EP0563950A1 - Appareil et procédé pour le forage dirigé - Google Patents

Appareil et procédé pour le forage dirigé Download PDF

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Publication number
EP0563950A1
EP0563950A1 EP93105394A EP93105394A EP0563950A1 EP 0563950 A1 EP0563950 A1 EP 0563950A1 EP 93105394 A EP93105394 A EP 93105394A EP 93105394 A EP93105394 A EP 93105394A EP 0563950 A1 EP0563950 A1 EP 0563950A1
Authority
EP
European Patent Office
Prior art keywords
casing
drilling
drill
wedge
deflection
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Withdrawn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
EP93105394A
Other languages
German (de)
English (en)
Inventor
Nikolaus Meier
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.)
ING. ANTON LOIBELSBERGER JUN.
Original Assignee
Ing Anton Loibelsberger jun
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 Ing Anton Loibelsberger jun filed Critical Ing Anton Loibelsberger jun
Publication of EP0563950A1 publication Critical patent/EP0563950A1/fr
Withdrawn legal-status Critical Current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
    • E21B10/00—Drill bits
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable
    • 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
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives

Definitions

  • the invention relates to a device for directional drilling with a drill pipe (inner pipe string), a drilling tool carrier and a drill bit having a drill bit and a non-rotating track tube (outer pipe string).
  • the invention further relates to a method for controlling such a drilling device.
  • Overlay drilling creates a borehole that is larger in diameter than the outside diameter of the casing pipes to be inserted.
  • the casing pipes are expediently designed as an outer pipe string of the drilling device, the outer pipe string being always pressed into the borehole with a short distance behind the drill bit during the production of the borehole, in order to preclude premature kettling in the borehole wall.
  • a suitable flushing agent such as air or a water / oil emulsion is discharged deep down - preferably through the inner pipe string.
  • the drilling mud consisting of cuttings and detergent, is flushed out of the borehole through the annular space between the inner pipe string and the outer pipe string.
  • Eccentric drill bits are also used for overlay drilling because the eccentric drill bit can be removed from the outer pipe string after the borehole has been completed.
  • a known eccentric drilling device is described in DE 30 24 102 C2. In this case, the eccentric drill bit is eccentrically clamped at the end of the outer pipe string in order to obtain a drilling diameter which is larger than the outer diameter of the outer pipe string. After loosening the tension, the eccentric drill bit can be pulled with the inner pipe rod.
  • the eccentric drill bit is designed to be pivotable with respect to the inner pipe string and can be pivoted through the outer pipe string in the pivoted-in state move through.
  • the swiveling takes place through the contact of the eccentric drill bit, which is covered with hard metal balls or the like, by frictional engagement after contact with the rock in the deepest hole.
  • the invention is therefore based on the object of designing and developing a drilling device of the type mentioned at the outset and of providing a method for its operation such that precise control of the drill head to achieve a certain angle in predetermined drill hole sections or to correct any deviations reasonable effort is made possible.
  • this object is achieved in that a deflection wedge is arranged in the front area of the casing, which causes a parallel displacement of the drill head consisting of the drill bit and the tool holder by rotating and longitudinally displacing the casing.
  • the object is achieved in that the actual course of the bore is measured and that by rotating and longitudinally displacing the casing (outer pipe linkage) a deflecting wedge arranged in the front area of the casing is positioned so that to change the direction of the drilling tool carrier in the desired direction from the Drilling center line is deflected.
  • the deflection wedge which is fixedly arranged in the casing and consists of a preferably conical ring segment, is positioned by rotating the casing so that it points exactly in the direction of deviation after a directional deviation has been determined for correction or for the desired bending of the borehole.
  • the drilling tool carrier rides onto the deflection wedge on a tearing round provided for this purpose. The drilling tool is removed from the drilling center line distracted. In the further drilling, no free cut for the casing pipe is produced on the side of the deflection wedge.
  • the deflection wedge is conical in the form of a ring segment. This embodiment is preferred over a "straight" deflecting wedge in that the friction and thus the material wear is reduced by the substantially larger contact area between the deflecting wedge and the drilling tool carrier.
  • the deflecting wedge is expediently welded to the casing tube in order to ensure the fixed arrangement.
  • the deflection wedge is made of hard metal. This is of particular importance in the case of long boreholes, since premature wear of the deflecting wedge must be reliably prevented here.
  • the drilling tool carrier has a taper in the region of its rear shoulder for riding on the deflecting wedge.
  • the tapering round is also made of hard metal if the drilling tool carrier has a particularly long service life.
  • guide pieces are arranged offset by 90 ° in relation to the deflection wedge in the front inner region of the casing, so that a deflection of the drill head in the direction away from the deflection wedge is made possible.
  • the guide pieces On the side facing the casing, the guide pieces have a curvature corresponding to the inside diameter of the casing and have a straight (parallel to the evasion direction) guide surface towards the drill head. These guide pieces reliably prevent the drilling tool from breaking out laterally during the deflection process.
  • the guide pieces are expediently also welded to the casing tube and consist of hard metal.
  • a measuring device determines the deviation of the drilling device in the plane running parallel to the drill pipe.
  • a known measuring device is used as the measuring device, which consists of a measuring probe, an evaluation device and a cable winch with a correspondingly long measuring cable.
  • the measuring probe is inserted into the outer tube rod by means of the measuring cable, which is preferably made of glass fiber.
  • the transmitter has a measuring range of - 20 to + 20 degrees, with a resolution of 5 arcseconds.
  • the evaluation device digitally displays the respective rising or falling of the measuring probe with a resolution of 0.01 degrees.
  • the known and preferably used measuring device works independently of temperature and cannot be influenced by electrical or magnetic force fields, lines, pipes, metals, vibrations or other external influences. A pursuit of the Measuring probe from the surface is not necessary. This enables problem-free use, irrespective of the build-up or thickness of possible overlaps, as well as the crossing under river courses, railway structures or busy streets.
  • the drilling device essentially consists of a drilling tool 1, which has a drill string (inner pipe string) 2, a drill tool carrier 3 and a drill bit 4.
  • the drill string 2 is connected in a torsionally rigid manner to the drilling tool carrier 3 and the drill bit 4.
  • a flushing agent line running through the drilling tool is not shown.
  • the drilling tool rotates centrally in a non-rotating casing tube (outer tube linkage) 5.
  • the geometry of the drill bit 6 is chosen so that it produces a free cut R that is larger than the outer diameter of the casing tube 5.
  • the front is now in the front
  • a deflecting wedge 6 is arranged in the area of the casing 5, which, by rotating the casing 5 longitudinally, causes a parallel displacement of the drill head consisting of the drill bit 4 and the drill tool carrier 3. If the deviation of the drill head from the predetermined direction is determined by a measurement, the deflection wedge 6 fastened in the casing 5 is positioned by rotating the casing 5 so that it points exactly in the direction of deviation.
  • the drilling tool carrier is raised due to the deflection wedge 6.
  • the drilling tool carrier 3 has a tapering curve 3A in the region of its rear shoulder for treading on the deflection wedge 6.
  • FIG. 3 only shows the casing 5 in a view from the deepest of the borehole for the sake of a better overview, namely along the line III-III in FIG. 1.
  • 5 guide pieces 7 by 90 in the front inner region of the casing o are arranged offset with respect to the deflection wedge 6, so that guided deflection of the drill head in the direction away from the deflection wedge 6 is made possible.
  • the guide pieces 7 expediently have on the side facing the casing 5 a curvature 8 corresponding to the inside diameter of the casing 5 and towards the drill head a guide surface 9 which is parallel to the direction of evasion.
  • the guide pieces 7, which are expediently made of hard metal and welded to the casing 5, reliably prevent the drilling tool 1 from breaking out laterally during the deflection process.

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)
EP93105394A 1992-04-02 1993-04-01 Appareil et procédé pour le forage dirigé Withdrawn EP0563950A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4211059 1992-04-02
DE19924211059 DE4211059C1 (fr) 1992-04-02 1992-04-02

Publications (1)

Publication Number Publication Date
EP0563950A1 true EP0563950A1 (fr) 1993-10-06

Family

ID=6455881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93105394A Withdrawn EP0563950A1 (fr) 1992-04-02 1993-04-01 Appareil et procédé pour le forage dirigé

Country Status (2)

Country Link
EP (1) EP0563950A1 (fr)
DE (1) DE4211059C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8448721B2 (en) 2007-12-19 2013-05-28 Schlumberger Technology Corporation Directional drilling system
US9556677B2 (en) 2012-02-17 2017-01-31 Halliburton Energy Services, Inc. Directional drilling systems
US9689616B2 (en) 2011-09-08 2017-06-27 TMT-BBG Research and Development GmbH Device for supplying rinsing medium in a hammer drill

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2603148C2 (ru) * 2012-02-17 2016-11-20 Халлибертон Энерджи Сервисез, Инк. Система наклонно-направленного бурения (варианты)
US8739902B2 (en) * 2012-08-07 2014-06-03 Dura Drilling, Inc. High-speed triple string drilling system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188014B (de) * 1962-07-09 1965-03-04 Atlas Copco Ab Gesteinsbohrgeraet mit exzentrisch arbeitendem Bohrwerkzeug
US3390730A (en) * 1965-10-07 1968-07-02 Carrier & Ateliers Stenuick Fr Apparatus for lining a borehole as a boring bit advances in the ground
US3870114A (en) * 1973-07-23 1975-03-11 Stabilator Ab Drilling apparatus especially for ground drilling
DE2657751B1 (de) * 1976-12-20 1978-06-01 Stenuick Gmbh UEberlagerungsbohrgestaenge
EP0002160A1 (fr) * 1977-11-21 1979-05-30 Stenuick France Dispositif de forage de trous dans le sol
US4962822A (en) * 1989-12-15 1990-10-16 Numa Tool Company Downhole drill bit and bit coupling
WO1992014905A2 (fr) * 1991-02-19 1992-09-03 Bergwerksverband Gmbh Dispositif pour la commande precise de forages selon la methode de foration et de sautage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024102C2 (de) * 1980-06-27 1982-09-23 Ing. Günter Klemm, Spezialunternehmen für Bohrtechnik, 5962 Drolshagen Exzenter-Bohrvorrichtung
DE3814939C1 (en) * 1988-05-03 1990-01-25 Ing. G. Klemm, Bohrtechnik Gmbh, 5962 Drolshagen, De Drilling device for directionally accurate drilling

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188014B (de) * 1962-07-09 1965-03-04 Atlas Copco Ab Gesteinsbohrgeraet mit exzentrisch arbeitendem Bohrwerkzeug
US3390730A (en) * 1965-10-07 1968-07-02 Carrier & Ateliers Stenuick Fr Apparatus for lining a borehole as a boring bit advances in the ground
US3870114A (en) * 1973-07-23 1975-03-11 Stabilator Ab Drilling apparatus especially for ground drilling
DE2657751B1 (de) * 1976-12-20 1978-06-01 Stenuick Gmbh UEberlagerungsbohrgestaenge
EP0002160A1 (fr) * 1977-11-21 1979-05-30 Stenuick France Dispositif de forage de trous dans le sol
US4962822A (en) * 1989-12-15 1990-10-16 Numa Tool Company Downhole drill bit and bit coupling
WO1992014905A2 (fr) * 1991-02-19 1992-09-03 Bergwerksverband Gmbh Dispositif pour la commande precise de forages selon la methode de foration et de sautage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8448721B2 (en) 2007-12-19 2013-05-28 Schlumberger Technology Corporation Directional drilling system
US9689616B2 (en) 2011-09-08 2017-06-27 TMT-BBG Research and Development GmbH Device for supplying rinsing medium in a hammer drill
US9556677B2 (en) 2012-02-17 2017-01-31 Halliburton Energy Services, Inc. Directional drilling systems

Also Published As

Publication number Publication date
DE4211059C1 (fr) 1993-07-08

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