GB2395971B - Maintaining relative pressure between roller cone lubricant and drilling fluids - Google Patents

Maintaining relative pressure between roller cone lubricant and drilling fluids

Info

Publication number
GB2395971B
GB2395971B GB0404411A GB0404411A GB2395971B GB 2395971 B GB2395971 B GB 2395971B GB 0404411 A GB0404411 A GB 0404411A GB 0404411 A GB0404411 A GB 0404411A GB 2395971 B GB2395971 B GB 2395971B
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
lubricant
relative
fluids
pressure
drilling
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 - Fee Related
Application number
GB0404411A
Other versions
GB2395971A (en )
GB0404411D0 (en )
Inventor
David Patrick Moran
Gary Ray Portwood
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.)
Smith International Inc
Original Assignee
Smith International 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
Grant date

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/08Roller bits
    • E21B10/22Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/24Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B12/00Accessories for drilling tools
    • E21B12/02Wear indicators
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/10Locating fluid leaks, intrusions or movements
    • E21B47/1025Detecting leaks, e.g. of tubing, by pressure testing
GB0404411A 2001-10-01 2002-09-25 Maintaining relative pressure between roller cone lubricant and drilling fluids Expired - Fee Related GB2395971B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US32624201 true 2001-10-01 2001-10-01
US10079919 US6698536B2 (en) 2001-10-01 2002-02-20 Roller cone drill bit having lubrication contamination detector and lubrication positive pressure maintenance system
GB0222266A GB2380212B (en) 2001-10-01 2002-09-25 Roller cone drill bit having a lubrication contamination detector

Publications (3)

Publication Number Publication Date
GB0404411D0 GB0404411D0 (en) 2004-03-31
GB2395971A true GB2395971A (en) 2004-06-09
GB2395971B true GB2395971B (en) 2004-09-08

Family

ID=32302996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0404411A Expired - Fee Related GB2395971B (en) 2001-10-01 2002-09-25 Maintaining relative pressure between roller cone lubricant and drilling fluids

Country Status (1)

Country Link
GB (1) GB2395971B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8100196B2 (en) 2005-06-07 2012-01-24 Baker Hughes Incorporated Method and apparatus for collecting drill bit performance data

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7849934B2 (en) * 2005-06-07 2010-12-14 Baker Hughes Incorporated Method and apparatus for collecting drill bit performance data
US7604072B2 (en) * 2005-06-07 2009-10-20 Baker Hughes Incorporated Method and apparatus for collecting drill bit performance data
US8376065B2 (en) 2005-06-07 2013-02-19 Baker Hughes Incorporated Monitoring drilling performance in a sub-based unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6230822B1 (en) * 1995-02-16 2001-05-15 Baker Hughes Incorporated Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations
GB2368360A (en) * 2000-10-27 2002-05-01 Baker Hughes Inc System for monitoring a roller cone drill bit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6230822B1 (en) * 1995-02-16 2001-05-15 Baker Hughes Incorporated Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations
GB2368360A (en) * 2000-10-27 2002-05-01 Baker Hughes Inc System for monitoring a roller cone drill bit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8100196B2 (en) 2005-06-07 2012-01-24 Baker Hughes Incorporated Method and apparatus for collecting drill bit performance data

Also Published As

Publication number Publication date Type
GB2395971A (en) 2004-06-09 application
GB0404411D0 (en) 2004-03-31 grant

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Legal Events

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

Effective date: 20150925