Method of preparing a light weight cement composition from sea water
First Claim
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1. A method of preparing a cement composition having a density of from about 11.0 to about 16.0 pounds per gallon comprising:
- (a) adding to sea water a hydroxide compound selected from the group consisting of an alkali metal hydroxide, ammonium hydroxide and mixtures thereof said hydroxide compound being present in the range of about 0.2 percent to about 2.0 percent by weight of sea water;
(b) adding to the mixture of step (a) a silicate compound selected from the group consisting of an aqueous alkali metal silicate, an aqueous ammonium silicate and mixtures thereof; and
(c) adding to the mixture of step (b) a hydraulic cement;
wherein said sea water is present in the range of from about 42 percent to about 190 percent by weight of hydraulic cement and said silicate compound is present in the range of from about 0.40 percent to about 3.40 percent by weight of hydraulic cement.
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Abstract
A method of preparing a light weight cement composition from sea water. The light weight cement composition is prepared by adding a hydroxide compound to sea water and subsequently adding a hydraulic cement and silicate compound to the sea water. Optionally, a mixture of hydroxide compound and silicate compound may be formed and this mixture can be added to the sea water prior to the addition of hydraulic cement.
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Citations
20 Claims
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1. A method of preparing a cement composition having a density of from about 11.0 to about 16.0 pounds per gallon comprising:
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(a) adding to sea water a hydroxide compound selected from the group consisting of an alkali metal hydroxide, ammonium hydroxide and mixtures thereof said hydroxide compound being present in the range of about 0.2 percent to about 2.0 percent by weight of sea water; (b) adding to the mixture of step (a) a silicate compound selected from the group consisting of an aqueous alkali metal silicate, an aqueous ammonium silicate and mixtures thereof; and (c) adding to the mixture of step (b) a hydraulic cement; wherein said sea water is present in the range of from about 42 percent to about 190 percent by weight of hydraulic cement and said silicate compound is present in the range of from about 0.40 percent to about 3.40 percent by weight of hydraulic cement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of preparing a cement slurry having a density of from about 11 to about 16 pounds per gallon from sea water comprising:
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(a) forming a mixture of a hydroxide compound selected from the group consisting of an alkali metal hydroxide, ammonium hydroxide, calcium hydroxide, and mixtures thereof and a silicate compound selected from the group consisting of an aqueous alkali metal silicate, an aqueous ammonium silicate and mixtures thereof; (b) adding the mixture of step (a) to sea water; and
,(c) add a hydraulic cement to the mixture of step (b);
wherein said hydroxide is present in the range of from about 0.2 percent to about 2.0 percent by weight of sea water, said sea water is present in the range of from about 42 percent to about 190 percent by weight of hydraulic cement and said silicate compound is present in the range of about 0.40 percent to about 3.40 percent by weight of hydraulic cement. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification