Set retarded cement compositions and well cementing methods

E - Fixed Constructions – 21 – B

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E21B 33/138 (2006.01) C04B 24/40 (2006.01) C04B 28/02 (2006.01) C08K 5/00 (2006.01)

Patent

CA 1249713

Abstract of the Disclosure Set retarded cement compositions for cementing across a zone or zones in a well having enhanced compressive strength development after placement across the zone or zones are provided. The cement compositions are comprised of hydraulic cement, sufficient water to form a pumpable slurry, one or more set retarders and a delayed retarder neutralizer comprised of one or more titanium chelates. Methods of cementing utilizing the compositions are also provided.

494611

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