Methods of generating gas in well treating fluids
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United States of America Patent
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Apr 20, 2004
Grant Date -
Dec 4, 2003
app pub date -
May 31, 2002
filing date -
May 31, 2002
priority date (Note) -
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Abstract
Improved methods of generating gas in and foaming well treating fluids introduced into a subterranean zone are provided. A method of the invention includes the steps of combining one or more gas generating chemicals with the well treating fluid and combining one or more delayed encapsulated activators having selected release times with the well treating fluid containing the gas generating chemicals so that the gas generating chemicals react with the delayed encapsulated oxidizing agent activators and gas and foam are formed in the treating fluid while the treating fluid is being pumped and after being placed in the subterranean zone.
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