Consolidated proppants having high mechanical strength and process for the preparation thereof
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United States of America Patent
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Aug 23, 2011
Grant Date -
Oct 22, 2009
app pub date -
Apr 23, 2007
filing date -
Apr 24, 2006
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Abstract
A process for the preparation of hydrolytically and hydrothermally stable consolidated proppants is described, in which (A) a consolidating agent comprising (A1) a hydrolysate or precondensate of at least one functionalized organosilane, a further hydrolyzable silane and at least one metal compound, the molar ratio of silicon compounds used to metal compounds used being in the range of 10 000:1 to 10:1, and (A2) an organic crosslinking agent are mixed with a proppant and (B) the consolidating agent is cured at elevated pressure and elevated temperature.The consolidated proppants obtained have high mechanical strength.
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