In-situ polyphosphazene generation in cement for improved elastic properties
AssigneeSaudi Arabian Oil Company
InventorHasmukh A. Patel
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Abstract
A composition of matter may include a cement precursor, a phosphazene oligomer and water. A method may include blending a phosphazene oligomer and a cement precursor to form a cement precursor mixture. The method may then include introducing water into the cement precursor mixture to form the cement slurry. A composition of matter may include a cured cement matrix having a polyphosphazene polymer distributed throughout the cement matrix. A method may include cementing a wellbore by introducing a cement slurry into a wellbore, where the cement slurry includes a phosphazene oligomer. The method then includes maintaining the cement slurry such that a cured cement sheath forms, the cement sheath having a polyphosphazene polymer.
Claims19
A composition of matter comprising:
- a cement precursor;
- a cyclic phosphazene oligomer;
- and
- water,
- wherein the cyclic phosphazene oligomer is configured to undergo polymerization to form a polyphosphazene polymer upon curing of the cement precursor.
A method of making a cement slurry comprising:
- blending a phosphazene oligomer and a cement precursor to form a cement precursor mixture;
- introducing water into the cement precursor mixture to form the cement slurry;
- and
- polymerizing the cyclic phosphazene oligomer upon curing of the cement precursor, thereby forming a polyphosphazene polymer in a cement matrix.
Dependencies are inferred from the claim text.