Salt water cement slurries and water loss reducing additives therefor
US4455169A · kind A · utility
21Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Jun 19, 1984 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B11/193
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Salt water cement slurries having low water loss when in contact with water permeable earth formations and additives for reducing water loss from salt water cement slurries are provided. The additives are comprised of very low molecular weight carboxymethylhydroxyethylcellulose polymers. Methods of using the additives are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.