Multi-cycle releasable connection

Details Multi-cycle releasable connection Multi-cycle releasable connection

1996-11-04

1999-01-12

Nicholson, Eric K.

Pipe joints or couplings

Frangible element

166178, 175321, 175301, F21B 43116

Patent

active

058577106

ABSTRACT:
A releasable connection between the lower end of a running 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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