Consolidated proppants having high mechanical strength and...

Details Consolidated proppants having high mechanical strength and... Consolidated proppants having high mechanical strength and...

C - Chemistry, Metallurgy

09

K

C09K 8/80 (2006.01)

Patent

CA 2648848

A method for production of hydrolytic and hydrothermally resistant consolidated proppants is disclosed, wherein (A) a consolidating agent, comprising (A1) a hydrolysate or precondensate of a least one functionalised organosilane, a further hydrolysable silane and at least one metal compound, the molar ratio of applied silicon compounds to applied metal compounds being in the range of 10,000:1 to 10:1 and (A2) an organic cross-linker are mixed with a proppant and (B) the consolidating agent hardens under elevated pressure and elevated temperature. The obtained consolidated proppants are characterised by a high mechanical stability.

La présente invention concerne un procédé pour préparer des agents de soutènement consolidés résistants d'un point de vue hydrolytique et hydrothermique, qui consiste à : (A) mélanger un agent de consolidation contenant (A1) un hydrolysat ou un précondensat d'au moins un organosilane fonctionnalisé, un autre silane hydrolysable, et au moins un composé métallique - le rapport molaire des composés de silicium employés par rapport aux composés métalliques employés valant de 10000:1 à 10:1 - et (A2) un agent de réticulation organique, avec un agent de soutènement; et (B) faire durcir l'agent de consolidation à pression et température élevées. Les agents de soutènement consolidés obtenus se caractérisent par une résistance mécanique élevée.

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