Threaded pipe connection

Details Threaded pipe connection Threaded pipe connection

1983-10-05

1986-05-13

Arola, Dave W.

Pipe joints or couplings

Temperature-responsive

2853323, 285333, 2853344, 285355, 285350, 277 26, F16L 5500

Patent

active

045882134

ABSTRACT:
In the preferred embodiment, this invention provides a threaded pipe coupling for connection with a conventional threaded pipe end so as to effect improved sealing against internal fluid pressure and against external fluid pressure as may be required in an oil or gas well. The coupling form causes the thread contact pressure to be greater at the maximum and minimum thread contact diameters than exists at intermediate points along the length of thread contact. An auxiliary plastic seal that will undergo thermal cycling is also provided.

REFERENCES:
patent: 2183644 (1939-12-01), Frame
patent: 2587544 (1952-02-01), Sneddon
patent: 2907589 (1959-10-01), Knox
patent: 2980451 (1961-04-01), Taylor et al.
patent: 3047316 (1962-07-01), Wehring et al.
patent: 3079181 (1963-02-01), Wissel
patent: 3100656 (1963-08-01), MacArthur
patent: 3572777 (1971-03-01), Blose
patent: 4085951 (1970-04-01), Morris
patent: 4121862 (1978-10-01), Greer
patent: 4346920 (1982-08-01), Dailey
A.S.M.E. Paper 83-Pet 11-Jan. 30-Feb. 3, 1983 API Connection Modification to Improve Pressure Integrity; Bollfrass et al.
Coupling Procedure Modification Improves Sealing Integrity of API Connections; Bollfrass et al; Oil & Gas Journal 4/4/83 pp. 131-135.
Leak Resistance Limit-Tubular Products 12 pp. Thomas L. Blose Jul. 21, 1970.

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