Cement compositions with improved corrosion resistance and methods of cementing in subterranean formations
AssigneeHalliburton Energy Services, Inc.
InventorsLance E. Brothers, William J. Caveny
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Abstract
This invention provides cement compositions that comprise a high alumina cement, vitrified shale, a soluble phosphate, and water sufficient to form a slurry. This invention also presents methods of enhancing the corrosion resistance of a cement composition that comprise the step of adding vitrified shale to the cement composition.
Claims62
A method of enhancing the corrosion resistance of a cement composition that comprises a high alumina cement and a soluble phosphate comprising the step of adding vitrified shale to the cement composition in an amount sufficient to provide an effective level of corrosion resistance.
A cement composition adapted for use in subterranean formations comprising a high alumina cement, water, vitrified shale and a soluble phosphate wherein the vitrified shale is present in the cement composition in an amount sufficient to provide an effective level of corrosion resistance.
Dependencies are inferred from the claim text.