Method and apparatus for perforating a well

Details Method and apparatus for perforating a well Method and apparatus for perforating a well

E - Fixed Constructions

21

B

166/11, 166/13

E21B 43/118 (2006.01) E21B 43/116 (2006.01) E21B 43/1185 (2006.01)

Patent

CA 1301633

ABSTRACT A method and apparatus for perforating a subsurface formation in a pumped well. An assembly is provided which facilitates both the support of a pump in a tool string and the convection of fluid, and pressures, around the pump in the tool string. A firing head associated with the perforating gun is actuated by a pressure differential between the tubing string bore and the wellbore annulus. This pressure differential is achieved by a downhole pump which pumps fluid out of the wellbore into the tubing string bore. HALO:011/C3

584843

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