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GB9725740D0 - Apparatus and a method for use downhole - Google Patents

Apparatus and a method for use downhole

Info

Publication number
GB9725740D0
GB9725740D0 GBGB9725740.6A GB9725740A GB9725740D0 GB 9725740 D0 GB9725740 D0 GB 9725740D0 GB 9725740 A GB9725740 A GB 9725740A GB 9725740 D0 GB9725740 D0 GB 9725740D0
Authority
GB
United Kingdom
Prior art keywords
string
longitudinal axis
cross
section
drill bit
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.)
Ceased
Application number
GBGB9725740.6A
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.)
SIBILLE PATRICK N
Original Assignee
SIBILLE PATRICK N
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 SIBILLE PATRICK N filed Critical SIBILLE PATRICK N
Priority to GBGB9725740.6A priority Critical patent/GB9725740D0/en
Publication of GB9725740D0 publication Critical patent/GB9725740D0/en
Priority to CA002255750A priority patent/CA2255750A1/en
Priority to AT98912587T priority patent/ATE307954T1/en
Priority to DE69832018T priority patent/DE69832018D1/en
Priority to AU67371/98A priority patent/AU6737198A/en
Priority to DK98912587T priority patent/DK0901560T3/en
Priority to EP98912587A priority patent/EP0901560B1/en
Priority to PCT/GB1998/000739 priority patent/WO1998042944A1/en
Priority to NO985452A priority patent/NO985452L/en
Ceased legal-status Critical Current

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • 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
    • 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
    • E21B7/10—Correction of deflected boreholes

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Drilling And Boring (AREA)

Abstract

An apparatus (10) for inclusion in a string having a drill bit located at one end is described. The apparatus (10) comprises a body (20) having a longitudinal axis which is substantially coaxial with the longitudinal axis of the string. A portion (30) of the body (20) has a cross section where the centre of mass of the body (20) on that cross section is offset from the longitudinal axis of the string. A method of reducing the variation of a drill bit from an intended path (1) in a borehole is also described, where the drill bit is coupled to one end of a string having a longitudinal axis. The method comprises the steps of including a body (20) in the string, where a portion of the body (20) has a cross section where the centre of mass of the body (20) on that cross section is offset from the longitudinal axis of the string. The string is inserted into a borehole, and at least the portion of the body (20) is rotated.
GBGB9725740.6A 1997-03-24 1997-12-05 Apparatus and a method for use downhole Ceased GB9725740D0 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GBGB9725740.6A GB9725740D0 (en) 1997-03-24 1997-12-05 Apparatus and a method for use downhole
CA002255750A CA2255750A1 (en) 1997-03-24 1998-03-24 Apparatus and a method for drilling boreholes
AT98912587T ATE307954T1 (en) 1997-03-24 1998-03-24 DRILLING APPARATUS AND METHOD
DE69832018T DE69832018D1 (en) 1997-03-24 1998-03-24 DEVICE AND METHOD FOR DRILLING
AU67371/98A AU6737198A (en) 1997-03-24 1998-03-24 Apparatus and a method for drilling boreholes
DK98912587T DK0901560T3 (en) 1997-03-24 1998-03-24 Apparatus and method for drilling boreholes
EP98912587A EP0901560B1 (en) 1997-03-24 1998-03-24 Apparatus and a method for drilling boreholes
PCT/GB1998/000739 WO1998042944A1 (en) 1997-03-24 1998-03-24 Apparatus and a method for drilling boreholes
NO985452A NO985452L (en) 1997-03-24 1998-11-23 Borehole drilling apparatus and method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US82875397A 1997-03-24 1997-03-24
US6914697 1997-03-24
GBGB9725740.6A GB9725740D0 (en) 1997-03-24 1997-12-05 Apparatus and a method for use downhole
PCT/GB1998/000739 WO1998042944A1 (en) 1997-03-24 1998-03-24 Apparatus and a method for drilling boreholes

Publications (1)

Publication Number Publication Date
GB9725740D0 true GB9725740D0 (en) 1998-02-04

Family

ID=27269125

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB9725740.6A Ceased GB9725740D0 (en) 1997-03-24 1997-12-05 Apparatus and a method for use downhole

Country Status (9)

Country Link
EP (1) EP0901560B1 (en)
AT (1) ATE307954T1 (en)
AU (1) AU6737198A (en)
CA (1) CA2255750A1 (en)
DE (1) DE69832018D1 (en)
DK (1) DK0901560T3 (en)
GB (1) GB9725740D0 (en)
NO (1) NO985452L (en)
WO (1) WO1998042944A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7066284B2 (en) * 2001-11-14 2006-06-27 Halliburton Energy Services, Inc. Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316409A (en) * 1941-12-05 1943-04-13 Lloyd R Downing Oil well straightener
US3391749A (en) * 1966-06-06 1968-07-09 Land And Marine Rental Company Method and apparatus for drilling straight wells
FR2083938A5 (en) * 1970-03-26 1971-12-17 Werkzeugbau Gmbh
GB1483789A (en) * 1974-11-07 1977-08-24 Amoco Prod Co Drilling tool for the directional drilling of boreholes in the earth
US4190122A (en) * 1978-03-22 1980-02-26 Arnold James F Spaced weight relieved drill collar string
GB2052609A (en) * 1979-06-15 1981-01-28 Nl Industries Inc Well deviation control tool and method of manufacture thereof
US4438810A (en) * 1981-10-26 1984-03-27 Dresser Industries, Inc. Apparatus for decentralizing and orienting a well logging or perforating instrument
US4623026A (en) * 1982-06-03 1986-11-18 Kemp Billy W Method and apparatus of a self-aligning sleeve for the correction of the direction of deviated boreholes
US4493380A (en) * 1982-09-29 1985-01-15 Kenneth A. Freeman Hydraulic straight hole drill collar
US4770258A (en) * 1987-04-27 1988-09-13 Falgout Sr Thomas E Well deviation control tool
US4771830A (en) * 1987-05-01 1988-09-20 Schlumberger Technology Corp. Apparatus for positioning well tools in deviated well bores
US4982802A (en) * 1989-11-22 1991-01-08 Amoco Corporation Method for stabilizing a rotary drill string and drill bit
US5220963A (en) * 1989-12-22 1993-06-22 Patton Consulting, Inc. System for controlled drilling of boreholes along planned profile
US4995466A (en) * 1989-12-22 1991-02-26 Snow Jr Roy W Method and device for stabilizing the path of a drilling tool
US5040619A (en) * 1990-04-12 1991-08-20 Halliburton Logging Services, Inc. Wireline supported perforating gun enabling oriented perforations
DE4225009C2 (en) * 1992-07-29 1996-09-05 Tanke Oil Field Dev Gmbh Method of eliminating vertical borehole downhole from earth drilling
CA2159886A1 (en) * 1995-10-04 1997-04-05 Ken D. Poffenroth Drill stabilizer

Also Published As

Publication number Publication date
NO985452D0 (en) 1998-11-23
DE69832018D1 (en) 2005-12-01
DK0901560T3 (en) 2006-03-13
CA2255750A1 (en) 1998-10-01
NO985452L (en) 1999-01-22
ATE307954T1 (en) 2005-11-15
WO1998042944A1 (en) 1998-10-01
EP0901560B1 (en) 2005-10-26
AU6737198A (en) 1998-10-20
EP0901560A1 (en) 1999-03-17

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)