Hydraulically-actuated propellant stimulation downhole tool

Details Hydraulically-actuated propellant stimulation downhole tool Hydraulically-actuated propellant stimulation downhole tool

E - Fixed Constructions

21

B

E21B 43/25 (2006.01) E21B 43/11 (2006.01) E21B 43/26 (2006.01)

Patent

CA 2693813

A hydraulically-actuated propellant stimulation downhole tool for hydrocarbon wells. According to one embodiment of the invention, the tool comprises a first section having an internal sidewall defining at least a portion of a flowpath, and a ported outer sidewall. A propellant volume having at least a portion within said first section. An annular portion has at least one pressure chamber having an end positioned adjacent to the propellant volume and an inlet providing a communication path to said flowpath. A detonator assembly is located within each pressure chamber proximal to the propellant volume such that detonation of the assembly causes detonation of the propellant volume. A firing pin is propelled toward the detonation assembly by providing communication between the pressure chamber and the flow path, causing a pressure differential between the pressure isolated ends of the firing pin.

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