Multi-cycle releasable connection

Details Multi-cycle releasable connection Multi-cycle releasable connection

E - Fixed Constructions

21

B

E21B 23/00 (2006.01) E21B 17/06 (2006.01)

Patent

CA 2220160

A releasable connection between the lower end of a panning string and a well tool that is subject to being stuck in a well includes inner and outer members movable telescopically between contracted and extended positions, a tension sleeve connecting the members in the contracted position and being disrupted by a predetermined pull to allow telescoping movement, a stop nut to limit such movement in the extended position of the members, and a mechanism responsive to a certain number of cycles of telescoping movement for disabling the stop nut to allow complete release and separation of the members.

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