Seals for use in oil and gas well production tubing

Details Seals for use in oil and gas well production tubing Seals for use in oil and gas well production tubing

1986-02-18

1987-04-07

Arola, Dave W.

Pipe joints or couplings

Particular interface

Tapered

285350, 285910, A16L 2500

Patent

active

046554858

ABSTRACT:
An improved seal for use in couplings, and joints, as used in the formation of production tubing. Such seal is located in an inwardly tapered threaded section of the coupling, or joint, and it is characterized generally as an annular groove and ring-shaped extrudable generally non-resilient sealing member seated in said groove, said ring-member being extrudable into and confinable within said groove when said couplings, or joints, are made up by threadably connecting therewith a threaded end of pipe. The bottom face of said groove, in particular, is contoured sufficiently that a portion of the distorted ring-shaped sealing member is displaced therein to reduce the amount of pressure normally applied against the wall and, in its most preferred embodiment, the annular groove is provided with side walls, and interconnected angular sides cut into the threaded portion of the coupling, or joint.

REFERENCES:
patent: 874652 (1907-12-01), Bailey
patent: 2246436 (1941-06-01), Downey
patent: 2383692 (1945-08-01), Smith
patent: 2980451 (1961-04-01), Taylor et al.

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