Pipe joints or couplings – Serial,relatively movable portions
Patent
1985-10-21
1987-07-07
Husar, Cornelius J.
Pipe joints or couplings
Serial,relatively movable portions
285146, 285178, 285350, 285147, 277188R, 175423, F16L 2100
Patent
active
046782095
ABSTRACT:
An improved casing hanger for suspending a pipe string from a casing head at a well head employs a plurality of slip members having a series of teeth which are adapted for frictionally engaging the wedging surface of a slip bowl. The teeth have a profile which gradually tapers in accordance with the distance from a central portion of the slip member. The slip member is deformable from a first configuration wherein the edges of one surface of the slip member engage the pipe string while the central portion of the surface is spaced from the pipe string and the opposite surface of the slip member has a central portion which engages the slip bowl with the ends of the outer surface being spaced therefrom to a loaded configuration wherein the surfaces of the slip member engage the pipe string and the slip bowl along a series of substantially continuous arcuate paths. A deformable wall structure is also disposed adjacent the sealing element so that in the event that the compressive force exerted by the seal element exceeds a pre-established threshold value. The wall deforms to relieve the compressive force exerted by the sealing element.
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patent: 4402535 (1983-09-01), Bridges
Husar Cornelius J.
Nicholson Eric K.
Vetco Offshore Inc.
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