Hydraulically actuated fishing tool

Details Hydraulically actuated fishing tool Hydraulically actuated fishing tool

E - Fixed Constructions

21

B

E21B 31/12 (2006.01) E21B 23/04 (2006.01) E21B 31/18 (2006.01) E21B 31/20 (2006.01)

Patent

CA 2162942

A fishing tool is disclosed which is responsive to hydraulic pressure to move away support for collets to allow the collects to deflect and make contact with the stuck object. Upon removal of the hydraulic force, the support for the collets is returned, preferably by a biasing spring, to its original position to lend support for the collets while the collets have engaged the stuck object. The object can then be retrieved to the surface. Application of further hydraulic force while the object engaged releases the support for the collects which allows the collets to disengage from the object. The process can be repeated to obtain successive releases and engagements with the stuck object without taking the fishing tool out of the wellbore.

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