Casing hanger seal with test port

Details Casing hanger seal with test port Casing hanger seal with test port

1992-09-28

1994-02-15

Britts, Ramon S.

Wells

Processes

Placing or shifting well part

166115, 166383, 73 405R, 277 72R, 277119, 285917, E21B 2300

Patent

active

052858537

ABSTRACT:
A casing hanger seal has facilities to enable periodic testing from the exterior of the wellhead housing. The casing hanger seal has inner and outer walls separated by a cavity. An energizing member moves downward to force the inner and outer walls into engagement with the casing hanger and bore of the wellhead housing. Test passages extend through the inner and outer walls, energizing member, and wellhead housing. The test passages divide the seal member into primary and secondary seal areas. Applications of test fluid, from the exterior, to the test passages determines whether a leak is present.

REFERENCES:
patent: 3141685 (1964-07-01), Watts
patent: 3872713 (1975-03-01), Ilfrey et al.
patent: 4116044 (1978-09-01), Garrett
patent: 4152924 (1979-05-01), Mayo
patent: 4373380 (1983-02-01), Mayo
patent: 4410186 (1983-10-01), Pierce
patent: 4665979 (1987-05-01), Boehm
patent: 4771828 (1988-09-01), Cassity
patent: 4932472 (1990-06-01), Boehm

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