GB9227135D0 - Improvements in or relating to rotary drill bits - Google Patents

Improvements in or relating to rotary drill bits

Info

Publication number
GB9227135D0
GB9227135D0 GB929227135A GB9227135A GB9227135D0 GB 9227135 D0 GB9227135 D0 GB 9227135D0 GB 929227135 A GB929227135 A GB 929227135A GB 9227135 A GB9227135 A GB 9227135A GB 9227135 D0 GB9227135 D0 GB 9227135D0
Authority
GB
United Kingdom
Prior art keywords
relating
drill bits
rotary drill
rotary
bits
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
GB929227135A
Other versions
GB2273946A (en
GB2273946B (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.)
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
Application filed by Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Priority to GB9227135A priority Critical patent/GB2273946B/en
Publication of GB9227135D0 publication Critical patent/GB9227135D0/en
Priority to EP93310193A priority patent/EP0605151A1/en
Publication of GB2273946A publication Critical patent/GB2273946A/en
Application granted granted Critical
Publication of GB2273946B publication Critical patent/GB2273946B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
GB9227135A 1992-12-31 1992-12-31 Improvements in or relating to rotary drill bits Expired - Fee Related GB2273946B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9227135A GB2273946B (en) 1992-12-31 1992-12-31 Improvements in or relating to rotary drill bits
EP93310193A EP0605151A1 (en) 1992-12-31 1993-12-16 Rotary drill bit with stabilizing elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9227135A GB2273946B (en) 1992-12-31 1992-12-31 Improvements in or relating to rotary drill bits

Publications (3)

Publication Number Publication Date
GB9227135D0 true GB9227135D0 (en) 1993-02-24
GB2273946A GB2273946A (en) 1994-07-06
GB2273946B GB2273946B (en) 1996-10-09

Family

ID=10727347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9227135A Expired - Fee Related GB2273946B (en) 1992-12-31 1992-12-31 Improvements in or relating to rotary drill bits

Country Status (2)

Country Link
EP (1) EP0605151A1 (en)
GB (1) GB2273946B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505273A (en) * 1994-01-24 1996-04-09 Smith International, Inc. Compound diamond cutter
EP0707130B1 (en) * 1994-10-15 2003-07-16 Camco Drilling Group Limited Rotary drill bits
GB2294069B (en) * 1994-10-15 1998-10-28 Camco Drilling Group Ltd Improvements in or relating to rotary drills bits
US5992548A (en) * 1995-08-15 1999-11-30 Diamond Products International, Inc. Bi-center bit with oppositely disposed cutting surfaces
US6298930B1 (en) * 1999-08-26 2001-10-09 Baker Hughes Incorporated Drill bits with controlled cutter loading and depth of cut
US6460631B2 (en) 1999-08-26 2002-10-08 Baker Hughes Incorporated Drill bits with reduced exposure of cutters
US6568492B2 (en) 2001-03-02 2003-05-27 Varel International, Inc. Drag-type casing mill/drill bit
US6659199B2 (en) 2001-08-13 2003-12-09 Baker Hughes Incorporated Bearing elements for drill bits, drill bits so equipped, and method of drilling
US7360608B2 (en) 2004-09-09 2008-04-22 Baker Hughes Incorporated Rotary drill bits including at least one substantially helically extending feature and methods of operation
US8141665B2 (en) 2005-12-14 2012-03-27 Baker Hughes Incorporated Drill bits with bearing elements for reducing exposure of cutters
US7814997B2 (en) 2007-06-14 2010-10-19 Baker Hughes Incorporated Interchangeable bearing blocks for drill bits, and drill bits including same
US8943663B2 (en) 2009-04-15 2015-02-03 Baker Hughes Incorporated Methods of forming and repairing cutting element pockets in earth-boring tools with depth-of-cut control features, and tools and structures formed by such methods
WO2011044147A2 (en) 2009-10-05 2011-04-14 Baker Hughes Incorporated Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of directional and off center drilling

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8418481D0 (en) * 1984-07-19 1984-08-22 Nl Petroleum Prod Rotary drill bits
GB8711255D0 (en) * 1987-05-13 1987-06-17 Nl Petroleum Prod Rotary drill bits
US4981184A (en) * 1988-11-21 1991-01-01 Smith International, Inc. Diamond drag bit for soft formations
US5090492A (en) * 1991-02-12 1992-02-25 Dresser Industries, Inc. Drill bit with vibration stabilizers
US5265685A (en) * 1991-12-30 1993-11-30 Dresser Industries, Inc. Drill bit with improved insert cutter pattern

Also Published As

Publication number Publication date
GB2273946A (en) 1994-07-06
EP0605151A1 (en) 1994-07-06
GB2273946B (en) 1996-10-09

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Legal Events

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

Effective date: 19971231