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US 4,466,831 AGranted
Rapidly dissolvable silicates and methods of using the same
AssigneeHalliburton Company
InventorJoseph R. Murphey
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Abstract
Rapidly dissolvable powdered silicates having a molar ratio of silicon dioxide to alkali metal oxide in the range of from about 1.5:1 to about 3.3:1 wherein the alkali metal is selected from the group consisting of sodium, potassium and mixtures thereof. Methods of using the powdered silicates and resulting solutions in connection with sealing and cementing, especially of well formations, are provided.
Claims5
A rapidly dissolvable partially hydrated powdered silicate comprising a mixture of sodium silicate and potassium silicate wherein:
- the molar ratio of silicon dioxide to sodium oxide in the sodium silicate is in the range of from about 1.5:1 to about 3.3:1;
- the molar ratio of silicon dioxide to potassium oxide in the potassium silicate is in the range of from about 1.5:1 to about 3.3:1;
- and
- said powdered silicate has a water content in the range of from about 14% to about 16% by weight of hydrated silicate.
1 more element
Dependencies are inferred from the claim text.