FR1218669A - Trépan - Google Patents

Trépan

Info

Publication number
FR1218669A
FR1218669A FR782878A FR782878A FR1218669A FR 1218669 A FR1218669 A FR 1218669A FR 782878 A FR782878 A FR 782878A FR 782878 A FR782878 A FR 782878A FR 1218669 A FR1218669 A FR 1218669A
Authority
FR
France
Prior art keywords
trepan
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
Application number
FR782878A
Other languages
English (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.)
Hycalog Inc
Original Assignee
Hycalog Inc
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 Hycalog Inc filed Critical Hycalog Inc
Application granted granted Critical
Publication of FR1218669A publication Critical patent/FR1218669A/fr
Expired 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
    • E21B10/02—Core bits
    • E21B10/04—Core bits with core destroying means
    • 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

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)
FR782878A 1957-12-30 1958-12-29 Trépan Expired FR1218669A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1218669XA 1957-12-30 1957-12-30

Publications (1)

Publication Number Publication Date
FR1218669A true FR1218669A (fr) 1960-05-12

Family

ID=22399250

Family Applications (1)

Application Number Title Priority Date Filing Date
FR782878A Expired FR1218669A (fr) 1957-12-30 1958-12-29 Trépan

Country Status (1)

Country Link
FR (1) FR1218669A (fr)

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