EP1191000A3 - Rotary drill bit - Google Patents

Rotary drill bit Download PDF

Info

Publication number
EP1191000A3
EP1191000A3 EP01307636A EP01307636A EP1191000A3 EP 1191000 A3 EP1191000 A3 EP 1191000A3 EP 01307636 A EP01307636 A EP 01307636A EP 01307636 A EP01307636 A EP 01307636A EP 1191000 A3 EP1191000 A3 EP 1191000A3
Authority
EP
European Patent Office
Prior art keywords
drill bit
cutters
rotary drill
rings
different
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
EP01307636A
Other languages
German (de)
French (fr)
Other versions
EP1191000A2 (en
EP1191000B1 (en
Inventor
Peter Raymond Hughes
Nigel Dennis Griffin
Terry R. Matthias
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.)
ReedHycalog UK Ltd
Original Assignee
Camco International UK 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
Application filed by Camco International UK Ltd filed Critical Camco International UK Ltd
Priority to EP01307636A priority Critical patent/EP1191000B1/en
Priority to DE60103711T priority patent/DE60103711T2/en
Publication of EP1191000A2 publication Critical patent/EP1191000A2/en
Publication of EP1191000A3 publication Critical patent/EP1191000A3/en
Application granted granted Critical
Publication of EP1191000B1 publication Critical patent/EP1191000B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/006—Drill bits providing a cutting edge which is self-renewable during drilling
    • 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
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)

Abstract

A rotary drill bit includes cutters arranged in a series of concentric rings, the cutters of one of the rings having a different wear resistance to the cutters of another of the rings with the result that the stability of the drill bit improves with wear. Although the wear resistance is different, the cutters have substantially the same impact toughness.
EP01307636A 2000-09-20 2001-09-07 Rotary drill bit Expired - Lifetime EP1191000B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01307636A EP1191000B1 (en) 2000-09-20 2001-09-07 Rotary drill bit
DE60103711T DE60103711T2 (en) 2000-09-20 2001-09-07 Rotary drill bit

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US23407500P 2000-09-20 2000-09-20
US234075P 2000-09-20
US28105401P 2001-04-02 2001-04-02
US281054P 2001-04-02
EP01307636A EP1191000B1 (en) 2000-09-20 2001-09-07 Rotary drill bit

Publications (3)

Publication Number Publication Date
EP1191000A2 EP1191000A2 (en) 2002-03-27
EP1191000A3 true EP1191000A3 (en) 2002-04-03
EP1191000B1 EP1191000B1 (en) 2004-06-09

Family

ID=43030548

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01307636A Expired - Lifetime EP1191000B1 (en) 2000-09-20 2001-09-07 Rotary drill bit

Country Status (2)

Country Link
EP (1) EP1191000B1 (en)
DE (1) DE60103711T2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546725A1 (en) * 1991-11-30 1993-06-16 Camco Drilling Group Limited Improvents in or relating to cutting elements for rotary drill bits
WO2000028106A1 (en) * 1998-11-10 2000-05-18 Kennametal Inc. Polycrystalline diamond member and method of making the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546725A1 (en) * 1991-11-30 1993-06-16 Camco Drilling Group Limited Improvents in or relating to cutting elements for rotary drill bits
WO2000028106A1 (en) * 1998-11-10 2000-05-18 Kennametal Inc. Polycrystalline diamond member and method of making the same

Also Published As

Publication number Publication date
EP1191000A2 (en) 2002-03-27
DE60103711T2 (en) 2005-06-30
EP1191000B1 (en) 2004-06-09
DE60103711D1 (en) 2004-07-15

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