DE69230628D1 - Tungsten carbide inserts for rock drill bits - Google Patents

Tungsten carbide inserts for rock drill bits

Info

Publication number
DE69230628D1
DE69230628D1 DE69230628T DE69230628T DE69230628D1 DE 69230628 D1 DE69230628 D1 DE 69230628D1 DE 69230628 T DE69230628 T DE 69230628T DE 69230628 T DE69230628 T DE 69230628T DE 69230628 D1 DE69230628 D1 DE 69230628D1
Authority
DE
Germany
Prior art keywords
tungsten carbide
drill bits
rock drill
carbide inserts
inserts
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 - Lifetime
Application number
DE69230628T
Other languages
German (de)
Inventor
Michael A Siracki
James C Minikus
Gary R Portwood
Chris E Cawthorne
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 US07/766,882 external-priority patent/US5172777A/en
Priority claimed from US07/798,435 external-priority patent/US5172779A/en
Application filed by Smith International Inc filed Critical Smith International Inc
Application granted granted Critical
Publication of DE69230628D1 publication Critical patent/DE69230628D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B10/50—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
    • 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
DE69230628T 1991-08-14 1992-08-14 Tungsten carbide inserts for rock drill bits Expired - Lifetime DE69230628D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US74477791A 1991-08-14 1991-08-14
US07/766,882 US5172777A (en) 1991-09-26 1991-09-26 Inclined chisel inserts for rock bits
US07/798,435 US5172779A (en) 1991-11-26 1991-11-26 Radial crest insert

Publications (1)

Publication Number Publication Date
DE69230628D1 true DE69230628D1 (en) 2000-03-09

Family

ID=27419314

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69230628T Expired - Lifetime DE69230628D1 (en) 1991-08-14 1992-08-14 Tungsten carbide inserts for rock drill bits

Country Status (2)

Country Link
EP (1) EP0527506B1 (en)
DE (1) DE69230628D1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5421424A (en) * 1994-06-09 1995-06-06 Smith International, Inc. Bowed out chisel insert for rock bits
US6321862B1 (en) * 1997-09-08 2001-11-27 Baker Hughes Incorporated Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability
US6997273B2 (en) 2002-11-15 2006-02-14 Smith International, Inc. Blunt faced cutter element and enhanced drill bit and cutting structure
US6883624B2 (en) 2003-01-31 2005-04-26 Smith International, Inc. Multi-lobed cutter element for drill bit
US6929079B2 (en) 2003-02-21 2005-08-16 Smith International, Inc. Drill bit cutter element having multiple cusps
US7040424B2 (en) 2003-03-04 2006-05-09 Smith International, Inc. Drill bit and cutter having insert clusters and method of manufacture
US7013999B2 (en) 2003-07-28 2006-03-21 Smith International, Inc. Wedge tooth cutter element for drill bit
GB2427633B (en) 2005-05-17 2007-08-15 Smith International Drill bit and method of designing a drill bit
US7757789B2 (en) 2005-06-21 2010-07-20 Smith International, Inc. Drill bit and insert having bladed interface between substrate and coating
CN100359126C (en) * 2005-09-09 2008-01-02 江汉石油钻头股份有限公司 Cutter with convex tooth-tip
US7624825B2 (en) 2005-10-18 2009-12-01 Smith International, Inc. Drill bit and cutter element having aggressive leading side
US7743855B2 (en) 2006-09-05 2010-06-29 Smith International, Inc. Drill bit with cutter element having multifaceted, slanted top cutting surface
US8205692B2 (en) 2007-01-03 2012-06-26 Smith International, Inc. Rock bit and inserts with a chisel crest having a broadened region
US7686106B2 (en) 2007-01-03 2010-03-30 Smith International, Inc. Rock bit and inserts with wear relief grooves
US7631709B2 (en) 2007-01-03 2009-12-15 Smith International, Inc. Drill bit and cutter element having chisel crest with protruding pilot portion
US7798258B2 (en) 2007-01-03 2010-09-21 Smith International, Inc. Drill bit with cutter element having crossing chisel crests
CN101560869B (en) * 2009-05-27 2012-04-04 江汉石油钻头股份有限公司 Convex head deflective wedge tooth
US8607899B2 (en) 2011-02-18 2013-12-17 National Oilwell Varco, L.P. Rock bit and cutter teeth geometries
US20140183798A1 (en) 2012-12-28 2014-07-03 Smith International, Inc. Manufacture of cutting elements having lobes
AU2017207287A1 (en) 2016-01-13 2018-07-12 Schlumberger Technology B.V. Angled chisel insert
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
CN110185397A (en) * 2019-07-11 2019-08-30 西南石油大学 A kind of circular arc-parabola-circular arc tooth structure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3442342A (en) * 1967-07-06 1969-05-06 Hughes Tool Co Specially shaped inserts for compact rock bits,and rolling cutters and rock bits using such inserts
US4058177A (en) * 1976-03-29 1977-11-15 Dresser Industries, Inc. Asymmetric gage insert for an earth boring apparatus
US4086973A (en) * 1976-12-03 1978-05-02 Dresser Industries, Inc. Asymmetric insert for inner row of an earth boring cutter
US4254840A (en) * 1978-10-05 1981-03-10 Reed Tool Company Drill bit insert
US4334586A (en) * 1980-06-05 1982-06-15 Reed Rock Bit Company Inserts for drilling bits
US4940099A (en) * 1989-04-05 1990-07-10 Reed Tool Company Cutting elements for roller cutter drill bits

Also Published As

Publication number Publication date
EP0527506A2 (en) 1993-02-17
EP0527506B1 (en) 2000-02-02
EP0527506A3 (en) 1993-06-16

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Legal Events

Date Code Title Description
8332 No legal effect for de