Methods of cementing pipe in well bores and low density cement compositions therefor
First Claim
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1. A cement composition comprising:
- 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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Abstract
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.
34 Citations
21 Claims
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1. A cement composition comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A cement composition comprising:
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a hydraulic cement; sufficient water to form a slurry; 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; a gas present in an amount sufficient to form said cement composition; and a mixture of foaming and foam stabilizing surfactants. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification