Patent ID: 8033333
Filing Date: 2011-10-11
Classification: E21B,F42B,F42D

Abstract:
1. A downhole tool for subsurface fracturing, comprising: first and second propellant assemblies, each propellant assembly comprising: a male coupler having a first side and a second side, the second side being adapted to be received into the first end connector of either one of the first and second propellant assemblies; a female coupler having a first side and a second side, the second side being adapted to receive the second end connector of either one of the first and second propellant assemblies; and a transfer sub housing disposed between the first and second propellant assemblies, the transfer sub housing having first and second ends, wherein the first sides of the male and female couplers are adapted to couple to either of the first and second ends of the transfer sub housing.