Method and apparatus to selectively reduce wellbore pressure during pumping operations
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United States of America Patent
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Oct 31, 2006
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app pub date -
Jan 19, 2004
filing date -
May 21, 2003
priority date (Note) -
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Abstract
A downhole tool has at least one diverter valve. The diverter valves are used to reduce pressure in a wellbore caused by frictional resistance to fluid flow during a gravel pack operation. The increased pressure tends to be created as the beta wave of a gravel pack operation makes its way up the wellbore.
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