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.
Type:
Grant
Filed:
April 23, 2007
Date of Patent:
August 23, 2011
Assignee:
Kraiburg Geotech GmbH
Inventors:
Andreas Altherr, Klaus Endres, Bernd Reinhard, Helmut Schmidt
Abstract: A process is described for preparing hydrolytically and hydrothermally stable, consolidated proppants, in which (A) a consolidant comprising a hydrolyzate or precondensate of at least one organosilane, a further hydrolyzable silane and at least one metal compound, where the molar ratio of silicon compounds used to metal compounds used is in the range from 10 000:1 to 10:1, is blended with a proppant or infiltrated or injected into the geological formation, and (B) the consolidant is cured under conditions of elevated pressure and elevated temperature.
Type:
Application
Filed:
January 19, 2006
Publication date:
May 1, 2008
Applicant:
KRAIBURG GEOTECH GMBH
Inventors:
Helmut Schmidt, Bernd Reinhard, Klaus Endres, Jens Adam