FR966942A - Improvements to perforators or similar tools - Google Patents

Improvements to perforators or similar tools

Info

Publication number
FR966942A
FR966942A FR966942DA FR966942A FR 966942 A FR966942 A FR 966942A FR 966942D A FR966942D A FR 966942DA FR 966942 A FR966942 A FR 966942A
Authority
FR
France
Prior art keywords
perforators
similar tools
tools
similar
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
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.)
Atlas Copco AB
Original Assignee
Atlas Diesel AB
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 Atlas Diesel AB filed Critical Atlas Diesel AB
Application granted granted Critical
Publication of FR966942A publication Critical patent/FR966942A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B19/084—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 with flexible drawing means, e.g. cables
FR966942D 1947-05-30 1948-05-28 Improvements to perforators or similar tools Expired FR966942A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE637285X 1947-05-30

Publications (1)

Publication Number Publication Date
FR966942A true FR966942A (en) 1950-10-20

Family

ID=20313686

Family Applications (1)

Application Number Title Priority Date Filing Date
FR966942D Expired FR966942A (en) 1947-05-30 1948-05-28 Improvements to perforators or similar tools

Country Status (2)

Country Link
FR (1) FR966942A (en)
GB (1) GB637285A (en)

Also Published As

Publication number Publication date
GB637285A (en) 1950-05-17

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