Method to reduce movement of a CPF device via a drag-reducing fl

Details Method to reduce movement of a CPF device via a drag-reducing fl Method to reduce movement of a CPF device via a drag-reducing fl

1989-12-29

1991-01-08

Suchfield, George A.

Wells

Processes

With explosion or breaking container to implode

166308, E21B 43263

Patent

active

049827910

ABSTRACT:
A method for minimizing damage to downhole equipment utilized in controlled pulse fracturing (CPF) where a drag reducing fluid tamp is used. Said tamp has a viscosity sufficient to reduce the flowing pressure drop thereby diminishing frictional forces along fluid/solid interfaces. The CPF device is submersed in said tamp. Upon ignition of a CPF device, the upwardly traveling pressure forces the tamp of drag-reducing characteristics to pass the downhole equipment thereby minimizing tool and equipment damage. Afterwards, the pressure is allowed to leak off slowly into the formation.

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patent: 4039030 (1977-08-01), Godfrey et al.
patent: 4530396 (1985-07-01), Mohaupt
patent: 4683951 (1987-08-01), Pathak et al.
patent: 4714114 (1987-12-01), Jones
patent: 4751966 (1988-06-01), Jones

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