Michael K Luke

US Patent:

42904846, Sep 22, 1981

Filed:

Jul 18, 1980

Appl. No.:

6/170209

Inventors:

Clifford H. Beall - Broken Arrow OK
Amareswar Amancharla - League City TX
Michael A. Luke - Houston TX

Assignee:

Baker International Corporation - Orange CA

International Classification:

E21B 2300
E21B 3310

US Classification:

166242

Abstract:

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 retaining 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.