Permanent completion tubing conveyed perforating system

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

1984-12-03

1987-01-06

Novosad, Stephen J.

Wells

Means for perforating, weakening, bending or separating pipe...

With disparate below ground feature

175 452, E21B 43112

Patent

active

046339450

ABSTRACT:
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 guns are dropped, the piston seals communication between the annulus and the production tubing bore.

REFERENCES:
patent: 2092337 (1937-09-01), Spencer
patent: 2330509 (1943-09-01), McCullough
patent: 3011551 (1961-12-01), Young et al.
patent: 3189094 (1965-06-01), Hyde
patent: 3530948 (1970-09-01), Garrett
patent: 3800705 (1974-04-01), Tampler
patent: 4531590 (1985-07-01), Peterson

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