The present invention provides settable compositions that comprise water and cement kiln dust. The settable compositions optionally may comprise an additive that comprises at least one of the following group: fly ash; shale; slag cement; zeolite; metakaolin; and combinations thereof. The settable co
The present invention provides settable compositions that comprise water and cement kiln dust. The settable compositions optionally may comprise an additive that comprises at least one of the following group: fly ash; shale; slag cement; zeolite; metakaolin; and combinations thereof. The settable compositions optionally may be foamed with a gas. Methods of cementing also are provided that comprise: providing the settable composition; introducing the settable composition into a location to be cemented; and allowing the settable composition to set therein. The location to be cemented may be above ground or in a subterranean formation.
대표청구항▼
What is claimed is: 1. A foamed settable composition comprising: cement kiln dust present in an amount in the range of from 70% to 100% by weight of dry components; water; a gas; and a surfactant. 2. The foamed settable composition of claim 1 wherein the water is selected from the group consisti
What is claimed is: 1. A foamed settable composition comprising: cement kiln dust present in an amount in the range of from 70% to 100% by weight of dry components; water; a gas; and a surfactant. 2. The foamed settable composition of claim 1 wherein the water is selected from the group consisting of: freshwater; saltwater; a brine; seawater; and combinations thereof. 3. The foamed settable composition of claim 1 wherein the cement kiln dust is present in the foamed settable composition in an amount in the range of from about 75% to 100% by weight of dry components. 4. The foamed settable composition of claim 1 wherein the foamed settable composition further comprises a hydraulic cement. 5. The foamed settable composition of claim 4 wherein the hydraulic cement comprises at least one 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 cement; and combinations thereof. 6. The foamed settable composition of claim 1 wherein the hydraulic cement is present in the foamed settable composition in an amount in the range of from 0% to 30% by weight of dry components. 7. The foamed settable composition of claim 1 wherein the foamed settable composition further comprises at least one additive selected from the group consisting of: fly ash; shale; zeolite; slag cement; metakaolin; and combinations thereof. 8. The foamed settable composition of claim 1 wherein the gas comprises at least one member selected from the group consisting of: air; nitrogen; and combinations thereof. 9. The foamed settable composition of claim 1 wherein the gas is present in the foamed settable composition in an amount in the range of from about 10% to about 80% by volume of the foamed cement composition. 10. The foamed settable composition of claim 1 wherein the surfactant comprises a foaming and stabilizing surfactant composition. 11. The foamed settable composition of claim 10 wherein the foaming and stabilizing surfactant composition comprises at least one surfactant selected from the group consisting of: a mixture of an ammonium salt of an alkyl ether sulfate, a cocoamidopropyl betaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride, and water; a mixture of an ammonium salt of an alkyl ether sulfate surfactant, a cocoamidopropyl hydroxysultaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride, and water; a hydrolyzed keratin; a mixture of an ethoxylated alcohol ether sulfate surfactant, an alkyl or alkene amidopropyl betaine surfactant, and an alkyl or alkene dimethylamine oxide surfactant; an aqueous solution of an alpha-olefinic sulfonate surfactant and a betaine surfactant; and combinations thereof. 12. The foamed settable composition of claim 1 wherein the foamed settable composition further comprises at least one additive selected from the group consisting of: a set retarding additive; an accelerator; a lost circulation material; a filtration control additive; and combinations thereof. 13. A foamed settable composition consisting of: cement kiln dust; water; gas; and surfactant. 14. The foamed settable composition of claim 13 wherein the water is selected from the group consisting of freshwater, saltwater, a brine, seawater, and combinations thereof. 15. The foamed settable composition of claim 13 wherein the gas is selected from the group consisting of air, nitrogen, and combinations thereof. 16. The foamed settable composition of claim 13 where the surfactant is selected from the group consisting of a mixture of an ammonium salt of an alkyl ether sulfate, a cocoamidopropyl betaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride, and water; a mixture of an ammonium salt of an alkyl ether sulfate surfactant, a cocoamidopropyl hydroxysultaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride, and water; a hydrolyzed keratin; a mixture of an ethoxylated alcohol ether sulfate surfactant, an alkyl or alkene amidopropyl betaine surfactant, and an alkyl or alkene dimethylamine oxide surfactant; an aqueous solution of an alpha-olefinic sulfonate surfactant and a betaine surfactant; and combinations thereof. 17. A foamed settable composition consisting of: hydraulic cement selected from the group consisting of a Portland cement, a pozzolana cement, a gypsum cement, a high alumina cement, a slag cement, a silica cement, and combinations thereof; cement kiln dust; water; gas; and surfactant. 18. The foamed settable composition of claim 17 wherein the water is selected from the group consisting of freshwater, saltwater, a brine, seawater, and combinations thereof. 19. The foamed settable composition of claim 17 wherein the cement kiln dust is present in the foamed settable composition in an amount in the range of from about 5% to 100% of the combined weight of the cement kiln dust and the hydraulic cement. 20. The foamed settable composition of claim 17 wherein the cement kiln dust is present in the foamed settable composition in an amount in the range of from about 75% to 100% of the combined weight of the cement kiln dust and the hydraulic cement. 21. The foamed settable composition of claim 17 wherein the gas is selected from the group consisting of air, nitrogen, and combinations thereof. 22. The foamed settable composition of claim 17 where the surfactant is selected from the group consisting of a mixture of an ammonium salt of an alkyl ether sulfate, a cocoamidopropyl betaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride, and water; a mixture of an ammonium salt of an alkyl ether sulfate surfactant, a cocoamidopropyl hydroxysultaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride, and water; a hydrolyzed keratin; a mixture of an ethoxylated alcohol ether sulfate surfactant, an alkyl or alkene amidopropyl betaine surfactant, and an alkyl or alkene dimethylamine oxide surfactant; an aqueous solution of an alpha-olefinic sulfonate surfactant and a betaine surfactant; and combinations thereof. 23. A foamed settable composition consisting of: hydraulic cement selected from the group consisting of a Portland cement, a pozzolana cement, a gypsum cement, a high alumina cement, a slag cement, a silica cement, and combinations thereof; cement kiln dust; water; gas; surfactant; and at least one additive selected from the group consisting of a set retarding additive, an accelerator, a lost circulation material, a filtration control additive, and combinations thereof. 24. The foamed settable composition of claim 23 wherein the water is selected from the group consisting of freshwater, saltwater, a brine, seawater, and combinations thereof. 25. The foamed settable composition of claim 23 wherein the cement kiln dust is present in the foamed settable composition in an amount in the range of from about 5% to 100% by weight of dry components. 26. The foamed settable composition of claim 23 wherein the cement kiln dust is present in the foamed settable composition in an amount in the range of from about 75% to 100% by weight of dry components. 27. The foamed settable composition of claim 23 wherein the gas is selected from the group consisting of air, nitrogen, and combinations thereof. 28. The foamed settable composition of claim 23 where the surfactant is selected from the group consisting of a mixture of an ammonium salt of an alkyl ether sulfate, a cocoamidopropyl betaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride, and water; a mixture of an ammonium salt of an alkyl ether sulfate surfactant, a cocoamidopropyl hydroxysultaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride, and water; a hydrolyzed keratin; a mixture of an ethoxylated alcohol ether sulfate surfactant, an alkyl or alkene amidopropyl betaine surfactant, and an alkyl or alkene dimethylamine oxide surfactant; an aqueous solution of an alpha-olefinic sulfonate surfactant and a betaine surfactant; and combinations thereof.
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