CA2693265A1 - Drill bit having diamond impregnated inserts primary cutting structure - Google Patents

Drill bit having diamond impregnated inserts primary cutting structure Download PDF

Info

Publication number
CA2693265A1
CA2693265A1 CA2693265A CA2693265A CA2693265A1 CA 2693265 A1 CA2693265 A1 CA 2693265A1 CA 2693265 A CA2693265 A CA 2693265A CA 2693265 A CA2693265 A CA 2693265A CA 2693265 A1 CA2693265 A1 CA 2693265A1
Authority
CA
Canada
Prior art keywords
diamond
bit
impregnated
bit body
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.)
Granted
Application number
CA2693265A
Other languages
French (fr)
Other versions
CA2693265C (en
Inventor
David K. Traux
Thomas Walter Oldham
Duane R. Van Waes
Carl Edward Penuel
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.
David K. Traux
Thomas Walter Oldham
Duane R. Van Waes
Carl Edward Penuel
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., David K. Traux, Thomas Walter Oldham, Duane R. Van Waes, Carl Edward Penuel filed Critical Smith International, Inc.
Priority claimed from CA2584928A external-priority patent/CA2584928C/en
Publication of CA2693265A1 publication Critical patent/CA2693265A1/en
Application granted granted Critical
Publication of CA2693265C publication Critical patent/CA2693265C/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
    • E21B10/42—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware

Abstract

An earth-boring bit comprises a bit body bit body in which are mounted a plurality of cutting structures inserts, wherein at least a portion of the cutting structures comprise diamond--impregnated inserts having a total thermal exposure of less than 25 minutes above 1500°F. The diamonds can be natural or synthetic diamond. The bit body itself may be diamond-impregnated, in which case it is preferred that the diamonds in the inserts make up at least 40% of the total diamond in the bit.

Claims (7)

1. A method for forming a bit having a diamond-impregnated cutting structure, comprising:
(a) forming a plurality of diamond-impregnated inserts comprising diamond particles in a matrix;
(b) forming an infiltrated tungsten carbide bit body and including in the formed bit body a plurality of sockets sized to receive the inserts; and (c) mounting the inserts in the bit body and affixing the inserts to the bit body, wherein the bit body comprises an infiltrated diamond-impregnated tungsten carbide matrix.
2. The bit according to claim 1, wherein at least one said diamond-impregnated insert includes a thermally stable polycrystalline diamond material.
3. The bit according to claim 1, wherein at least one said diamond-impregnated insert includes a mix of natural and synthetic diamonds.
4. The bit according to claim 1, wherein at least one said diamond-impregnated insert extends outward beyond the surface of the bit body.
5. The bit according to claim 4, wherein at least one said diamond-impregnated insert is not perpendicular to the outer surface of the bit body at the point where said inset is mounted.
6. The bit according to claim 4, wherein at least two said diamond-impregnated inserts extend outward beyond the surface of the bit body and the diamond-impregnated inserts that extend beyond the surface of the bit body vary in length.
7. The bit according to claim 4, further including at least one secondary cutting structure mounted on said blade.
CA2693265A 1999-06-30 2000-06-08 Drill bit having diamond impregnated inserts primary cutting structure Expired - Lifetime CA2693265C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/343,968 US6394202B2 (en) 1999-06-30 1999-06-30 Drill bit having diamond impregnated inserts primary cutting structure
US09/343,968 1999-06-30
CA2584928A CA2584928C (en) 1999-06-30 2000-06-08 Drill bit having diamond impregnated inserts primary cutting structure

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2584928A Division CA2584928C (en) 1999-06-30 2000-06-08 Drill bit having diamond impregnated inserts primary cutting structure

Publications (2)

Publication Number Publication Date
CA2693265A1 true CA2693265A1 (en) 2000-12-30
CA2693265C CA2693265C (en) 2012-03-20

Family

ID=23348450

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002311020A Expired - Lifetime CA2311020C (en) 1999-06-30 2000-06-08 Drill bit having diamond impregnated inserts primary cutting structure
CA2693265A Expired - Lifetime CA2693265C (en) 1999-06-30 2000-06-08 Drill bit having diamond impregnated inserts primary cutting structure

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002311020A Expired - Lifetime CA2311020C (en) 1999-06-30 2000-06-08 Drill bit having diamond impregnated inserts primary cutting structure

Country Status (4)

Country Link
US (2) US6394202B2 (en)
CA (2) CA2311020C (en)
DE (1) DE10031833C2 (en)
GB (1) GB2353053B (en)

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Also Published As

Publication number Publication date
US6394202B2 (en) 2002-05-28
DE10031833C2 (en) 2002-11-21
GB2353053B (en) 2003-10-15
US20010047891A1 (en) 2001-12-06
US6725953B2 (en) 2004-04-27
GB0016244D0 (en) 2000-08-23
US20020125048A1 (en) 2002-09-12
DE10031833A1 (en) 2001-01-11
CA2311020C (en) 2007-11-06
GB2353053A (en) 2001-02-14
CA2311020A1 (en) 2000-12-30
CA2693265C (en) 2012-03-20

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Effective date: 20200608