Perforating charge for use in a well
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United States of America Patent
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Jul 26, 2011
Grant Date -
Apr 21, 2011
app pub date -
Dec 21, 2010
filing date -
Nov 14, 2005
priority date (Note) -
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Abstract
A perforating charge for use in a wellbore includes an explosive and a liner to be collapsed by detonation of the explosive. The liner includes at least a first liner portion and a second liner portion which have different cohesiveness.
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