GB2203470B - Drill bits - Google Patents

Drill bits

Info

Publication number
GB2203470B
GB2203470B GB8808453A GB8808453A GB2203470B GB 2203470 B GB2203470 B GB 2203470B GB 8808453 A GB8808453 A GB 8808453A GB 8808453 A GB8808453 A GB 8808453A GB 2203470 B GB2203470 B GB 2203470B
Authority
GB
United Kingdom
Prior art keywords
drill bits
drill
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.)
Expired - Fee Related
Application number
GB8808453A
Other versions
GB2203470A (en
GB8808453D0 (en
Inventor
Chris Cawthorne
Van Nguyen
Gerard Erpenbeck
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
Application filed by Smith International Inc filed Critical Smith International Inc
Publication of GB8808453D0 publication Critical patent/GB8808453D0/en
Publication of GB2203470A publication Critical patent/GB2203470A/en
Application granted granted Critical
Publication of GB2203470B publication Critical patent/GB2203470B/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1092—Gauge section of drill bits
    • 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
    • E21B10/08—Roller bits
    • 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
    • E21B10/08—Roller bits
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
GB8808453A 1987-04-10 1988-04-11 Drill bits Expired - Fee Related GB2203470B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3662587A 1987-04-10 1987-04-10

Publications (3)

Publication Number Publication Date
GB8808453D0 GB8808453D0 (en) 1988-05-11
GB2203470A GB2203470A (en) 1988-10-19
GB2203470B true GB2203470B (en) 1991-09-18

Family

ID=21889672

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8808453A Expired - Fee Related GB2203470B (en) 1987-04-10 1988-04-11 Drill bits

Country Status (7)

Country Link
BE (1) BE1002144A5 (en)
CA (1) CA1335988C (en)
DE (1) DE3811370A1 (en)
FR (1) FR2613764B3 (en)
GB (1) GB2203470B (en)
MX (1) MX167812B (en)
NL (1) NL8800897A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5494123A (en) * 1994-10-04 1996-02-27 Smith International, Inc. Drill bit with protruding insert stabilizers
US5755299A (en) * 1995-08-03 1998-05-26 Dresser Industries, Inc. Hardfacing with coated diamond particles
US9574405B2 (en) 2005-09-21 2017-02-21 Smith International, Inc. Hybrid disc bit with optimized PDC cutter placement
US8672060B2 (en) 2009-07-31 2014-03-18 Smith International, Inc. High shear roller cone drill bits
US8955413B2 (en) 2009-07-31 2015-02-17 Smith International, Inc. Manufacturing methods for high shear roller cone bits
RU2725712C1 (en) * 2019-07-22 2020-07-03 Дмитрий Юрьевич Сериков Calibrator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005492A1 (en) * 1987-01-15 1988-07-28 Wood Roy W Rotary drill bit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628616A (en) * 1969-12-18 1971-12-21 Smith International Drilling bit with integral stabilizer
US4068731A (en) * 1976-11-17 1978-01-17 Smith International, Inc. Extended nozzle and bit stabilizer and method of producing
US4140189A (en) * 1977-06-06 1979-02-20 Smith International, Inc. Rock bit with diamond reamer to maintain gage
DE2934471A1 (en) * 1979-08-25 1981-03-26 Smith International, Inc. (n.d. Ges. d. Staates Delaware), Newport Beach, Calif. Rock drill for geothermal shafts - where cutters contain peripheral row of very hard tungsten carbide inserts to improve drill life in arduous working conditions

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005492A1 (en) * 1987-01-15 1988-07-28 Wood Roy W Rotary drill bit

Also Published As

Publication number Publication date
FR2613764A1 (en) 1988-10-14
FR2613764B3 (en) 1989-10-27
NL8800897A (en) 1988-11-01
BE1002144A5 (en) 1990-07-31
GB2203470A (en) 1988-10-19
MX167812B (en) 1993-04-13
DE3811370A1 (en) 1988-10-27
GB8808453D0 (en) 1988-05-11
CA1335988C (en) 1995-06-20

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Legal Events

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

Effective date: 20060411