CA1213879A - Drifting equipment - Google Patents

Drifting equipment

Info

Publication number
CA1213879A
CA1213879A CA000453461A CA453461A CA1213879A CA 1213879 A CA1213879 A CA 1213879A CA 000453461 A CA000453461 A CA 000453461A CA 453461 A CA453461 A CA 453461A CA 1213879 A CA1213879 A CA 1213879A
Authority
CA
Canada
Prior art keywords
valve member
dome
shaped valve
equipment
throughflow
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
CA000453461A
Other languages
English (en)
French (fr)
Inventor
Jan-Erik Norberg
Jorgen R. Almgren
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.)
Trelleborg AB
Original Assignee
Trelleborg 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 Trelleborg AB filed Critical Trelleborg AB
Application granted granted Critical
Publication of CA1213879A publication Critical patent/CA1213879A/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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Check Valves (AREA)
CA000453461A 1983-05-06 1984-05-03 Drifting equipment Expired CA1213879A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8302599A SE8302599L (sv) 1983-05-06 1983-05-06 Anordning vid en borrutrustning
SE8302599-9 1983-05-06

Publications (1)

Publication Number Publication Date
CA1213879A true CA1213879A (en) 1986-11-12

Family

ID=20351112

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000453461A Expired CA1213879A (en) 1983-05-06 1984-05-03 Drifting equipment

Country Status (6)

Country Link
EP (1) EP0142545A1 (it)
CA (1) CA1213879A (it)
IT (1) IT1174076B (it)
SE (1) SE8302599L (it)
WO (1) WO1984004562A1 (it)
ZA (1) ZA843410B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578365A (en) * 1984-11-26 1986-03-25 General Electric Company High thermal conductivity ceramic body of aluminum nitride
SE466319B (sv) * 1989-03-07 1992-01-27 Atlas Copco Constr & Mining Taetningsanordning foer vaetskespolning vid slaaende bergborrning

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859733A (en) * 1955-11-23 1958-11-11 Bassinger Tool Company Fluid actuated impact tool
US4106571A (en) * 1976-12-06 1978-08-15 Reed Tool Co. Pneumatic impact drilling tool
SE413929B (sv) * 1977-09-02 1980-06-30 Trelleborgs Gummifabriks Ab Injekteringsanordning

Also Published As

Publication number Publication date
SE8302599D0 (sv) 1983-05-06
SE8302599L (sv) 1984-11-07
IT8420796A1 (it) 1985-11-04
EP0142545A1 (en) 1985-05-29
IT8420796A0 (it) 1984-05-04
IT1174076B (it) 1987-07-01
WO1984004562A1 (en) 1984-11-22
ZA843410B (en) 1984-12-24

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Legal Events

Date Code Title Description
MKEX Expiry