Method and composition for cementing in a wellbore

Details Method and composition for cementing in a wellbore Method and composition for cementing in a wellbore

C - Chemistry, Metallurgy

04

B

166/17, 261/69

C04B 24/26 (2006.01) C04B 7/32 (2006.01) C04B 28/04 (2006.01) C09K 8/46 (2006.01)

Patent

CA 2022845

A method of cementing in a wellbore penetrating subterranean formations characterized by mixing a predetermined quantity of Portland Cement containing at least 2 percent by weight of tricalciun aluminate: at least 2 percent by weight of gypsum; and 0.3-2.0 percent by weight of polyvinyl alcohol with enough water to form a pumpable slurry; pumping the slurry to a desired location in the wellbore and allowing the slurry to harden to a solid mass. Also disclosed is the composition. These methods and composition provide a cementing that has many advantages and beneficial results as delineated in the specification.

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