| 摘要 |
Method of completing a hydrocarbon containing formation located downhole in a cased borehole by running a jet perforating gun downhole on the end of a tubing string. The tool string includes a vent assembly underlying a packer and located above the gun. The gun includes a special flexible linkage and biasing means which urges the shaped charge chambers of the gun into close proximity of the borehole wall. Pairs of shaped charges are positioned within spaced chambers to intersect one another out in the formation, to thereby enable a cavity to be subsequently formed therebetween. Treatment fluid is pumped into the cavity and used to consolidate the formation. Another form of the invention provides a wireline actuated apparatus wherein pairs of shaped charges are oriented to penetrate the formation and form spaced apart parallel tunnels which subsequently collapse to jointly form an enlarged cavity located back up in the formation. In each of the embodiments one of the charge carriers is located in an isolated chamber, and an isolated flow path is established which extends from the borehole, into one tunnel, from the other tunnel, directly into the isolated chamber thereby producing a surge of flow across the two tunnels which enhance the formation of the enlarged cavity.
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