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SE8102725L - DEVICE FOR LOST REMOVABLE CONNECTION OF DRILLS - Google Patents

DEVICE FOR LOST REMOVABLE CONNECTION OF DRILLS

Info

Publication number
SE8102725L
SE8102725L SE8102725A SE8102725A SE8102725L SE 8102725 L SE8102725 L SE 8102725L SE 8102725 A SE8102725 A SE 8102725A SE 8102725 A SE8102725 A SE 8102725A SE 8102725 L SE8102725 L SE 8102725L
Authority
SE
Sweden
Prior art keywords
male part
thread
female part
ring shaped
guiding surface
Prior art date
Application number
SE8102725A
Other languages
Swedish (sv)
Other versions
SE443604B (en
Inventor
S W Eriksson
Original Assignee
Craelius 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 Craelius Ab filed Critical Craelius Ab
Priority to SE8102725A priority Critical patent/SE443604B/en
Publication of SE8102725L publication Critical patent/SE8102725L/en
Publication of SE443604B publication Critical patent/SE443604B/en

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded

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)
  • Gasket Seals (AREA)

Abstract

An apparatus for detachably connecting two bore tubes (1, 4), where the one is fitted with a threaded female part (3) and the other with a threaded male part (2), which fits into it. The female part's thread's (6) outer and inner diameters are so much larger than the male part's thread's (5) outer and inner diameters that radial play (S1 and S2) arises between them, and the male part is fitted with at least one ring shaped surface (7, 10) for guiding engagement with a ring shaped surface (9, 12) on the female part during the final phase of the connection operation. The flank (5b) of the male part's thread (5) which is nearest to the male part's outer end makes an angle of 45-75 degrees to the bore tube's long axis (1), and the flank (6b) on the female part's thread (6), which works with this one is correspondingly shaped. An O-ring (13) is placed in a track (14) in the ring shaped guiding surface (7) on the male part and forms a seal between this guiding surface and the corresponding guiding surface (9) on the female part.<IMAGE>
SE8102725A 1981-04-29 1981-04-29 Apparatus for detachably connecting bore tubes SE443604B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8102725A SE443604B (en) 1981-04-29 1981-04-29 Apparatus for detachably connecting bore tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8102725A SE443604B (en) 1981-04-29 1981-04-29 Apparatus for detachably connecting bore tubes

Publications (2)

Publication Number Publication Date
SE8102725L true SE8102725L (en) 1982-10-30
SE443604B SE443604B (en) 1986-03-03

Family

ID=20343709

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8102725A SE443604B (en) 1981-04-29 1981-04-29 Apparatus for detachably connecting bore tubes

Country Status (1)

Country Link
SE (1) SE443604B (en)

Also Published As

Publication number Publication date
SE443604B (en) 1986-03-03

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