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US 4,643,097 AGranted
Shaped charge perforating apparatus
AssigneeDresser Industries, Inc.
InventorsManmohan S. Chawla, William A. McPhee
Life of this patent
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Abstract
A shaped charge perforating unit includes a housing having a cavity formed therein. An explosive charge of high explosive material is retained within the cavity by a liner of non-explosive material. The exterior of the housing is substantially surrounded by a porous jacket of high strength fiber material.
Claims6
An explosive shaped charge comprising:
- a housing having a forwardly opening cavity formed therein;
- a quantity of explosive material within said cavity;
- a liner cooperatively arranged to retain said explosive material in said cavity;
- and
- a jacket of fiber material substantially surrounding said housing.
2 more elements
An explosive shaped charge unit for use in perforating subsurface earth formations comprising:
- a hollow charge casing;
- a shaped charge liner;
- an explosive charge material coaxially disposed between said charge casing and said charge liner;
- and
- at least one layer of high temperature, high strength textile fiber material substantially surrounding said charge casing.
2 more elements
Dependencies are inferred from the claim text.