GB2378465B - Rock bit with load stabilizing cutting structure - Google Patents

Rock bit with load stabilizing cutting structure

Info

Publication number
GB2378465B
GB2378465B GB0225378A GB0225378A GB2378465B GB 2378465 B GB2378465 B GB 2378465B GB 0225378 A GB0225378 A GB 0225378A GB 0225378 A GB0225378 A GB 0225378A GB 2378465 B GB2378465 B GB 2378465B
Authority
GB
United Kingdom
Prior art keywords
cutting structure
rock bit
load stabilizing
stabilizing cutting
load
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
GB0225378A
Other versions
GB2378465A (en
GB0225378D0 (en
Inventor
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
Priority claimed from US09/705,988 external-priority patent/US6561292B1/en
Application filed by Smith International Inc filed Critical Smith International Inc
Publication of GB0225378D0 publication Critical patent/GB0225378D0/en
Publication of GB2378465A publication Critical patent/GB2378465A/en
Application granted granted Critical
Publication of GB2378465B publication Critical patent/GB2378465B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB0225378A 2000-11-03 2001-11-05 Rock bit with load stabilizing cutting structure Expired - Fee Related GB2378465B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/705,988 US6561292B1 (en) 2000-11-03 2000-11-03 Rock bit with load stabilizing cutting structure
GB0126542A GB2368603B (en) 2000-11-03 2001-11-05 Rock bit with load stabilizing cutting structure

Publications (3)

Publication Number Publication Date
GB0225378D0 GB0225378D0 (en) 2002-12-11
GB2378465A GB2378465A (en) 2003-02-12
GB2378465B true GB2378465B (en) 2004-12-22

Family

ID=26246742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0225378A Expired - Fee Related GB2378465B (en) 2000-11-03 2001-11-05 Rock bit with load stabilizing cutting structure

Country Status (1)

Country Link
GB (1) GB2378465B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9074431B2 (en) 2008-01-11 2015-07-07 Smith International, Inc. Rolling cone drill bit having high density cutting elements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056153A (en) * 1975-05-29 1977-11-01 Dresser Industries, Inc. Rotary rock bit with multiple row coverage for very hard formations
US4420050A (en) * 1979-07-30 1983-12-13 Reed Rock Bit Company Oil well drilling bit
US5833020A (en) * 1996-04-10 1998-11-10 Smith International, Inc. Rolling cone bit with enhancements in cutter element placement and materials to optimize borehole corner cutting duty
GB2368601A (en) * 2000-11-02 2002-05-08 Baker Hughes Inc Long barrel inserts for a roller-cone drill bit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056153A (en) * 1975-05-29 1977-11-01 Dresser Industries, Inc. Rotary rock bit with multiple row coverage for very hard formations
US4420050A (en) * 1979-07-30 1983-12-13 Reed Rock Bit Company Oil well drilling bit
US5833020A (en) * 1996-04-10 1998-11-10 Smith International, Inc. Rolling cone bit with enhancements in cutter element placement and materials to optimize borehole corner cutting duty
GB2368601A (en) * 2000-11-02 2002-05-08 Baker Hughes Inc Long barrel inserts for a roller-cone drill bit

Also Published As

Publication number Publication date
GB2378465A (en) 2003-02-12
GB0225378D0 (en) 2002-12-11

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Legal Events

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

Effective date: 20151105