High temperature well cement compositions and methods

Details High temperature well cement compositions and methods High temperature well cement compositions and methods

C - Chemistry, Metallurgy

04

B

C04B 24/10 (2006.01) C04B 22/08 (2006.01) C04B 24/16 (2006.01) C04B 24/26 (2006.01) C04B 24/38 (2006.01) C04B 28/02 (2006.01) C09K 8/46 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2079044

Abstract of the Disclosure Improved set retarded cement compositions and methods of using such compositions which are substantially non-thinning at high temperatures and which can include fresh or salt water are provided. The compositions are comprised of hydraulic cement, sufficient water to form a pumpable slurry, a set retarder and a delayed viscosifying agent which yields viscosity at high temperatures comprised of a treated depolymerized galactomannan gum.

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