FR2141990A1 - - Google Patents

Info

Publication number
FR2141990A1
FR2141990A1 FR7221709A FR7221709A FR2141990A1 FR 2141990 A1 FR2141990 A1 FR 2141990A1 FR 7221709 A FR7221709 A FR 7221709A FR 7221709 A FR7221709 A FR 7221709A FR 2141990 A1 FR2141990 A1 FR 2141990A1
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.)
Withdrawn
Application number
FR7221709A
Other languages
French (fr)
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.)
RANSOMES ET RAPIER Ltd
Original Assignee
RANSOMES ET RAPIER Ltd
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 RANSOMES ET RAPIER Ltd filed Critical RANSOMES ET RAPIER Ltd
Publication of FR2141990A1 publication Critical patent/FR2141990A1/fr
Withdrawn legal-status Critical Current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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/081—Screw-and-nut feed mechanisms
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods

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)
FR7221709A 1971-06-17 1972-06-16 Withdrawn FR2141990A1 (ref)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2852671 1971-06-17

Publications (1)

Publication Number Publication Date
FR2141990A1 true FR2141990A1 (ref) 1973-01-26

Family

ID=10277035

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7221709A Withdrawn FR2141990A1 (ref) 1971-06-17 1972-06-16

Country Status (3)

Country Link
DE (1) DE2229471A1 (ref)
FR (1) FR2141990A1 (ref)
ZA (1) ZA723865B (ref)

Also Published As

Publication number Publication date
DE2229471A1 (de) 1972-12-21
ZA723865B (en) 1973-07-25

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Legal Events

Date Code Title Description
ST Notification of lapse