Downhole perforation tool and method of subsurface fracturing
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United States of America Patent
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Jan 4, 2011
Grant Date -
Mar 27, 2008
app pub date -
Sep 7, 2007
filing date -
Sep 25, 2006
priority date (Note) -
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Abstract
A propellant assembly for subsurface fracturing and method for using the same are provided. The assembly can include a first tubular member having an annulus formed therethrough; a second tubular member at least partially disposed within the annulus of the first tubular member; one or more tubular propellants housed within the first tubular member, between an inner diameter of the first tubular member and an outer diameter of the second tubular member; and one or more detonating cords housed within the second tubular member, wherein the second tubular member has one or more portions thereof having a reduced wall thickness.
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