ATE113691T1 - PRODUCTION OF SPECIFIED HOLES IN THE LINE OF THE HOLE. - Google Patents

PRODUCTION OF SPECIFIED HOLES IN THE LINE OF THE HOLE.

Info

Publication number
ATE113691T1
ATE113691T1 AT89114510T AT89114510T ATE113691T1 AT E113691 T1 ATE113691 T1 AT E113691T1 AT 89114510 T AT89114510 T AT 89114510T AT 89114510 T AT89114510 T AT 89114510T AT E113691 T1 ATE113691 T1 AT E113691T1
Authority
AT
Austria
Prior art keywords
bore hole
hole
progress
centre bit
production
Prior art date
Application number
AT89114510T
Other languages
German (de)
Inventor
Heinrich Sparenberg
Theo Koehler
Original Assignee
Rhein Ruhr Bohr Gmbh
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 Rhein Ruhr Bohr Gmbh filed Critical Rhein Ruhr Bohr Gmbh
Application granted granted Critical
Publication of ATE113691T1 publication Critical patent/ATE113691T1/en

Links

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
    • 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
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
    • 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
    • E21B7/064—Deflecting the direction of boreholes specially adapted drill bits therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (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)
  • Geophysics (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

A solid drilling tool (1) which is arranged on a drill-pipe string (2) and consists of an outer sleeve (3) and a centre bit (4) which is detachably fastened in the outer sleeve (3) and can be removed through the drill-pipe string (2) after release is used for producing bore holes in a given direction, in the course of which the actual progress of the bore hole is measured from time to time at the bottom (8) of the bore hole after removal of the centre bit (4), and then drilling is continued with the centre bit (4) under drilling conditions acting in the direction of the desired progress of the bore hole. In this way, the actual progress can be brought substantially closer to the desired progress of the bore hole. <IMAGE>
AT89114510T 1989-08-05 1989-08-05 PRODUCTION OF SPECIFIED HOLES IN THE LINE OF THE HOLE. ATE113691T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89114510A EP0412174B1 (en) 1989-08-05 1989-08-05 Production of bore holes in a given direction

Publications (1)

Publication Number Publication Date
ATE113691T1 true ATE113691T1 (en) 1994-11-15

Family

ID=8201725

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89114510T ATE113691T1 (en) 1989-08-05 1989-08-05 PRODUCTION OF SPECIFIED HOLES IN THE LINE OF THE HOLE.

Country Status (3)

Country Link
EP (1) EP0412174B1 (en)
AT (1) ATE113691T1 (en)
DE (1) DE58908602D1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894722A (en) * 1953-03-17 1959-07-14 Ralph Q Buttolph Method and apparatus for providing a well bore with a deflected extension
US2885182A (en) * 1956-09-24 1959-05-05 Driltrol Drilling and deflecting tool
US3241624A (en) * 1963-01-24 1966-03-22 Central Mine Equipment Company Earth boring equipment including two part rotary cutting head
CH459930A (en) * 1964-10-02 1968-07-31 Alkirk Inc Method for steering a shaft drilling machine and shaft drilling machine for carrying out the method
US3635295A (en) * 1969-12-02 1972-01-18 Fenix & Scisson Inc Apparatus for drilling a small borehole downwardly from the bottom of a large borehole
US3945444A (en) * 1975-04-01 1976-03-23 The Anaconda Company Split bit casing drill

Also Published As

Publication number Publication date
DE58908602D1 (en) 1994-12-08
EP0412174A1 (en) 1991-02-13
EP0412174B1 (en) 1994-11-02

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee