DE69519625D1 - Drill bits for drilling operations - Google Patents

Drill bits for drilling operations

Info

Publication number
DE69519625D1
DE69519625D1 DE69519625T DE69519625T DE69519625D1 DE 69519625 D1 DE69519625 D1 DE 69519625D1 DE 69519625 T DE69519625 T DE 69519625T DE 69519625 T DE69519625 T DE 69519625T DE 69519625 D1 DE69519625 D1 DE 69519625D1
Authority
DE
Germany
Prior art keywords
drill bits
drilling operations
drilling
drill
bits
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.)
Expired - Lifetime
Application number
DE69519625T
Other languages
German (de)
Inventor
Clifford Ross Gray
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE69519625D1 publication Critical patent/DE69519625D1/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
    • E21B10/08—Roller bits
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids

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)
DE69519625T 1995-03-27 1995-03-27 Drill bits for drilling operations Expired - Lifetime DE69519625D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19950302012 EP0735232B1 (en) 1995-03-27 1995-03-27 Cutter bit for use in drilling operations

Publications (1)

Publication Number Publication Date
DE69519625D1 true DE69519625D1 (en) 2001-01-18

Family

ID=8221146

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69519625T Expired - Lifetime DE69519625D1 (en) 1995-03-27 1995-03-27 Drill bits for drilling operations

Country Status (2)

Country Link
EP (1) EP0735232B1 (en)
DE (1) DE69519625D1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692117A (en) * 1951-11-13 1954-10-19 Reed Roller Bit Co Drill bit
US3070182A (en) * 1961-09-21 1962-12-25 John F Runte Self-cleaning fluid circulating drill bit
US3923109A (en) * 1975-02-24 1975-12-02 Jr Edward B Williams Drill tool
US4022285A (en) * 1976-03-11 1977-05-10 Frank Donald D Drill bit with suction and method of dry drilling with liquid column
US4126194A (en) * 1977-07-11 1978-11-21 Smith International, Inc. Rock bit with extended pickup tube
FR2442954A1 (en) * 1977-11-21 1980-06-27 Inst Francais Du Petrole IMPROVED SUCTION DRILLING TOOL
CA1164855A (en) * 1980-03-24 1984-04-03 Philip A. Taylor Rolling cutter drill bit
US4372399A (en) * 1982-03-11 1983-02-08 Development Oil Tool Systems Drill bit with wedge shaped eduction jets
US4687067A (en) * 1986-05-01 1987-08-18 Smith International, Inc. Crossflow rotary cone rock bit with extended nozzles

Also Published As

Publication number Publication date
EP0735232B1 (en) 2000-12-13
EP0735232A1 (en) 1996-10-02

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Legal Events

Date Code Title Description
8332 No legal effect for de