C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/508 (2006.01) C09K 8/512 (2006.01) C09K 8/514 (2006.01) C09K 8/588 (2006.01) C09K 8/60 (2006.01) C09K 8/68 (2006.01)
Patent
CA 2708805
A process to prepare a stable solution of a borozirconate complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging of permeable zones. The process comprises contacting zirconium complex with alkanolamine, then water and a hydroxyalkylene diamine, then with a boron compound. The solution is particularly suitable for use in a cross-linking composition in hydraulic fracturing and plugging of permeable zones of subterranean formations at temperatures of 275F (135C) and higher in the formation.
L'invention concerne un procédé de préparation d'une solution stable d'un complexe de borozirconate et l'utilisation de la solution dans des applications de champs pétroliers telles que la fracturation hydraulique et l'obturation de zones perméables. Le procédé comprend la mise en contact d'un complexe de zirconium avec une alcanolamine, puis avec de l'eau et une hydroxyalkylène diamine, ensuite avec un composé de bore. La solution est particulièrement appropriée pour une utilisation dans une composition de réticulation dans la fracturation hydraulique et l'obturation de zones perméables de formations souterraines à des températures de 275 °F (135 °C) et plus dans la formation.
Deeth Williams Wall Llp
Dorf Ketal Speciality Catalyst Llc
E.i. Du Pont de Nemours And Company
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