Methods of cementing pipe in well bores and low density...

Details Methods of cementing pipe in well bores and low density... Methods of cementing pipe in well bores and low density...

C - Chemistry, Metallurgy

09

K

C09K 8/46 (2006.01) C04B 7/02 (2006.01) C04B 20/10 (2006.01) C04B 28/02 (2006.01)

Patent

CA 2432979

The present invention provides methods of cementing pipe in well bores and low density cement compositions having enhanced compressive, tensile and bond strengths upon setting. The composition of the invention are basically comprised of a hydraulic cement, sufficient water to form a slurry and hollow glass microspheres surface treated with a mixture of organosilane coupling agents present in an amount sufficient to produce a cement composition density in the range of from about 6 to about 12 pounds per gallon.

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