Liner valve with externally mounted perforation charges

Details Liner valve with externally mounted perforation charges Liner valve with externally mounted perforation charges

1994-11-08

1997-08-26

Dang, Hoang C.

Wells

Processes

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

166 551, 1662421, 166317, 166369, E21B 43116, E21B 3406

Patent

active

056602324

ABSTRACT:
The apparatus and method of the present invention involve a casing or liner component that has a sliding sleeve operable therein. A plurality of ports are plugged off externally to the liner. A series of perforating charges are aligned adjacent the plugs extending from the ports which they plug. The charges may be set off hydraulically with the valve within the liner in the open or closed position, depending on the configuration. The perforating charges may be oriented differently with respect to each other to increase the zone of perforation of the formation. The plugs and charges can be distributed in such a manner as to obtain significant coverage of perforations for the zone in question.

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patent: 4991654 (1991-02-01), Brandell et al.
A. Damgaard, et al., A Unique Method for Perforating, Fracturing and Completing Horizontal Wells, Society of Petroleum Engineers, SPE No. 19282, 1989.

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