E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/51.3
E21B 33/03 (2006.01) E21B 33/04 (2006.01) F16L 15/02 (2006.01) E21B 33/00 (2006.01)
Patent
CA 1045971
ABSTRACT OF THE DISCLOSURE A packing for a wellhead assembly to seal between a casing and a bore within the wellhead as the casing moves longi- tudinally in the wellhead in response to thermal conditions. The packing is mounted on the exterior free upper end portion of the casing inside the wellhead bore.
258226
Chambless Joe G.
Freeman John W.
LandOfFree
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