Set-delayed cement compositions comprising pumice and associated methods
First Claim
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1. A method of cementing in a subterranean formation comprising:
- providing a cement composition comprising water, pumice, hydrated lime, a set retarder, a dispersant, and a strength enhancer, wherein the strength enhancer comprises at least one material selected from the group consisting of cement kiln dust, slag, amorphous silica, a pozzolan, and any combination thereof, wherein the set retarder comprises a phosphonic acid derivative and the dispersant comprises a polycarboxylated ether dispersant;
introducing the cement composition into the subterranean formation; and
allowing the cement composition to set in the subterranean formation.
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Abstract
Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. An embodiment includes a method of cementing in a subterranean formation comprising: providing a cement composition comprising water, pumice, hydrated lime, a set retarder, and a strength enhancer, wherein the strength enhancer comprises at least one material selected from the group consisting of cement kiln dust, slag, amorphous silica, a pozzolan, and any combination thereof; introducing the cement composition into the subterranean formation; and allowing the cement composition to set in the subterranean formation.
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Citations
17 Claims
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1. A method of cementing in a subterranean formation comprising:
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providing a cement composition comprising water, pumice, hydrated lime, a set retarder, a dispersant, and a strength enhancer, wherein the strength enhancer comprises at least one material selected from the group consisting of cement kiln dust, slag, amorphous silica, a pozzolan, and any combination thereof, wherein the set retarder comprises a phosphonic acid derivative and the dispersant comprises a polycarboxylated ether dispersant; introducing the cement composition into the subterranean formation; and allowing the cement composition to set in the subterranean formation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cementing system comprising:
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a cement composition comprising; water, pumice, hydrated lime, a set retarder, a dispersant, and a strength enhancer, wherein the strength enhancer is selected from the group consisting of cement kiln dust, slag, amorphous silica, and a pozzolan; and a mixing equipment capable of mixing the cement composition; and pumping equipment capable of pumping the cement composition; wherein the set retarder comprises a phosphonic acid derivative and the dispersant comprises a polycarboxylated ether dispersant. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification