Hydraulic running tool assembly and method of its use

Details Hydraulic running tool assembly and method of its use Hydraulic running tool assembly and method of its use

E - Fixed Constructions

21

B

E21B 23/01 (2006.01) E21B 23/10 (2006.01)

Patent

CA 2638731

An assembly for downhole equipment deployment comprising a liner hanger, means for attachment of the liner hanger to deployable equipment, a top sub insertable into the liner hanger and attachable to a tubing string, a lock piston releasably connectable to the top sub, lock pins insertable through the top sub, the liner hanger, and the lock piston, and means for remotely releasing the liner hanger and associated equipment from the top sub and the lock piston. A method of operating a running tool assembly for deploying downhole equipment from the surface, comprising assembling a liner hanger, top sub, lock piston, lock pins, shear screws and seals into a running tool assembly, attaching the assembly to a tubing string, inserting the assembly into a hole to a desired depth, and either: a) dropping an activation ball internal to the bore of the assembly; pumping hydraulic fluid into the annular bore of the assembly; allowing build up of pressure thereby overcoming the plurality of shear screws; releasing the liner hanger from the top sub; and retrieving the top sub assembly partition from the liner hanger out of the hole; or b) manipulation of the tubing string by means of left-hand rotation; release of the liner hanger from the top sub thereby overcoming the plurality of shear screws; and retrieving the top sub assembly partition from the liner hanger out of the hole.

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