IMPROVEMENTS IN AND RELATING TO OIL WELL PERFORATORS
An oil and gas well shaped charge perforator is provided comprising a housing (2), a high explosive (3), and a liner (5) with a further insert liner (6) where the high explosive is positioned between the liner and the housing. In use the high explosive will collapse the liner and insert causing two...
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Format: | Patent |
Sprache: | eng ; fre |
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