SEAL ASSEMBLY FOR A DOWNHOLE DEVICE

摘要

A sealing assembly for a downhole device has first (12) and second sealing (22) components which are urged together to make up the assembly such that a first sealing surface (34) on the first component radially presses a lip member (44) on the second component to change the angle of a second sealing surface (45) in the connected assembly. The components are urged together by a driving member (60) which can have screw threads that cooperate with the first component. The lip may be annular and may be formed by an undercut or recess (42) radially inwardly or outwardly of the lip member, allowing the lip member to bend radially inwards into the recess, during insertion of the second sealing component into the first.

主权项

1. A sealing assembly for a downhole device, the sealing assembly comprising:
a first sealing component having a longitudinal axis and a recess having a first sealing surface; a second sealing component adapted to be received within the first sealing component and having an axially projecting lip member having a second sealing surface; and wherein when the second sealing component is axially inserted into the first sealing component the second sealing surface lies at a first angle relative to a longitudinal axis, and the first sealing surface is adapted to press the lip member in a radial direction during the insertion, such that the second sealing surface moves to a second angle relative to the longitudinal axis.