Wellhead seal for wide temperature and pressure ranges

Details Wellhead seal for wide temperature and pressure ranges Wellhead seal for wide temperature and pressure ranges

1991-12-18

1993-01-19

Britts, Ramon S.

Wells

Above ground apparatus

With seal for reciprocating member

277 34, 285 96, E21B 3304

Patent

active

051800080

ABSTRACT:
A wellhead seal for establishing and maintaining a seal between a wellhead and inner pipe element. The seal is an annular elastomeric body having an inner axial surface with a generally convex central portion for pressing against the inner pipe element surrounded by the wellhead and an outer axial surface with a generally concave central portion which, in one embodiment, receives an annular energizing element to increase the sealing force between the body and casing. An annular anti-extrusion ring is provided at the inner edge of each radial end surface.

REFERENCES:
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patent: 2192805 (1940-03-01), Seamark
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patent: 2945665 (1960-07-01), Regan et al.
patent: 3582112 (1971-06-01), Pico
patent: 3614111 (1971-10-01), Regan
patent: 4206929 (1980-06-01), Bruce
patent: 4345735 (1982-08-01), Regan
patent: 4411434 (1983-10-01), Lewis
patent: 5044442 (1991-09-01), Nobileau
patent: 5062479 (1991-11-01), Bailey et al.

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