Stable well cementing methods and compositions
US6516884B1 · kind B1 · utility
73Cited by
27References
22Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 23, 2002 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Jul 23, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/763
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well cement compositions are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, an aqueous hydrogenated styrene-butadiene rubber latex and a latex stabilizer present in an amount sufficient to stabilize the hydrogenated styrene-butadiene latex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.