High density jet perforating casing gun

Details High density jet perforating casing gun High density jet perforating casing gun

1977-10-17

1979-02-20

Purser, Ernest R.

Boring or penetrating the earth

Boring with explosion in inaccessible hole

With position orienting or indicating

175 455, 175 46, 166 63, E21B 43116

Patent

active

041401883

ABSTRACT:
A high density perforating gun having series connected multiple gun housings within which a plurality of jet perforating shaped charges are arranged in spaced apart clusters. The charges of each cluster are captured in radially spaced apart symmetrical relationship within a mounting assembly, and each housing includes a plurality of the mounting assemblies which are spaced vertically apart from one another. The charges contained within each mounting assembly are orientated respective to the charges of the remaining mounting assemblies so that any charge located in one mounting assembly is spaced apart both radially and vertically from the nearest adjacent charge of an adjacent mounting assembly. This arrangement permits a maximum number of shaped charges to be placed within a finite volume. All of the charges contained within one housing are simultaneously detonated. The explosive force resulting from a plurality of shaped charges arranged in the above high density manner brings about the unexpected benefit of a more desirable and predetermined perforating pattern distribution as well as achieving deeper penetration into the pay zone while at the same time avoiding misfire of the individual shaped charges.

REFERENCES:
patent: 2821136 (1958-01-01), Castel
patent: 2873676 (1959-02-01), Caldwell
patent: 3565188 (1971-02-01), Hakala

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