Stress rings for inflatable packers

Details Stress rings for inflatable packers Stress rings for inflatable packers

E - Fixed Constructions

21

B

E21B 33/127 (2006.01)

Patent

CA 2130959

An inflatable packer for use in a well includes a tubular mandrel, an inner elastomer sleeve on the mandrel, armor surrounding the inner sleeve, and an outer elastomer sleeve member that covers at least a portion of the armor. Stress rings are mounted on end portions of the armor are made from a metal plate which has been highly cold-worked in both its longitudinal and transverse directions to provide optimum strength characteristics against stresses imposed thereon when the packer is inflated.

Une garniture gonflable destinée à être utilisée dans un puits comprend un mandrin tubulaire, un manchon intérieur en élastomère sur le mandrin, un blindage entourant le manchon intérieur et un élément de manchon extérieur en élastomère couvrant au moins une partie du blindage. Des anneaux de force sont montés sur les parties d'extrémité du blindage et sont fabriqués à partir d'une plaque métallique qui a été intensivement travaillée à froid dans l'axe longitudinal et dans l'axe transversal afin d'obtenir une résistance optimale aux contraintes qui leur sont imposées lorsque la garniture est gonflée.

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