Riser cutting tool
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United States of America Patent
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Aug 4, 2015
Grant Date -
Feb 12, 2015
app pub date -
Feb 20, 2013
filing date -
Feb 22, 2012
priority date (Note) -
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Abstract
A method of separating a riser, comprising providing a riser having an inner and an outer surface, a circumference of said outer surface, a longitudinal axis and a first end and a second end; radially surrounding said riser with an explosive shaped charge material, wherein said shaped charge explosive material is capable of generating a high-velocity plasma jet in response to an activation signal, and wherein said explosive material comprises an electrically conductive layer; transmitting said activation signal to said explosive material; generating said high-velocity plasma jet; and separating said riser into a first portion comprising said first end and a second portion comprising said second end when said high-velocity plasma jet penetrates said outer surface of said riser and exits said inner surface of said riser.
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