Oil well pipe joint

Details Oil well pipe joint Oil well pipe joint

1985-03-27

1986-12-23

Husar, Cornelius J.

Pipe joints or couplings

With casing, lining or protector

Lined

285 94, 285333, 285422, F16L 914

Patent

active

046308490

ABSTRACT:
An oil well pipe joint comprising a metal-to-metal sealing portion without thread is disclosed. A metal-plated or resin-coated layer exhibiting improved resistance to galling is provided on the outer peripheral surface of a thread-free lip portion which constitutes part of the metal-to-metal sealing portion on an externally-threaded member. At the metal sealing portion, satisfactory sealing properties are maintained under severe corrosive conditions, enabling the joint to be connected and disconnected over 10 times, and usually over 25 times.

REFERENCES:
patent: 1141151 (1915-06-01), Speller
patent: 3627561 (1971-12-01), Richards
patent: 3716348 (1973-02-01), Perkins
patent: 3869393 (1975-03-01), Booker
patent: 4049861 (1977-09-01), Nozari
patent: 4113914 (1978-09-01), Doss
patent: 4384737 (1983-05-01), Reusser
patent: 4474651 (1984-10-01), Yauchi et al.
patent: 4506432 (1985-03-01), Smith
patent: 4511606 (1985-04-01), Ehrlich et al.
patent: 4527815 (1985-07-01), Frick
patent: 4538840 (1985-09-01), DeLange

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