Structure for gunpowder charge in combined fracturing perforation device
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United States of America Patent
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May 12, 2015
Grant Date -
Jun 13, 2013
app pub date -
Feb 5, 2013
filing date -
Nov 11, 2009
priority date (Note) -
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Abstract
This invention provides a structure for gunpowder charge for charging gunpowders of different rates in combined fracturing perforation devices. The structure for gunpowder charge is convenient to mount and transport. In one embodiment, said structure for gunpowder charge comprises an inner gunpowder box located between adjacent perforating charges in the charge frame of a perforation device, and an outer gunpowder box attached to the outer wall of the charge frame, wherein said outer gunpowder box comprises one or two box units (2 or 4) with at least one claw at the inner side of said box unit, said claw can be locked into a groove or installation hole of the charge frame, and wherein said inner gunpowder box and said outer gunpowder box are charged with gunpowders of different burning rates.
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