FR2185746A1 - Coring-type drill bit cage - with core separating and retaining levers - Google Patents

Coring-type drill bit cage - with core separating and retaining levers

Info

Publication number
FR2185746A1
FR2185746A1 FR7218536A FR7218536A FR2185746A1 FR 2185746 A1 FR2185746 A1 FR 2185746A1 FR 7218536 A FR7218536 A FR 7218536A FR 7218536 A FR7218536 A FR 7218536A FR 2185746 A1 FR2185746 A1 FR 2185746A1
Authority
FR
France
Prior art keywords
coring
drill bit
type drill
core separating
cage
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
FR7218536A
Other languages
French (fr)
Other versions
FR2185746B3 (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.)
BOURLIER JACQUE
Original Assignee
BOURLIER JACQUE
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 BOURLIER JACQUE filed Critical BOURLIER JACQUE
Priority to FR7218536A priority Critical patent/FR2185746A1/en
Publication of FR2185746A1 publication Critical patent/FR2185746A1/en
Application granted granted Critical
Publication of FR2185746B3 publication Critical patent/FR2185746B3/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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E21B25/10—Formed core retaining or severing 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
    • E21B10/02—Core 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E21B25/10—Formed core retaining or severing means
    • E21B25/14—Formed core retaining or severing means mounted on pivot transverse to core axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

The cage, comprises a cylindrical skirt with lower drilling teeth, a core-removing device mounted on the skirt just above the teeth and a head traverse carrying the central element for driving the skirt rotatably, the length of the traverse being adjustable to match the skirt diameter.
FR7218536A 1972-05-24 1972-05-24 Coring-type drill bit cage - with core separating and retaining levers Granted FR2185746A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7218536A FR2185746A1 (en) 1972-05-24 1972-05-24 Coring-type drill bit cage - with core separating and retaining levers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7218536A FR2185746A1 (en) 1972-05-24 1972-05-24 Coring-type drill bit cage - with core separating and retaining levers

Publications (2)

Publication Number Publication Date
FR2185746A1 true FR2185746A1 (en) 1974-01-04
FR2185746B3 FR2185746B3 (en) 1975-08-08

Family

ID=9099019

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7218536A Granted FR2185746A1 (en) 1972-05-24 1972-05-24 Coring-type drill bit cage - with core separating and retaining levers

Country Status (1)

Country Link
FR (1) FR2185746A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3100559A1 (en) * 2019-09-09 2021-03-12 Institut De Radioprotection Et De Surete Nucleaire Method and device for large-diameter drilling or for digging wells along several inclinations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3100559A1 (en) * 2019-09-09 2021-03-12 Institut De Radioprotection Et De Surete Nucleaire Method and device for large-diameter drilling or for digging wells along several inclinations
WO2021048496A1 (en) * 2019-09-09 2021-03-18 Institut De Radioprotection Et De Surete Nucleaire Method and device for large-diameter borehole or digging of wells following a plurality of inclinations

Also Published As

Publication number Publication date
FR2185746B3 (en) 1975-08-08

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