Progressively inflated packers

Details Progressively inflated packers Progressively inflated packers

E - Fixed Constructions

21

B

166/65, 18/965

E21B 33/126 (2006.01) E21B 33/127 (2006.01) F16J 15/46 (2006.01)

Patent

CA 1219205

ABSTRACT An inflatable packer construction where the inflatable elastomer element is; (1) constructed from the same type of rubber compound from end-to-end and the rubber is cured differentially from end-to-end so that inflation is from one end to the other end; (2) is constructed of rubber having different charac- teristics from end-to-end so that the cured rubber will inflate from one end to the other end; (3) is constructed of rubber having a release agent between one end of the rubber and a mandrel so as to release one end of the rubber first from the mandrel upon inflation; (4) is constructed of rubber having dif- ferent thicknesses from end-to-end so that one end inflates sooner than the other end; or (5) is constructed of rubber with a segment of the length of the element having a releasable confining element.

463316

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