CA2447747A1 - Cutting element having enhanced cutting geometry - Google Patents

Cutting element having enhanced cutting geometry Download PDF

Info

Publication number
CA2447747A1
CA2447747A1 CA002447747A CA2447747A CA2447747A1 CA 2447747 A1 CA2447747 A1 CA 2447747A1 CA 002447747 A CA002447747 A CA 002447747A CA 2447747 A CA2447747 A CA 2447747A CA 2447747 A1 CA2447747 A1 CA 2447747A1
Authority
CA
Canada
Prior art keywords
area
cutting
area defining
bit body
enhanced
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
CA002447747A
Other languages
French (fr)
Other versions
CA2447747C (en
Inventor
Lance T. Richman
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 CA2447747A1 publication Critical patent/CA2447747A1/en
Application granted granted Critical
Publication of CA2447747C publication Critical patent/CA2447747C/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
    • E21B10/5676—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a cutting face with different segments, e.g. mosaic-type inserts

Abstract

A drill bit that includes a bit body, at least one roller cone attached to the bit body and able to rotate with respect to the bit body, and a plurality of cutting elements disposed on the at least one roller cone is disclosed. At least one of the plurality of cutting elements includes a first area defining a trailing edge, and a second area proximate the first area defining a main wear surface.. Further, an insert for a drill bit that includes a contact portion adapted to contact an earth formation, the contact portion including a first area defining a relieved trailing edge, and a second area defining a main wear surface, wherein a surface of the second area is a curved surface having a radius of curvature substantially equal to a radius of a borehole is also disclosed.
CA002447747A 2002-11-04 2003-11-03 Cutting element having enhanced cutting geometry Expired - Fee Related CA2447747C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US42356102P 2002-11-04 2002-11-04
US60/423,561 2002-11-04
US10/636,301 2003-08-06
US10/636,301 US7086488B2 (en) 2002-11-04 2003-08-06 Cutting element having enhanced cutting geometry

Publications (2)

Publication Number Publication Date
CA2447747A1 true CA2447747A1 (en) 2004-05-04
CA2447747C CA2447747C (en) 2007-03-27

Family

ID=34078950

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002447747A Expired - Fee Related CA2447747C (en) 2002-11-04 2003-11-03 Cutting element having enhanced cutting geometry

Country Status (4)

Country Link
US (1) US7086488B2 (en)
AU (1) AU2003259639B2 (en)
CA (1) CA2447747C (en)
ZA (1) ZA200308461B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7540340B2 (en) * 2002-11-04 2009-06-02 Smith International, Inc. Cutting element having enhanced cutting geometry
US6923276B2 (en) * 2003-02-19 2005-08-02 Baker Hughes Incorporated Streamlined mill-toothed cone for earth boring bit
US20040231894A1 (en) * 2003-05-21 2004-11-25 Dvorachek Harold A Rotary tools or bits
US7743855B2 (en) * 2006-09-05 2010-06-29 Smith International, Inc. Drill bit with cutter element having multifaceted, slanted top cutting surface
US8016059B2 (en) * 2007-02-09 2011-09-13 Smith International, Inc. Gage insert
US7681673B2 (en) * 2007-06-12 2010-03-23 Smith International, Inc. Drill bit and cutting element having multiple cutting edges
US9212523B2 (en) * 2011-12-01 2015-12-15 Smith International, Inc. Drill bit having geometrically sharp inserts
USD924949S1 (en) 2019-01-11 2021-07-13 Us Synthetic Corporation Cutting tool

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058177A (en) * 1976-03-29 1977-11-15 Dresser Industries, Inc. Asymmetric gage insert for an earth boring apparatus
US4343371A (en) * 1980-04-28 1982-08-10 Smith International, Inc. Hybrid rock bit
US4334586A (en) * 1980-06-05 1982-06-15 Reed Rock Bit Company Inserts for drilling bits
US4811801A (en) * 1988-03-16 1989-03-14 Smith International, Inc. Rock bits and inserts therefor
US5172777A (en) * 1991-09-26 1992-12-22 Smith International, Inc. Inclined chisel inserts for rock bits
SE507098C2 (en) * 1994-10-12 1998-03-30 Sandvik Ab Carbide pin and rock drill bit for striking drilling
US5636700A (en) * 1995-01-03 1997-06-10 Dresser Industries, Inc. Roller cone rock bit having improved cutter gauge face surface compacts and a method of construction
CA2244457C (en) * 1997-08-05 2007-02-20 Smith International, Inc. Drill bit with ridge cutting cutter elements
GB2365902B (en) * 1997-08-05 2002-04-17 Smith International Drill bit with ridge-cutting cutter element(s)
SE513015C2 (en) * 1997-11-19 2000-06-19 Sandvik Ab Drill bit and rock drill bit for rock drilling
US6199645B1 (en) * 1998-02-13 2001-03-13 Smith International, Inc. Engineered enhanced inserts for rock drilling bits
US6290008B1 (en) * 1998-12-07 2001-09-18 Smith International, Inc. Inserts for earth-boring bits
US6227318B1 (en) * 1998-12-07 2001-05-08 Smith International, Inc. Superhard material enhanced inserts for earth-boring bits
US6604588B2 (en) * 2001-09-28 2003-08-12 Smith International, Inc. Gage trimmers and bit incorporating the same

Also Published As

Publication number Publication date
US7086488B2 (en) 2006-08-08
CA2447747C (en) 2007-03-27
AU2003259639B2 (en) 2005-08-25
ZA200308461B (en) 2004-06-15
AU2003259639A1 (en) 2004-05-20
US20040084223A1 (en) 2004-05-06

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20141103