Air chamber actuated dual tubing release assembly

Details Air chamber actuated dual tubing release assembly Air chamber actuated dual tubing release assembly

E - Fixed Constructions

21

B

166/59

E21B 17/06 (2006.01) E21B 17/18 (2006.01) E21B 23/04 (2006.01) E21B 43/116 (2006.01)

Patent

CA 1289466

ABSTRACT An apparatus and method of operation for the release of concentric tubing strings used in well opera- tions. In the preferred embodiment, the apparatus includes a tubing release assembly and an air chamber assembly as an actuating tool. The tubing release assembly comprises a housing, release sleeve, adjustment nut, pull tube mandrel, pull tube adapter, pull tube latch and retainer ring. The air chamber assembly as an actuating tool comprises a lower end plug, a housing, a housing retainer, seal element assembly, upper and lower shear pin retainers, upper element cone, release ring, setting mandrel, upper end plug, retrieving mandrel, and match drill assembly. Alternately, the tubing release assembly may be actuated by a ball and increased fluid pressure level within the interior of the tubing release assembly.

547048

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