Threaded connection tubular goods

Details Threaded connection tubular goods Threaded connection tubular goods

1998-03-30

2000-04-04

Nicholson, Eric K.

Pipe joints or couplings

Particular interface

Tapered

2853344, 285333, 285390, F16L 2500

Patent

active

060451653

ABSTRACT:
A threaded connection for the oil country tubular goods, according to the invention, is provided with either an internal shoulder or an external shoulder or both, each comprising a seal portion and a torque shoulder, and characterized by satisfying the following conditions (1) and (2):

REFERENCES:
patent: 2239942 (1941-04-01), Stone et al.
patent: 2258066 (1941-10-01), Oyen
patent: 2992019 (1961-07-01), MacArthur
patent: 3856337 (1974-12-01), Ehm et al.
patent: 3870351 (1975-03-01), Matsuki
patent: 4384737 (1983-05-01), Reusser
patent: 4732416 (1988-03-01), Dearden et al.
patent: 4822081 (1989-04-01), Blose
patent: 4958862 (1990-09-01), Cappelli et al.
patent: 5649725 (1997-07-01), Nagasaku et al.

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