Perforating method

Details Perforating method Perforating method

2007-08-28

2007-08-28

Gay, Jennifer H (Department: 3672)

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

C166S402000, C166S403000

Reexamination Certificate

active

11160223

ABSTRACT:
A method for perforating a wellbore comprises placing a perforating device in a cased wellbore that passes through a subterranean formation. The perforating device comprises at least one explosive perforating charge that can be detonated in order to perforate the casing and allow the formation fluids to enter the wellbore. A perforating fluid is placed in the wellbore between the perforating device and the casing. The ratio of the critical temperature of the perforating fluid in ° K and the temperature of the subterranean formation adjacent to the casing in ° K is between about 1.0-1.3. When the at least one explosive charge in the perforating device is detonated, at least one perforation is formed in the casing, and at least a portion of the perforating fluid is forced into the subterranean formation.

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