GB2325016B - Improvements in or relating to steerable rotary drilling systems - Google Patents

Improvements in or relating to steerable rotary drilling systems

Info

Publication number
GB2325016B
GB2325016B GB9817935A GB9817935A GB2325016B GB 2325016 B GB2325016 B GB 2325016B GB 9817935 A GB9817935 A GB 9817935A GB 9817935 A GB9817935 A GB 9817935A GB 2325016 B GB2325016 B GB 2325016B
Authority
GB
United Kingdom
Prior art keywords
relating
rotary drilling
drilling systems
steerable rotary
steerable
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
GB9817935A
Other versions
GB9817935D0 (en
GB2325016A (en
Inventor
John Denzil Barr
John Martin Clegg
William C Motion
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.)
Camco Drilling Group Ltd
Original Assignee
Camco Drilling Group Ltd
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
Priority claimed from GBGB9503829.5A external-priority patent/GB9503829D0/en
Application filed by Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Priority to GB9817935A priority Critical patent/GB2325016B/en
Publication of GB9817935D0 publication Critical patent/GB9817935D0/en
Publication of GB2325016A publication Critical patent/GB2325016A/en
Application granted granted Critical
Publication of GB2325016B publication Critical patent/GB2325016B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Earth Drilling (AREA)
GB9817935A 1995-02-25 1996-02-14 Improvements in or relating to steerable rotary drilling systems Expired - Lifetime GB2325016B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9817935A GB2325016B (en) 1995-02-25 1996-02-14 Improvements in or relating to steerable rotary drilling systems

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9503829.5A GB9503829D0 (en) 1995-02-25 1995-02-25 "Improvememnts in or relating to steerable rotary drilling systems"
GB9603121A GB2298218B (en) 1995-02-25 1996-02-14 Improvements in or relating to steerable rotary drilling systems
GB9817935A GB2325016B (en) 1995-02-25 1996-02-14 Improvements in or relating to steerable rotary drilling systems

Publications (3)

Publication Number Publication Date
GB9817935D0 GB9817935D0 (en) 1998-10-14
GB2325016A GB2325016A (en) 1998-11-11
GB2325016B true GB2325016B (en) 1999-03-17

Family

ID=26306585

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9817935A Expired - Lifetime GB2325016B (en) 1995-02-25 1996-02-14 Improvements in or relating to steerable rotary drilling systems

Country Status (1)

Country Link
GB (1) GB2325016B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6601658B1 (en) 1999-11-10 2003-08-05 Schlumberger Wcp Ltd Control method for use with a steerable drilling system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2408757B (en) * 2003-12-06 2006-11-15 Schlumberger Holdings Actuator Valve and Bias Unit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257182A (en) * 1991-06-25 1993-01-06 Camco Drilling Group Ltd Improvements in or relating to steerable rotary drilling systems

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257182A (en) * 1991-06-25 1993-01-06 Camco Drilling Group Ltd Improvements in or relating to steerable rotary drilling systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6601658B1 (en) 1999-11-10 2003-08-05 Schlumberger Wcp Ltd Control method for use with a steerable drilling system

Also Published As

Publication number Publication date
GB9817935D0 (en) 1998-10-14
GB2325016A (en) 1998-11-11

Similar Documents

Publication Publication Date Title
GB2298216B (en) Improvements in or relating to steerable rotary drilling systems
GB2298215B (en) Improvements in or relating to steerable rotary drilling systems
GB2298218B (en) Improvements in or relating to steerable rotary drilling systems
GB2298217B (en) Improvements in or relating to steerable rotary drilling systems
AU1851192A (en) Improvements in or relating to steerable rotary drilling systems
GB2296880B (en) Improvements in or relating to rotary drill bits
GB9505783D0 (en) Improvements in or relating to rotary drill bits
GB2289488B (en) Improvements in or relating to down-hole tools
GB9509555D0 (en) Improvements in or relating to rotary drill bits
GB9609659D0 (en) Improvements in or relating to steerable rotary drilling systems
AU4629496A (en) Improvements in or relating to drill bits
GB9519200D0 (en) Improvements in or relating to rotary drag devices
GB2325016B (en) Improvements in or relating to steerable rotary drilling systems
GB2300657B (en) Improvements in or relating to rotary drill bits
GB2318993B (en) Improvements in or relating to rotary drill bits
AU689696B2 (en) Improvements in or relating to steerable rotary drilling systems
GB2287977B (en) Improvements in or relating to barrier systems
GB9505923D0 (en) Improvements in or relating to rotary drill bits
GB9616038D0 (en) Improvements in or relating to steering mechanisms
GB9410974D0 (en) Improvements in or relating to barrier systems
GB9415602D0 (en) Improvements in or relating to rotary atomisers
GB9600064D0 (en) Improvements in or relating to rotary atomisers

Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20160213