Wells – Processes – Placing or shifting well part
Patent
1981-06-16
1983-02-08
Pate, III, William F.
Wells
Processes
Placing or shifting well part
166138, 166217, 166387, E21B 2302, E21B 33129, E21B 4300
Patent
active
043723934
ABSTRACT:
A sealing assembly comprising a casing bore receptacle, an annular packoff member, and a tubing carried mandrel for use in establishing sealing integrity between a fluid transmission conduit or tubing and an outer conduit or casing, is disclosed. The casing bore receptacle is incorporable in the casing and the annular packoff member is initially carriable on the mandrel. Seals on the interior and exterior of the packoff member establish a seal with the mandrel and the casing. Upon abutting engagement of the packoff member and the casing bore receptacle, a collet on the packoff member is released from the mandrel and cammed radially outward into engagement with the casing bore receptacle to anchor the packoff member to the casing bore receptacle. The mandrel can then move relative to the packoff member and the casing without destroying the seal.
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Page 6438 and 6439-vol. 4-of the 1978-1979 Composite Catalog of Oil Field Equipment & Services-33rd Revision-published by World Oil.
Page 672-vol. 1-of the 1980-1981 Composite Catalog of Oil Field Equipment & Services-34th Revision-published by World Oil.
Baker International Corporation
Norvell, Jr. William C.
Pate III William F.
Pitts Robert W.
Suchfield George A.
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