Inflatable packer release device

Details Inflatable packer release device Inflatable packer release device

E - Fixed Constructions

21

B

166/65

E21B 33/126 (2006.01) E21B 33/124 (2006.01)

Patent

CA 1221624

ABSTRACT A release system, for use with inflatable packer elements forming part of a drill stem tester, comprises a hydraulically operated piston and adaptor assembly to inflate and deflate the packer elements. The initial flow of inflation fluid into the assembly causes the piston to move upward, aligning conduit means in the piston with conduit means in the adaptor. A valve permits passage of the inflation fluid to the packer elements through the conduit means in the piston when the conduit means in the piston are in alignment with the conduit means in the adaptor. An increase in the pressure of the inflation fluid surrounding the piston causes a second valve in the adaptor to open, thereby allowing the piston to move downward and the pressure fluid from the packer elements to flow to the well bore.

503513

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