EP0350045A3 - Drill bit with composite cutting members - Google Patents

Drill bit with composite cutting members Download PDF

Info

Publication number
EP0350045A3
EP0350045A3 EP89112388A EP89112388A EP0350045A3 EP 0350045 A3 EP0350045 A3 EP 0350045A3 EP 89112388 A EP89112388 A EP 89112388A EP 89112388 A EP89112388 A EP 89112388A EP 0350045 A3 EP0350045 A3 EP 0350045A3
Authority
EP
European Patent Office
Prior art keywords
drill bit
cutting members
composite cutting
composite
members
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
EP89112388A
Other versions
EP0350045A2 (en
EP0350045B1 (en
Inventor
Rainer Dr. Jurgens
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.)
Eastman Teleco Co
Original Assignee
Eastman Teleco Co
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 to US21549988A priority Critical
Priority to US215499 priority
Application filed by Eastman Teleco Co filed Critical Eastman Teleco Co
Publication of EP0350045A2 publication Critical patent/EP0350045A2/en
Publication of EP0350045A3 publication Critical patent/EP0350045A3/en
Application granted granted Critical
Publication of EP0350045B1 publication Critical patent/EP0350045B1/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/46Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56Button type inserts
    • E21B10/567Button type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/5676Button 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
EP19890112388 1988-07-06 1989-07-06 Drill bit with composite cutting members Expired - Lifetime EP0350045B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US21549988A true 1988-07-06 1988-07-06
US215499 1988-07-06

Publications (3)

Publication Number Publication Date
EP0350045A2 EP0350045A2 (en) 1990-01-10
EP0350045A3 true EP0350045A3 (en) 1990-06-06
EP0350045B1 EP0350045B1 (en) 1996-01-17

Family

ID=22803218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890112388 Expired - Lifetime EP0350045B1 (en) 1988-07-06 1989-07-06 Drill bit with composite cutting members

Country Status (3)

Country Link
EP (1) EP0350045B1 (en)
CA (1) CA1311745C (en)
DE (2) DE68925439T2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5238074A (en) * 1992-01-06 1993-08-24 Baker Hughes Incorporated Mosaic diamond drag bit cutter having a nonuniform wear pattern
ZA9305525B (en) * 1992-08-06 1994-02-24 De Beers Ind Diamond Tool insert
GB9827600D0 (en) * 1998-12-15 1999-02-10 De Beers Ind Diamond Abrasive product
US6248447B1 (en) 1999-09-03 2001-06-19 Camco International (Uk) Limited Cutting elements and methods of manufacture thereof
US8991525B2 (en) * 2012-05-01 2015-03-31 Baker Hughes Incorporated Earth-boring tools having cutting elements with cutting faces exhibiting multiple coefficients of friction, and related methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498549A (en) * 1981-03-21 1985-02-12 Norton Christensen, Inc. Cutting member for rotary drill bit
EP0157278A2 (en) * 1984-03-26 1985-10-09 Eastman Christensen Company Multi-component cutting element using polycrystalline diamond disks
EP0246789A2 (en) * 1986-05-16 1987-11-25 Nl Petroleum Products Limited Cutter for a rotary drill bit, rotary drill bit with such a cutter, and method of manufacturing such a cutter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498549A (en) * 1981-03-21 1985-02-12 Norton Christensen, Inc. Cutting member for rotary drill bit
EP0157278A2 (en) * 1984-03-26 1985-10-09 Eastman Christensen Company Multi-component cutting element using polycrystalline diamond disks
EP0246789A2 (en) * 1986-05-16 1987-11-25 Nl Petroleum Products Limited Cutter for a rotary drill bit, rotary drill bit with such a cutter, and method of manufacturing such a cutter

Also Published As

Publication number Publication date
DE68925439T2 (en) 1996-08-22
EP0350045A2 (en) 1990-01-10
CA1311745C (en) 1992-12-22
EP0350045B1 (en) 1996-01-17
DE68925439D1 (en) 1996-02-29

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