Protective shaped charge
United States Patent 3282354

Inventors:
Hakala, John R.
Holden, James R.
Publication Date:
11/01/1966
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Assignee:
HARRISON JET GUNS LTD
Primary Class:
175/4.600
Other Classes:
166/55
International Classes:
E21B43/117; E21B43/11
US Patent References:
2844098Apparatus for supporting explosive charges in jet type perforating guns
2849953Shaped charges adapted for use inside well casings
2916991Jet gun
2947252Shaped charge unit for well perforators