High temperature well cement composition

Details High temperature well cement composition High temperature well cement composition

E - Fixed Constructions

21

B

31/26

E21B 33/138 (2006.01) C04B 24/38 (2006.01) C09K 8/42 (2006.01) C09K 8/46 (2006.01)

Patent

CA 1244640

HIGH TEMPERATURE WELL CEMENT COMPOSITION Abstract of Disclosure Disclosed is a cement composition having impaired set retardation times comprising a hydraulic cement, water, and a partially water-soluble hydroxyethylcellulose having a M.S. of 0.25 to 1.12, and an intrinsic viscosity in 5% sodium hydroxide at 25°C of from about 6.0 to about 9Ø The composition is useful cementing well casings in high temperature wells.

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