Methods and compositions for use in cementing in cold environments
US6626243B1 · kind B1 · utility
147Cited by
49References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Aug 23, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/766
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cement compositions for cementing wellbores in cold environments. The cement compositions may include a mixture of a reactive aluminum silicate, aluminum sulfate and hydraulic cement, and may include one or more other additives. The cement compositions may be formulated to have reduced heat of hydration as compared to conventional cements, making them suited for cementing in permafrost environments. The cement slurries may optionally be foamed using a foaming agent and energizing phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.