Cement compositions with improved corrosion resistance and methods of cementing in subterranean formations
US6904971B2 · kind B2 · utility
138Cited by
63References
26Claims
0Family size
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Key dates
| Filing date | Apr 24, 2003 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Sep 9, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cement compositions with improved corrosion resistance, and methods of using the compositions in a subterranean formation, are provided. The cement composition comprises a high alumina cement, vitrified shale, a soluble phosphate, and water sufficient to form a slurry. Optionally, other additives may be included, such as accelerants, retardants, dispersants, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.