Perforating gun firing tool

Details Perforating gun firing tool Perforating gun firing tool

E - Fixed Constructions

21

B

166/13

E21B 43/116 (2006.01) E21B 23/00 (2006.01) E21B 34/10 (2006.01) E21B 43/1185 (2006.01) E21B 49/00 (2006.01) E21B 34/00 (2006.01)

Patent

CA 1303971

ABSTRACT A tool for activating the firing head of a perfo- rating gun located below a packer by applying pressure to the upper well annulus while maintaining an unimpeded bore between the perforating gun and the pipe string. The tool is provided with a flow valve to prevent flow through the flow bore when closed, and a circulation valve which permits fluid flow from the upper annulus into the flow bore when open and a means of switching the valves so that when one is open the other is closed. A method of using the tool to complete a well is also disclosed.

564604

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