Cement composition for carbon dioxide supercritical environment
US8091642B2 · kind B2 · utility
2Cited by
2References
14Claims
0Family size
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Key dates
| Filing date | Sep 25, 2006 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Nov 5, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cement composition resistant to carbon dioxide includes a hollow element for trapping carbonation products. The hollow element can be hollow spherical or quasi spherical particles including cenospheres, sodium-calcium-borosilicate glass microspheres, silica-alumina microspheres, or a combination thereof. Or the hollow element may be a spherical or quasi spherical void made in the set cement, for example by foaming the cement composition with a gas such as air, nitrogen or a combination thereof. The composition may be used to cement a subterranean well in which carbon dioxide is injected, stored or produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.