FR2220662B1 - - Google Patents

Info

Publication number
FR2220662B1
FR2220662B1 FR7407251A FR7407251A FR2220662B1 FR 2220662 B1 FR2220662 B1 FR 2220662B1 FR 7407251 A FR7407251 A FR 7407251A FR 7407251 A FR7407251 A FR 7407251A FR 2220662 B1 FR2220662 B1 FR 2220662B1
Authority
FR
France
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
Application number
FR7407251A
Other languages
French (fr)
Other versions
FR2220662A1 (en
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 claimed from GB1053073A external-priority patent/GB1469524A/en
Application filed by Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of FR2220662A1 publication Critical patent/FR2220662A1/en
Application granted granted Critical
Publication of FR2220662B1 publication Critical patent/FR2220662B1/fr
Granted 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • 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
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Sheet Holders (AREA)
  • Fertilizing (AREA)
FR7407251A 1973-03-05 1974-03-04 Rotary drilling tool - combines mechanical cutting with fluid jet breaking action Granted FR2220662A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1053073A GB1469524A (en) 1973-03-05 1973-03-05 Rotary bit for hydraulically drilling holes into underground formations
GB5143273 1973-11-06

Publications (2)

Publication Number Publication Date
FR2220662A1 FR2220662A1 (en) 1974-10-04
FR2220662B1 true FR2220662B1 (en) 1982-06-04

Family

ID=26247583

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407251A Granted FR2220662A1 (en) 1973-03-05 1974-03-04 Rotary drilling tool - combines mechanical cutting with fluid jet breaking action

Country Status (6)

Country Link
JP (1) JPS5743717B2 (en)
CA (1) CA997749A (en)
DE (1) DE2410236C3 (en)
FR (1) FR2220662A1 (en)
NL (1) NL177241C (en)
NO (1) NO143391C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098363A (en) * 1977-04-25 1978-07-04 Christensen, Inc. Diamond drilling bit for soft and medium hard formations
JP2012127062A (en) * 2010-12-13 2012-07-05 Mitsubishi Materials Corp Drilling bit

Also Published As

Publication number Publication date
NL7402876A (en) 1974-09-09
FR2220662A1 (en) 1974-10-04
DE2410236A1 (en) 1974-09-12
NL177241C (en) 1985-08-16
JPS5743717B2 (en) 1982-09-16
DE2410236B2 (en) 1980-03-06
NO143391B (en) 1980-10-20
JPS49118601A (en) 1974-11-13
NO143391C (en) 1981-01-28
NO740735L (en) 1974-09-06
DE2410236C3 (en) 1980-10-23
CA997749A (en) 1976-09-28

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Legal Events

Date Code Title Description
ST Notification of lapse