GB9519835D0 - Improvements in or relating to rotary drills bits - Google Patents

Improvements in or relating to rotary drills bits

Info

Publication number
GB9519835D0
GB9519835D0 GBGB9519835.4A GB9519835A GB9519835D0 GB 9519835 D0 GB9519835 D0 GB 9519835D0 GB 9519835 A GB9519835 A GB 9519835A GB 9519835 D0 GB9519835 D0 GB 9519835D0
Authority
GB
United Kingdom
Prior art keywords
relating
rotary drills
drills bits
bits
rotary
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
GBGB9519835.4A
Other versions
GB2294069B (en
GB2294069A (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
Priority claimed from GB9420839A external-priority patent/GB9420839D0/en
Priority claimed from GBGB9505923.4A external-priority patent/GB9505923D0/en
Application filed by Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Priority to GB9519835A priority Critical patent/GB2294069B/en
Publication of GB9519835D0 publication Critical patent/GB9519835D0/en
Publication of GB2294069A publication Critical patent/GB2294069A/en
Application granted granted Critical
Publication of GB2294069B publication Critical patent/GB2294069B/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
    • E21B10/5673—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a non planar or non circular cutting face
    • 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
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
    • 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
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
GB9519835A 1994-10-15 1995-09-29 Improvements in or relating to rotary drills bits Expired - Fee Related GB2294069B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9519835A GB2294069B (en) 1994-10-15 1995-09-29 Improvements in or relating to rotary drills bits

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9420839A GB9420839D0 (en) 1994-10-15 1994-10-15 Improvements in or relating to rotary drill bits
GBGB9505923.4A GB9505923D0 (en) 1995-03-23 1995-03-23 Improvements in or relating to rotary drill bits
GB9519835A GB2294069B (en) 1994-10-15 1995-09-29 Improvements in or relating to rotary drills bits

Publications (3)

Publication Number Publication Date
GB9519835D0 true GB9519835D0 (en) 1995-11-29
GB2294069A GB2294069A (en) 1996-04-17
GB2294069B GB2294069B (en) 1998-10-28

Family

ID=27267433

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9519835A Expired - Fee Related GB2294069B (en) 1994-10-15 1995-09-29 Improvements in or relating to rotary drills bits

Country Status (1)

Country Link
GB (1) GB2294069B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300437B (en) * 1995-05-02 1998-07-22 Camco Drilling Group Ltd Improvements in or relating to cutting elements for rotary drill bits
GB9508892D0 (en) * 1995-05-02 1995-06-21 Camco Drilling Group Ltd Improvements in or relating to cutting elements for rotary drill bits
US5752573A (en) * 1996-08-12 1998-05-19 Baker Hughes Incorporated Earth-boring bit having shear-cutting elements
GB9621217D0 (en) * 1996-10-11 1996-11-27 Camco Drilling Group Ltd Improvements in or relating to preform cutting elements for rotary drill bits
US5881830A (en) * 1997-02-14 1999-03-16 Baker Hughes Incorporated Superabrasive drill bit cutting element with buttress-supported planar chamfer
GB0102160D0 (en) 2001-01-27 2001-03-14 Schlumberger Holdings Cutting structure for earth boring drill bits
US6484825B2 (en) 2001-01-27 2002-11-26 Camco International (Uk) Limited Cutting structure for earth boring drill bits
CN108798529A (en) * 2017-04-28 2018-11-13 中石化石油工程技术服务有限公司 A kind of PDC drill bit suitable for stiff plastic stratum
CN111720061B (en) * 2019-03-19 2022-06-03 中国石油化工股份有限公司 Non-planar cutting tooth, fixed tooth drill bit and method of making same

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640355A (en) * 1970-06-04 1972-02-08 Maurice P Lebourg Drill bit
US3635296A (en) * 1970-06-04 1972-01-18 Maurice P Lebourg Drill bit construction
DE2719330C3 (en) * 1977-04-30 1984-01-05 Christensen, Inc., 84115 Salt Lake City, Utah Rotary drill bit
GB2060735B (en) * 1979-10-16 1983-06-22 Christensen Inc Diamond drill bits for drilling bore holes in earth formations
ZA806249B (en) * 1979-11-19 1982-01-27 Gen Electric Compacts for diamond drill and saw applications
US4586574A (en) * 1983-05-20 1986-05-06 Norton Christensen, Inc. Cutter configuration for a gage-to-shoulder transition and face pattern
GB8418481D0 (en) * 1984-07-19 1984-08-22 Nl Petroleum Prod Rotary drill bits
US4819516A (en) * 1988-01-07 1989-04-11 Diamant Boart-Stratabit (Usa) Inc. Method of forming a cutting element having a V-shaped diamond cutting face
US4932484A (en) * 1989-04-10 1990-06-12 Amoco Corporation Whirl resistant bit
GB8926688D0 (en) * 1989-11-25 1990-01-17 Reed Tool Co Improvements in or relating to rotary drill bits
US5199511A (en) * 1991-09-16 1993-04-06 Baker-Hughes, Incorporated Drill bit and method for reducing formation fluid invasion and for improved drilling in plastic formations
US5282513A (en) * 1992-02-04 1994-02-01 Smith International, Inc. Thermally stable polycrystalline diamond drill bit
GB2273946B (en) * 1992-12-31 1996-10-09 Camco Drilling Group Ltd Improvements in or relating to rotary drill bits
US5549171A (en) * 1994-08-10 1996-08-27 Smith International, Inc. Drill bit with performance-improving cutting structure

Also Published As

Publication number Publication date
GB2294069B (en) 1998-10-28
GB2294069A (en) 1996-04-17

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Legal Events

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

Effective date: 20060929