FR961918A - - Google Patents

Info

Publication number
FR961918A
FR961918A FR961918DA FR961918A FR 961918 A FR961918 A FR 961918A FR 961918D A FR961918D A FR 961918DA FR 961918 A FR961918 A FR 961918A
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
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.)
Publication date
Application granted granted Critical
Publication of FR961918A publication Critical patent/FR961918A/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
    • 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

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)
FR961918D 1946-03-08 Expired FR961918A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US634139XA 1946-03-08 1946-03-08

Publications (1)

Publication Number Publication Date
FR961918A true FR961918A (fr) 1950-05-25

Family

ID=22049031

Family Applications (1)

Application Number Title Priority Date Filing Date
FR961918D Expired FR961918A (fr) 1946-03-08

Country Status (3)

Country Link
BE (1) BE480737A (fr)
FR (1) FR961918A (fr)
GB (1) GB634139A (fr)

Also Published As

Publication number Publication date
BE480737A (fr)
GB634139A (en) 1950-03-15

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