Apparatus and methods for shaped charge tubing cutters
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United States of America Patent
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Aug 14, 2018
Grant Date -
Aug 20, 2015
app pub date -
May 4, 2015
filing date -
May 10, 2012
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Abstract
A shaped charge pipe cutter is constructed with the cutter explosive material packed intimately around an axially elongated void space that is continued through a heavy wall boss portion of the upper thrust disc. The boss wall is continued to within a critical initiation distance of a half-cuter junction plane. An explosive detonator is positioned along the void space axis proximate of the outer plane of the upper thrust disc. Geometric configurations of the charge thrust disc and end-plate concentrate the detonation energy at the critical initiation zone.
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