System for fracturing wells using supplemental...

Details System for fracturing wells using supplemental... System for fracturing wells using supplemental...

E - Fixed Constructions

21

B

E21B 43/26 (2006.01)

Patent

CA 2416985

A system for fracturing wells uses a primary propellant charge to initially produce pressures within the well in excess of the maximum fracture extension pressure of the surrounding formation, but below that which would cause damage to the well. A supplemental propellant charge burns for a substantially longer period of time than the primary propellant charge, and thereby maintains pressures within the well in excess of the maximum fracture extension pressure for a significant period of time following completion of the primary propellant burn.

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