Apparatus and method for detonating well perforators

Details Apparatus and method for detonating well perforators Apparatus and method for detonating well perforators

1992-03-30

1992-12-01

Neuder, William P.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

175 454, 175 456, E21B 43116

Patent

active

051672820

ABSTRACT:
A pressure-actuated head for detonating a gun for perforating a well bore is suspended on a tubing string for lowering down the well. The head includes a detonator pin biased towards a detonator but restrained until detonation is required. Detonation is effected by causing or allowing a pressure differential to develop across a piston. Fluid communication between chambers on respective sides of the piston is via a pressure control system which allows the pressure differential to develop over a period of time.

REFERENCES:
patent: 4629001 (1986-12-01), Miller et al.
patent: 4650010 (1987-03-01), George et al.
patent: 4678044 (1987-07-01), Luke et al.
patent: 4770246 (1988-09-01), Ward
patent: 4924952 (1990-05-01), Schneider

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