NO910866L - Borkrone. - Google Patents

Borkrone.

Info

Publication number
NO910866L
NO910866L NO91910866A NO910866A NO910866L NO 910866 L NO910866 L NO 910866L NO 91910866 A NO91910866 A NO 91910866A NO 910866 A NO910866 A NO 910866A NO 910866 L NO910866 L NO 910866L
Authority
NO
Norway
Prior art keywords
bit
Prior art date
Application number
NO91910866A
Other languages
English (en)
Other versions
NO910866D0 (no
Inventor
Jacob Chow
Ralph M Horton
Mark L Jones
Original Assignee
Norton 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
Application filed by Norton Co filed Critical Norton Co
Publication of NO910866D0 publication Critical patent/NO910866D0/no
Publication of NO910866L publication Critical patent/NO910866L/no

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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • E21B10/485—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type with inserts in form of chisels, blades or the like

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)
NO91910866A 1990-03-06 1991-03-05 Borkrone. NO910866L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49004190A 1990-03-06 1990-03-06

Publications (2)

Publication Number Publication Date
NO910866D0 NO910866D0 (no) 1991-03-05
NO910866L true NO910866L (no) 1991-09-09

Family

ID=23946370

Family Applications (1)

Application Number Title Priority Date Filing Date
NO91910866A NO910866L (no) 1990-03-06 1991-03-05 Borkrone.

Country Status (5)

Country Link
EP (1) EP0446765B1 (no)
AU (1) AU640749B2 (no)
CA (1) CA2037480A1 (no)
DE (1) DE69109160T2 (no)
NO (1) NO910866L (no)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US7690442B2 (en) 2005-05-17 2010-04-06 Smith International, Inc. Drill bit and cutting inserts for hard/abrasive formations
US7757789B2 (en) 2005-06-21 2010-07-20 Smith International, Inc. Drill bit and insert having bladed interface between substrate and coating
US7743855B2 (en) 2006-09-05 2010-06-29 Smith International, Inc. Drill bit with cutter element having multifaceted, slanted top cutting surface
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
US8205692B2 (en) 2007-01-03 2012-06-26 Smith International, Inc. Rock bit and inserts with a chisel crest having a broadened region
US7798258B2 (en) 2007-01-03 2010-09-21 Smith International, Inc. Drill bit with cutter element having crossing chisel crests
US8607899B2 (en) 2011-02-18 2013-12-17 National Oilwell Varco, L.P. Rock bit and cutter teeth geometries
US20140182947A1 (en) 2012-12-28 2014-07-03 Smith International, Inc. Cutting insert for percussion drill bit
US20150259985A1 (en) * 2014-03-11 2015-09-17 Varel International Ind., L.P. Short matrix drill bits and methodologies for manufacturing short matrix drill bits
WO2017123562A1 (en) 2016-01-13 2017-07-20 Schlumberger Technology Corporation Angled chisel insert

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233851B1 (en) * 1986-02-19 1990-11-28 Strata Bit Corporation Cutting element comprising a composite brazed to a stud

Also Published As

Publication number Publication date
AU640749B2 (en) 1993-09-02
AU7261791A (en) 1991-09-12
CA2037480A1 (en) 1991-09-07
EP0446765B1 (en) 1995-04-26
DE69109160D1 (de) 1995-06-01
EP0446765A1 (en) 1991-09-18
DE69109160T2 (de) 1995-08-31
NO910866D0 (no) 1991-03-05

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