Stable well cementing methods and compositions

Details Stable well cementing methods and compositions Stable well cementing methods and compositions

E - Fixed Constructions

21

B

E21B 33/13 (2006.01) C04B 7/00 (2006.01) C04B 7/02 (2006.01) C04B 24/26 (2006.01) C04B 28/02 (2006.01) C09K 8/46 (2006.01)

Patent

CA 2432875

The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well cement compositions are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, an aqueous hydrogenated styrene- butadiene rubber latex and a latex stabilizer present in an amount sufficient to stabilize the hydrogenated styrene- butadiene latex.

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