Foamed well cement slurries, additives and methods

Details Foamed well cement slurries, additives and methods Foamed well cement slurries, additives and methods

C - Chemistry, Metallurgy

09

K

C09K 8/46 (2006.01) C04B 24/12 (2006.01) C04B 24/16 (2006.01) C04B 28/02 (2006.01) C04B 38/10 (2006.01) C04B 40/00 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2370718

The present invention provides improved foamed well cement slurries, additives and methods. The additives, which foam and stabilize a cement slurry containing fresh water or salt water, are basically comprised of a mixture of an ethoxylated alcohol ether sulfate surfactant, an alkyl or alkene amidopropyl betaine surfactant and an alkyl or alkene amidopropyl dimethyl amine oxide surfactant.

La présente invention concerne des formules améliorées de laitiers de ciment pétrolier en mousse, des additifs et des procédés. Les additifs, qui font mousser et qui stabilisent un laitier de ciment contenant de l'eau douce ou de l'eau salée, sont en général constitués d'un mélange d'un tensio-actif sulfaté d'éther d'alcool éthoxylé, d'un alkyle ou d'un tensio-actif amidopropylbétaïne d'alcène ou d'un tensio-actif aminoxide amidopropyldiméthyl d'alcène.

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