FR2275633A1 - Well boring head - ram-operated catspaws supplied from same source as hydraulic tool motor - Google Patents

Well boring head - ram-operated catspaws supplied from same source as hydraulic tool motor

Info

Publication number
FR2275633A1
FR2275633A1 FR7421223A FR7421223A FR2275633A1 FR 2275633 A1 FR2275633 A1 FR 2275633A1 FR 7421223 A FR7421223 A FR 7421223A FR 7421223 A FR7421223 A FR 7421223A FR 2275633 A1 FR2275633 A1 FR 2275633A1
Authority
FR
France
Prior art keywords
catspaws
supplied
same source
ram
operated
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
FR7421223A
Other languages
French (fr)
Other versions
FR2275633B1 (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.)
Valeo SE
Original Assignee
Francaise du Ferodo SA
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 Francaise du Ferodo SA filed Critical Francaise du Ferodo SA
Priority to FR7421223A priority Critical patent/FR2275633A1/en
Publication of FR2275633A1 publication Critical patent/FR2275633A1/en
Application granted granted Critical
Publication of FR2275633B1 publication Critical patent/FR2275633B1/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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/02—Fluid rotary type drives
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/18—Anchoring or feeding in the borehole

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)

Abstract

The boring tool is mounted at the end of a cylindrical guiding structure equipped at one or more levels with guiding catspaws diametrically opposite each other and thrust outwards against the bore walls clear of the structure. The motor is a hydraulic one, and the catspaws are actuated by rams supplied from the same source as the motor. One of each of the catspaws in a pair can be attached to the ram cylinder and the other to its piston, and they can also be linked together by a mechanism with a self-centring effect, so that they both protrude for the same distance from the structure centre line.
FR7421223A 1974-06-19 1974-06-19 Well boring head - ram-operated catspaws supplied from same source as hydraulic tool motor Granted FR2275633A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7421223A FR2275633A1 (en) 1974-06-19 1974-06-19 Well boring head - ram-operated catspaws supplied from same source as hydraulic tool motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7421223A FR2275633A1 (en) 1974-06-19 1974-06-19 Well boring head - ram-operated catspaws supplied from same source as hydraulic tool motor

Publications (2)

Publication Number Publication Date
FR2275633A1 true FR2275633A1 (en) 1976-01-16
FR2275633B1 FR2275633B1 (en) 1978-01-13

Family

ID=9140232

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7421223A Granted FR2275633A1 (en) 1974-06-19 1974-06-19 Well boring head - ram-operated catspaws supplied from same source as hydraulic tool motor

Country Status (1)

Country Link
FR (1) FR2275633A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662023A (en) * 1985-05-08 1987-05-05 Westinghouse Electric Corp. Ice removal auger for ice condenser containment
EP0298537A2 (en) * 1987-06-25 1989-01-11 Shell Internationale Researchmaatschappij B.V. Device and method for underreaming a borehole
FR2832454A1 (en) * 2001-11-20 2003-05-23 Cie Du Sol VERTICAL WELL DRILLING EQUIPMENT

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662023A (en) * 1985-05-08 1987-05-05 Westinghouse Electric Corp. Ice removal auger for ice condenser containment
EP0298537A2 (en) * 1987-06-25 1989-01-11 Shell Internationale Researchmaatschappij B.V. Device and method for underreaming a borehole
EP0298537B1 (en) * 1987-06-25 1992-12-02 Shell Internationale Researchmaatschappij B.V. Device and method for underreaming a borehole
FR2832454A1 (en) * 2001-11-20 2003-05-23 Cie Du Sol VERTICAL WELL DRILLING EQUIPMENT
US6955232B2 (en) 2001-11-20 2005-10-18 Compagnie Du Sol Equipment for drilling vertical boreholes

Also Published As

Publication number Publication date
FR2275633B1 (en) 1978-01-13

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse