DE362869C - Hydraulic jaw catcher for pulling and unscrewing pipes in boreholes - Google Patents

Hydraulic jaw catcher for pulling and unscrewing pipes in boreholes

Info

Publication number
DE362869C
DE362869C DED39679D DED0039679D DE362869C DE 362869 C DE362869 C DE 362869C DE D39679 D DED39679 D DE D39679D DE D0039679 D DED0039679 D DE D0039679D DE 362869 C DE362869 C DE 362869C
Authority
DE
Germany
Prior art keywords
boreholes
catcher
pulling
hydraulic jaw
unscrewing pipes
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
DED39679D
Other languages
German (de)
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.)
Wintershall Dea Deutschland AG
Original Assignee
Deutsche Erdoel AG
Publication date
Priority to DED39679D priority Critical patent/DE362869C/en
Application granted granted Critical
Publication of DE362869C publication Critical patent/DE362869C/en
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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears

Landscapes

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

Description

*) Von dem Patentsucher ist als der Erfinder angegeben worden:*) The patent seeker stated as the inventor:

Johannes Völker in Aschaffenburg.Johannes Völker in Aschaffenburg.

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims (1)

Patent-Anspruch :Patent claim: Hydraulischer Backenfänger zum Ziehen und Abschrauben von Rohren in Bohrlöchern, gekennzeichnet durch eine nach dem Ablassen des hydraulischen Drucks in Tätigkeit tretende Feder, welche den die Klemmbacken steuernden Kolben hebt und damit die Lösung der Vorrichtung von der Rohrwand bewirkt.Hydraulic jaw catcher for pulling and unscrewing pipes in Boreholes, characterized by a spring that comes into operation after the hydraulic pressure has been released, which lifts the piston controlling the clamping jaws and thus causes the device to be released from the pipe wall.
DED39679D Hydraulic jaw catcher for pulling and unscrewing pipes in boreholes Expired DE362869C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED39679D DE362869C (en) Hydraulic jaw catcher for pulling and unscrewing pipes in boreholes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED39679D DE362869C (en) Hydraulic jaw catcher for pulling and unscrewing pipes in boreholes

Publications (1)

Publication Number Publication Date
DE362869C true DE362869C (en) 1922-11-02

Family

ID=7044900

Family Applications (1)

Application Number Title Priority Date Filing Date
DED39679D Expired DE362869C (en) Hydraulic jaw catcher for pulling and unscrewing pipes in boreholes

Country Status (1)

Country Link
DE (1) DE362869C (en)

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