Hanger and seal assembly

Wells – Packers or plugs – With detachable setting means

Patent

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Details

166208, 2771162, 2771168, 277124, 277236, 285140, E21B 3304

Patent

active

048238716

ABSTRACT:
The improved structure of the present invention includes a hanger having a landing shoulder for engaging the landing seat within a wellhead housing, a hanger holddown ring, an external sealing surface spaced from the internal sealing surface of the housing to form the annulus to be sealed, a seal assembly including a seal body having external metal seal legs diverging outward but having a free diameter less than the diameter of the housing internal sealing surface and internal metal seal legs converging inwardly and having a free diameter smaller than the diameter of the hanger external sealing surface, a lower body movably connected to the seal body and having an upstanding rim engaging the lower outer seal leg, an upper body movably connected to the seal body, a loading ring surrounding the upper portion of the seal body and engaging the upper outer seal leg, a lock down ring for securing said seal assembly to said hanger after the seal assembly has been set in loaded sealed position and a pin for retaining said loading ring against the upper outer seal leg to latch the seal assembly in loaded sealed position. In the modified form the seal body includes an upper outer seal leg extending upwardly and outward and having a free diameter less than the internal sealing diameter of the housing and a lower outer seal leg extending upwardly and having a free diameter larger than the internal sealing diameter of the housing.

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