Wells – Processes – Placing or shifting well part
Patent
1993-12-30
1995-05-23
Schoeppel, Roger J.
Wells
Processes
Placing or shifting well part
166120, 166123, 166181, 166187, E21B 3312
Patent
active
054172896
ABSTRACT:
An inflatable packer and a method for its use are provided for introduction into a subterranean well bore on a conduit. A pinch can form in the inflatable elastomeric bladder of the packer during inflation, forming a seal on the central body, which obstructs the effective passage of pressured fluid, thereby obstructing effective inflation and deflation of the bladder. The packer provides a tension means such that, after an initial amount of inflation, a predetermined amount of inflation pressure must be introduced to the bladder before an end of the bladder is released for axial movement relative to the central body, allowing a gap to form between the bladder and the body and a predisposition to radially expand before full inflation, to diminish the bladder's propensity to pinch and seal on the body.
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Norvell, Jr. William C.
Schoeppel Roger J.
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