drilling tool for sinking bores in underground rock formations, with the specification of a selectable direction course for the borehole in a design according to the preamble of claim 1, as is known for example from DE-PS 31 22, 552.
  • the invention has for its object to provide a directional drilling tool of the type mentioned, which provides an improved directional behavior with increased drilling progress.
  • the invention solves this problem with a drilling tool according to claim 1.
  • the design of the drilling tool with an impact device assigned to the chisel shaft enables drilling operation with a substantially reduced static pressing force on the drill bit, with the result of correspondingly reduced lateral force components on the drill bit, which influence the desired directional course of the drilling tool as disturbing forces.
  • the lower deflections of the drilling tool due to the reduction of the lateral forces can be compensated for with lower radial control forces, and the reduction of deflections and the reduction of control forces create in connection with increased effectiveness of the Ge stone destruction process on the drill bit significantly increased drilling progress.
  • the drilling tool can be used with particularly favorable results in hard or brittle rock and in soil conditions with layers that are unfavorable for the directional guidance.
  • connection means e.g. Screw thread
  • connection means e.g. Screw thread
  • a drill pipe string 2 connectable with a drill pipe string 2 and comprises a tool housing which is non-rotatable during drilling operation and has an upper housing part 3, which is provided with stabilizer blades 4 in the lower region, and a lower housing part 5, with stabilizer blades 6 in its upper region and with in its lower region four radially outwardly and inwardly displaceable force transducers 7 is provided in the form of thrust pieces which, in contact with the wall of the borehole 1, determine the alignment of the drilling tool and thus the course of the borehole.
  • connection means e.g. Screw thread
  • the drilling tool further comprises a chisel shaft 8, which is rotatably mounted in the upper housing part 3, extends through the lower housing part 5, is rotatably mounted in the latter and carries a drill bit 10 on its end 9 projecting from the lower housing part 5.
  • the chisel shaft 8 is designed as a hollow shaft and delimits a central longitudinal channel 11 which defines the interior of the drill pipe string 2 continues and opens out in the area of the drill bit 10.
  • a striking device 12 is provided between the upper and the lower housing part 3, 5 and forms part of the chisel shaft 8.
  • the striking device 12 can be of any known or suitable design and generates oscillating axial forces with the aid of the drilling fluid in the lower part 13 of the bit shaft 8, which superimpose a small, measurable static axial force and impart a pressure component with a swelling characteristic to the bit 10.
  • the upper end of the chisel shaft 8 is connected to a rotary drive 14, which is only indicated schematically and is accommodated in the upper housing part 3 and which sets the chisel shaft 8 in a preferably slow rotation and gives the drill bit 10 a rotary conversion movement.
  • control device 15 which contains sensors for determining the course of the borehole - i.e. the respective position of the drilling tool, in particular its inclination - as well as an evaluation device for evaluating determined data and a transmitter for issuing control commands by means of which the pressure-actuated force transducers 7, of which at least four are arranged distributed over the circumference, are radially positioned and fixed in position will.
  • the measurement and evaluation part of the control device 15 can independently determine the course of the direction of the borehole 1 according to a predetermined program and can be equipped with its own voltage source. However, as is the case in the examples shown, it can also be connected via a connecting cable 16 to an above-ground control control device (not shown) for continuous data exchange. At the same time, the power supply of the control device 15 can be carried out via such a connecting cable 16, which expediently runs inside the drill pipe string 2 and then at least over part of its length in the annular space of the bore 1 drilled with the drilling tool be made. Compressed air is preferably used as the flushing medium, in particular for bores in the mining or construction industry, which are often only created a few hundred meters deep.
  • compressed air as a flushing medium improves the dissolving effect on cuttings in hard formations and favors the provision of a connecting cable, in the place of which other transmission means are used in the case of compressed air as flushing medium, for example slip ring transmitters or transformer couplings.
  • compressed air as flushing medium
  • information can be transmitted through pressure changes in the flushing column, as is common in deep drilling technology.
  • the units actuated by the drilling fluid, such as the rotary drive and the impact device, are each designed to suit the drilling fluid used.
  • FIG. 2 illustrates an embodiment in which a shock absorber 17 is assigned to the chisel shaft 8 above the impact device 12.
  • This shock absorber is part of the chisel shaft 8 and is arranged in the area between the housing parts 3, 5 at the point at which the striking device 12 is located in FIG. 1.
  • the striking device 12 is arranged in the embodiment according to FIG. 2 in the area of the chisel shaft 8 located inside the housing part 5.
  • the control device 15 has found an arrangement in the lower region of the housing part 15 and at the level of the force transmitter 7, and this control device 15 is also connected to an above-ground control console via a connecting cable 16.
  • the shock absorber 17 protects the threaded connections when axial shock loads occur, so that the amplitude of the axial force vibrations can be safely increased for the threaded connections, but also for the components of the measuring and evaluation part of the control device 15. This also goes hand in hand with an increase in drilling progress.

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)
EP19900116046 1989-11-30 1990-08-22 Directional drilling tool Withdrawn EP0429765A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3939538 1989-11-30
DE3939538A DE3939538A1 (de) 1989-11-30 1989-11-30 Richtungsbohrwerkzeug

Publications (2)

Publication Number Publication Date
EP0429765A2 true EP0429765A2 (fr) 1991-06-05
EP0429765A3 EP0429765A3 (en) 1992-07-22

Family

ID=6394464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900116046 Withdrawn EP0429765A3 (en) 1989-11-30 1990-08-22 Directional drilling tool

Country Status (5)

Country Link
US (1) US5156222A (fr)
EP (1) EP0429765A3 (fr)
CA (1) CA2031093A1 (fr)
DE (1) DE3939538A1 (fr)
NO (1) NO905190L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997044564A1 (fr) * 1996-05-17 1997-11-27 Andergauge Limited Appareil de forage

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368215A (en) * 1992-09-08 1994-11-29 United States Surgical Corporation Surgical apparatus and detachable anvil rod therefor
US5513713A (en) * 1994-01-25 1996-05-07 The United States Of America As Represented By The Secretary Of The Navy Steerable drillhead
US5738178A (en) * 1995-11-17 1998-04-14 Baker Hughes Incorporated Method and apparatus for navigational drilling with a downhole motor employing independent drill string and bottomhole assembly rotary orientation and rotation
AUPO062296A0 (en) * 1996-06-25 1996-07-18 Gray, Ian A system for directional control of drilling
US6609579B2 (en) 1997-01-30 2003-08-26 Baker Hughes Incorporated Drilling assembly with a steering device for coiled-tubing operations
WO1998034003A1 (fr) * 1997-01-30 1998-08-06 Baker Hughes Incorporated Ensemble de forage avec dispositif de guidage pour operations effectuees avec des colonnes de production spiralees
US6102138A (en) * 1997-08-20 2000-08-15 Baker Hughes Incorporated Pressure-modulation valve assembly
US6470974B1 (en) 1999-04-14 2002-10-29 Western Well Tool, Inc. Three-dimensional steering tool for controlled downhole extended-reach directional drilling
CA2260612C (fr) * 1999-02-03 2005-04-26 Dresser Industries, Inc. Marteau pneumatique a forage dirige
US8408333B2 (en) 2006-05-11 2013-04-02 Schlumberger Technology Corporation Steer systems for coiled tubing drilling and method of use
CN102808580B (zh) * 2012-08-10 2014-07-30 中国地质大学（武汉） 一种煤层气水平开采孔激光定向钻进钻具及其钻进方法
SE541325C2 (sv) * 2017-03-03 2019-07-02 Goeran Jysky Med Firma Inva Goeran Jysky Sänkborrningsanordning
CN108798501B (zh) * 2018-05-08 2019-10-25 中国石油大学(华东) 轴向水力冲击钻井提速工具
USD1054463S1 (en) * 2023-10-09 2024-12-17 Tmt Tapping Measuring Technology Sàrl Drilling tool

Family Cites Families (23)

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Publication number Priority date Publication date Assignee Title
US3062303A (en) * 1960-03-21 1962-11-06 Shell Oil Co Method and apparatus for controlling hole direction and inclination
GB1212915A (en) * 1968-01-19 1970-11-18 Rolls Royce Apparatus for bore-hole drilling
DE1926460A1 (de) * 1968-05-25 1969-11-27 Rolls Royce Ablenkeinrichtung fuer Tiefbohrgeraete,deren Bohrkopf durch einen im Bohrloch befindlichen Antriebsmotor angetrieben wird
US3706348A (en) * 1971-12-06 1972-12-19 Shell Oil Co Well deviation control system
US3888319A (en) * 1973-11-26 1975-06-10 Continental Oil Co Control system for a drilling apparatus
US4042046A (en) * 1974-02-25 1977-08-16 The Richmond Manufacturing Company Directional control mechanism for underground driven pipes and conduits
FR2445431A1 (fr) * 1978-12-29 1980-07-25 Inst Francais Du Petrole Garniture de forage avec etages de stabilisation a lames retractables
US4466496A (en) * 1979-07-16 1984-08-21 Mustang Trip Saver, Inc. Technique for damping oscillations in a drill string
US4241796A (en) * 1979-11-15 1980-12-30 Terra Tek, Inc. Active drill stabilizer assembly
US4402495A (en) * 1979-12-10 1983-09-06 Hughes Tool Company Drill string shock absorber with pressurized lubricant system
DE3000239C2 (de) * 1980-01-05 1983-10-20 Bergwerksverband Gmbh, 4300 Essen Einrichtung zur Herstellung zielgerichteter Bohrungen
DE3046122C2 (de) * 1980-12-06 1984-05-17 Bergwerksverband Gmbh, 4300 Essen Einrichtungen zur Herstellung zielgerichteter Bohrungen mit einer Zielbohrstange
US4394881A (en) * 1980-06-12 1983-07-26 Shirley Kirk R Drill steering apparatus
US4367797A (en) * 1980-08-25 1983-01-11 Amf Incorporated Cable transfer sub for drill pipe and method
US4438820A (en) * 1981-11-16 1984-03-27 Gibson Paul N Grade monitoring and steering apparatus
US4592432A (en) * 1985-06-03 1986-06-03 Williams Russell R Automatically operated boring head
US4705119A (en) * 1985-09-16 1987-11-10 Institut Gornogo Dela So An Sssr Annular air-hammer apparatus for drilling holes
AT388407B (de) * 1987-12-04 1989-06-26 Hammer Friedrich Vorrichtung zum unterirdischen verlegen von leitungen od.dgl.
US4834193A (en) * 1987-12-22 1989-05-30 Gas Research Institute Earth boring apparatus and method with control valve
US4852669A (en) * 1988-05-09 1989-08-01 Walker Thomas A Directional downhole drill apparatus
DE8809108U1 (de) * 1988-07-15 1988-09-01 Schmidt, Paul, 5940 Lennestadt Langkörper
US4854397A (en) * 1988-09-15 1989-08-08 Amoco Corporation System for directional drilling and related method of use
US4958689A (en) * 1988-12-30 1990-09-25 Gas Research Institute Method of providing a high pressure surge of working fluid to an underground percussive mole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997044564A1 (fr) * 1996-05-17 1997-11-27 Andergauge Limited Appareil de forage

Also Published As

Publication number Publication date
EP0429765A3 (en) 1992-07-22
DE3939538A1 (de) 1991-06-13
NO905190D0 (no) 1990-11-29
NO905190L (no) 1991-05-31
US5156222A (en) 1992-10-20
CA2031093A1 (fr) 1991-05-31
DE3939538C2 (fr) 1991-09-12

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