Permanent completion tubing conveyed perforating system

Details Permanent completion tubing conveyed perforating system Permanent completion tubing conveyed perforating system

E - Fixed Constructions

21

B

166/10

E21B 43/11 (2006.01) E21B 43/116 (2006.01) E21B 43/1185 (2006.01)

Patent

CA 1240614

ABSTRACT OF THE DISCLOSURE A permanent completion tubing conveyed perforating (TCP) system including a firing head that responds to the difference between annulus and rathole pressure, has a floating piston seal that functions before the guns are dropped to communicate annulus pressure to a closed oil- filled pressure conduit system extending from the piston to the firing head. After the funs are dropped, the piston seals communication between the annulus and the production tubing bore.

496704

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