Cement compositions comprising sub-micron alumina and associated methods
First Claim
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1. A cement composition comprising:
- hydraulic cement, wherein the hydraulic cement is free of fly ash;
sub-micron particles consisting of alumina, which are a separate component from the hydraulic cement, wherein the sub-micron particles have a particle size in a range of from about 150 nm to about 950 nm, and wherein the sub-micron particles are present in an amount in a range of from 0.1% to about 10% by weight of the hydraulic cement on a dry basis;
latex, wherein the latex comprises at least one material selected from the group consisting of an ethylene-propylene rubber, a styrene-butadiene rubber, a nitrile rubber, a nitrile butadiene rubber, a butyl rubber, a neoprene rubber, a polybutadiene rubber, an acrylonitrile-styrene-butadiene rubber, a polyisoprene rubber, an AMPS-styrene-butadiene rubber, and any combination thereof; and
water, in an amount in the range of about 33% to about 200% by weight of the hydraulic cement.
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Abstract
Methods and compositions that comprise sub-micron alumina for accelerating setting of a cement composition. An embodiment includes a method of cementing in a subterranean formation. The method may comprise introducing a cement composition into the subterranean formation, wherein the cement composition comprises hydraulic cement, sub-micron alumina, and water. The method further may comprise allowing the cement composition to set in the subterranean formation. Another embodiment includes a cement composition that may comprise hydraulic cement, sub-micron alumina, and water.
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Citations
27 Claims
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1. A cement composition comprising:
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hydraulic cement, wherein the hydraulic cement is free of fly ash; sub-micron particles consisting of alumina, which are a separate component from the hydraulic cement, wherein the sub-micron particles have a particle size in a range of from about 150 nm to about 950 nm, and wherein the sub-micron particles are present in an amount in a range of from 0.1% to about 10% by weight of the hydraulic cement on a dry basis; latex, wherein the latex comprises at least one material selected from the group consisting of an ethylene-propylene rubber, a styrene-butadiene rubber, a nitrile rubber, a nitrile butadiene rubber, a butyl rubber, a neoprene rubber, a polybutadiene rubber, an acrylonitrile-styrene-butadiene rubber, a polyisoprene rubber, an AMPS-styrene-butadiene rubber, and any combination thereof; and water, in an amount in the range of about 33% to about 200% by weight of the hydraulic cement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cement composition comprising:
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hydraulic cement selected from the group consisting of a Portland cement, a pozzolana cement, a gypsum cement, a high-alumina-content cement, a slag cement, a silica/lime cement, and any combination thereof; and
wherein the hydraulic cement is free of fly ash;sub-micron particles consisting of alumina and having a particle size in a range of about 150 nm to about 950 nm, wherein the sub-micron alumina particles are present in an amount in a range of from about 0.1% to about 10% by weight of the hydraulic cement on a dry basis; and
wherein the sub-micron alumina particles are a separate component from the hydraulic cement;latex, wherein the latex comprises at least one material selected from the group consisting of an ethylene-propylene rubber, a styrene-butadiene rubber, a nitrile rubber, a nitrile butadiene rubber, a butyl rubber, a neoprene rubber, a polybutadiene rubber, an acrylonitrile-styrene-butadiene rubber, a polyisoprene rubber, an AMPS-styrene-butadiene rubber, and any combination thereof; and water, in an amount in the range of about 35% to about 70% by weight of the hydraulic cement. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A cement composition comprising:
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hydraulic cement, wherein the hydraulic cement is free of fly ash; sub-micron particles consisting of alumina, which are a separate component from the hydraulic cement, wherein the sub-micron particles have a particle size in a range of from about 150 nm to about 950 nm, and wherein the sub-micron particles are present in an amount in a range of from 0.1% to about 10% by weight of the hydraulic cement on a dry basis; latex in an amount of about 2% to about 45% by weight of the cement on a dry basis;
wherein the latex comprises at least one material selected from the group consisting of an ethylene-propylene rubber, a styrene-butadiene rubber, a nitrile rubber, a nitrile butadiene rubber, a butyl rubber, a neoprene rubber, a polybutadiene rubber, an acrylonitrile-styrene-butadiene rubber, a polyisoprene rubber, an AMPS-styrene-butadiene rubber, and any combination thereof; andwater, in an amount in the range of about 33% to about 200% by weight of the hydraulic cement. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification