Geopolymer cement compositions and methods of use
First Claim
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1. A geopolymer cement composition comprising:
- a cementitious component consisting essentially of slag and pumice, wherein the slag is present in an amount in a range from about 40% to about 100% by weight of the cementitious component, wherein the pumice is present in an amount in a range from about 0.1% to about 60% by weight of the cementitious component;
a hydroxyl source; and
water;
wherein the geopolymer cement composition has a density in the range from about 14 lb/gal to about 20 lb/gal; and
wherein the geopolymer cement composition has a thickening time of greater than 2 hours at about 3,000 psi and temperatures in a range from about 50°
F. to about 400°
F.
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Abstract
Methods and compositions are provided that relate to cementing operations. Methods and compositions that include pumice in geopolymer cement compositions comprising slag.
46 Citations
11 Claims
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1. A geopolymer cement composition comprising:
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a cementitious component consisting essentially of slag and pumice, wherein the slag is present in an amount in a range from about 40% to about 100% by weight of the cementitious component, wherein the pumice is present in an amount in a range from about 0.1% to about 60% by weight of the cementitious component; a hydroxyl source; and water; wherein the geopolymer cement composition has a density in the range from about 14 lb/gal to about 20 lb/gal; and wherein the geopolymer cement composition has a thickening time of greater than 2 hours at about 3,000 psi and temperatures in a range from about 50°
F. to about 400°
F. - View Dependent Claims (2)
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3. A geopolymer cement composition comprising:
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a cementitious component consisting essentially of slag and pumice, wherein the slag is present in an amount in a range from about 40% to about 100% by weight of the cementitious component, wherein the pumice is present in an amount in a range from about 0.1% to about 60% by weight of the cementitious component; hydrated lime; an additive selected from the group consisting of crystalline silica, amorphous silica, fumed silica, a fiber, a hydratable clay, calcined shale, vitrified shale, a microsphere, diatomaceous earth, metakaolin, ground perlite, rice husk ash, zeolite, a resin, a dispersant, a defoaming agent, a set retarder, a weighting agent, a lightweight additive, a gas-generating additive, a lost-circulation material, a filtration-control additive, a fluid-loss-control additive, a foaming additive, a thixotropic additive, and any combination thereof; and water; wherein the geopolymer cement composition has a density in the range from about 14 lb/gal to about 20 lb/gal; and wherein the geopolymer cement composition has a thickening time of greater than 2 hours at about 3,000 psi and temperatures in a range from about 50°
F. to about 400°
F. - View Dependent Claims (4, 5)
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6. A geopolymer cement composition comprising:
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a cementitious component comprising slag and pumice, wherein the slag is present in an amount in a range from about 40% to about 100% by weight of the cementitious component, wherein the pumice is present in an amount in a range from about 0.1% to about 60% by weight of the cementitious component; water; hydrated lime; and an additive selected from the group consisting of crystalline silica, amorphous silica, fumed silica, a fiber, a hydratable clay, calcined shale, vitrified shale, a microsphere, diatomaceous earth, metakaolin, ground perlite, rice husk ash, zeolite, a resin, a dispersant, a defoaming agent, a set retarder, a weighting agent, a lightweight additive, a gas-generating additive, a lost-circulation material, a filtration-control additive, a fluid-loss-control additive, a foaming additive, a thixotropic additive, and any combination thereof; wherein the geopolymer cement composition has a density in the range from about 14 lb/gal to about 20 lb/gal; and wherein the geopolymer cement composition has a thickening time of greater than 2 hours at about 3,000 psi and temperatures in a range from about 50°
F. to about 400°
F. - View Dependent Claims (7, 8)
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9. A geopolymer cement composition comprising:
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a cementitious component consisting of slag in an amount in a range of from about 40% to about 60% by weight of the cementitious component and pumice in an amount in a range of from about 40% to about 60% by weight of the cementitious component, wherein the geopolymer cement composition is free of any additional cementitious component; hydrated lime in an amount in a range of from about 0.1% to about 20% by weight of the cementitious component; an additive selected from the group consisting of crystalline silica, amorphous silica, fumed silica, a fiber, a hydratable clay, calcined shale, vitrified shale, a microsphere, diatomaceous earth, metakaolin, ground perlite, rice husk ash, zeolite, a resin, a dispersant, a defoaming agent, a set retarder, a weighting agent, a lightweight additive, a gas-generating additive, a lost-circulation material, a filtration-control additive, a fluid-loss-control additive, a foaming additive, a thixotropic additive, and any combination thereof; and water; wherein the geopolymer cement composition has a density in the range from about 14 lb/gal to about 20 lb/gal; and wherein the geopolymer cement composition has a thickening time of greater than 2 hours at about 3,000 psi and temperatures in a range from about 50°
F. to about 400°
F. - View Dependent Claims (10, 11)
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Specification