Modular time delay for actuating wellbore devices and methods for using same
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United States of America Patent
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May 25, 2010
Grant Date -
Oct 9, 2008
app pub date -
Apr 3, 2008
filing date -
Apr 4, 2007
priority date (Note) -
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Abstract
An apparatus for controlling a wellbore energy train may include a firing head, a detonator cord associated with the firing head, and a plurality of serially aligned modules. Each module may include an enclosure, a first portion of a high order detonation material positioned at one end of the enclosure, a second portion of the high order detonation material positioned at the other end of the enclosure, and a low order detonation material interposed between the first portion and the second portion. A method for controlling an energy train generated in a wellbore may include serially aligning a plurality of the modules along the path of the energy train, and detonating at least one of the plurality of modules by detonating a detonator cord.
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