Seal assembly for a well housing hanger structure

Details Seal assembly for a well housing hanger structure Seal assembly for a well housing hanger structure

1991-02-25

1992-07-14

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

2771166, 277236, 166196, 166202, E21B 3303

Patent

active

051296608

ABSTRACT:
The present invention relates to an improved seal assembly for sealing between the interior sealing surface of a well housing and the exterior sealing surface of a hanger landed within the well housing and includes a seal body having a pair of outer lips diverging outwardly for sealing against the housing interior sealing surface and an interior series of annular ridges which have a diameter smaller than the outer diameter of the hanger exterior sealing surface, an upper energizer and a lower energizer for coacting with said lips to move the lips into sealing position and to store the energy of setting to ensure sealing engagement of the lips. The shape of the sealing lips is such that they each provide a sealing surface and a ridge having a greater outer diameter than the sealing surface so that when the seal assembly is being run into the housing any scratches resulting from the engagement of the seal with the interior of the housing is on the ridges and not on the sealing surfaces. Additionally, the exterior of the outwardly diverging lips is provided with a coating of a scratch healing material, such as silver plate, so that scratches on the sealing surface can be healed when the sealing surface is wedged into sealing engagement with the interior wall of the housing.

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