Cementing subterranean zones using cement compositions...

Details Cementing subterranean zones using cement compositions... Cementing subterranean zones using cement compositions...

C - Chemistry, Metallurgy

09

K

C09K 8/487 (2006.01) C04B 7/00 (2006.01) C04B 7/02 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2431857

Methods of cementing subterranean zones using cement compositions containing biodegradable dispersants are provided. The methods are basically comprised of the steps of preparing a hydraulic cement, a biodegradable dispersant comprised of polyaspartic acid containing side chains formed by reacting one or more side chain chemicals with said polyaspartic acid and sufficient water to form a pumpable slurry, placing the cement composition into a zone to be cemented and allowing the cement composition to set into an impermeable solid mass therein.

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