Fluid loss control agents and compositions for cementing oil...

Details Fluid loss control agents and compositions for cementing oil... Fluid loss control agents and compositions for cementing oil...

C - Chemistry, Metallurgy

04

B

C04B 24/26 (2006.01) C04B 24/16 (2006.01) C04B 28/02 (2006.01) C09K 8/46 (2006.01)

Patent

CA 2279955

The present invention concerns a fluid loss control agent for a petroleum industry (or analogous) cement slurry, comprising a surfactant and a micro-gel obtained by chemical cross-linking of a polyvinyl alcohol. The micro-gel and the surfactant are advantageously compatible with a wide range of petroleum industry cement additives and can also produce compositions which are gas tight.

La présente invention concerne un agent de lutte contre les pertes de fluide pour un laitier de ciment (ou analogue) commun à l'industrie pétrolière comprenant un agent tensioactif et un microgel obtenu par réticulation d'un alcool polyvinylique. Le micro-gel et l'agent tensioactif, qui sont de préférence compatibles avec une large gamme d'additifs de ciment communs à l'industrie pétrolière, permettent également de produire des compositions imperméables au gaz.

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