E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/43
E21B 23/06 (2006.01) E21B 17/06 (2006.01) E21B 17/07 (2006.01) E21B 43/10 (2006.01)
Patent
CA 1167375
TITLE: SEAL RECEPTACLE ASSEMBLY ABSTRACT OF THE INVENTION A seal receptacle assembly is provided for affixation on a well conduit. The seal receptacle assembly can be provided to permit telescopic contraction and expansion of the well conduit in response to heating, cooling, or pressurization of the well conduit. The seal receptacle assembly includes an inner body sleeve having a lower end connected to the well tool or a conduit member, and an annular sealing element positioned over an outer cylindrical static sealing surface formed on the inner body sleeve. An outer housing having one end connected to the well conduit telescopes over the upper portion of the inner body sleeve. The housing has an inner cylindrical dynamic sealing surface for sealingly and slidably engaging the sealing element. Means, such as a radially compressible retaining ring, are mounted in an outer groove formed on the inner body sleeve above the sealing element, or, alternatively, a collet is provided, for maintaining the sealing element on the static sealing surface during normal expansion and contraction of the seal receptacle assembly. Upward movement of the outer housing causes the retain- ing ring, or collet, to expand outwardly into an inner groove in the housing and permit the housing to lift the sealing element off the static sealing surface. The sealing element and the dynamic sealing surface can then be removed from the well in a single retrieval operation.
381826
Amancharla Amareswar
Beall Clifford H.
Luke Michael A.
Baker International Corporation
Borden Ladner Gervais Llp
LandOfFree
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