GB0520200D0 - Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis - Google Patents

Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis

Info

Publication number
GB0520200D0
GB0520200D0 GBGB0520200.7A GB0520200A GB0520200D0 GB 0520200 D0 GB0520200 D0 GB 0520200D0 GB 0520200 A GB0520200 A GB 0520200A GB 0520200 D0 GB0520200 D0 GB 0520200D0
Authority
GB
United Kingdom
Prior art keywords
axis
deriving
missing
steering tool
rate gyroscope
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.)
Granted
Application number
GBGB0520200.7A
Other versions
GB2415531B (en
GB2415531A (en
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 Holdings LLC
Original Assignee
Baker Hughes Inc
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 Baker Hughes Inc filed Critical Baker Hughes Inc
Priority claimed from GB0417694A external-priority patent/GB2405927B/en
Publication of GB0520200D0 publication Critical patent/GB0520200D0/en
Publication of GB2415531A publication Critical patent/GB2415531A/en
Application granted granted Critical
Publication of GB2415531B publication Critical patent/GB2415531B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
GB0520200A 2003-08-07 2004-08-09 A method of compensating measurements made by a downhole survey instrument Expired - Fee Related GB2415531B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49330003P 2003-08-07 2003-08-07
GB0417694A GB2405927B (en) 2003-08-07 2004-08-09 Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis

Publications (3)

Publication Number Publication Date
GB0520200D0 true GB0520200D0 (en) 2005-11-09
GB2415531A GB2415531A (en) 2005-12-28
GB2415531B GB2415531B (en) 2006-04-05

Family

ID=35463702

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0520199A Expired - Fee Related GB2415505B (en) 2003-08-07 2004-08-09 Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis
GB0520200A Expired - Fee Related GB2415531B (en) 2003-08-07 2004-08-09 A method of compensating measurements made by a downhole survey instrument

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0520199A Expired - Fee Related GB2415505B (en) 2003-08-07 2004-08-09 Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis

Country Status (1)

Country Link
GB (2) GB2415505B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6631563B2 (en) * 1997-02-07 2003-10-14 James Brosnahan Survey apparatus and methods for directional wellbore surveying
GB2369188B (en) * 1997-12-04 2002-07-17 Baker Hughes Inc Measurement-while-drilling assembly using gyroscopic devices and methods of bias removal
US6347282B2 (en) * 1997-12-04 2002-02-12 Baker Hughes Incorporated Measurement-while-drilling assembly using gyroscopic devices and methods of bias removal
US6529834B1 (en) * 1997-12-04 2003-03-04 Baker Hughes Incorporated Measurement-while-drilling assembly using gyroscopic devices and methods of bias removal
US7000700B2 (en) * 2002-07-30 2006-02-21 Baker Hughes Incorporated Measurement-while-drilling assembly using real-time toolface oriented measurements

Also Published As

Publication number Publication date
GB2415505A (en) 2005-12-28
GB2415531B (en) 2006-04-05
GB2415531A (en) 2005-12-28
GB2415505B (en) 2006-04-05
GB0520199D0 (en) 2005-11-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150809