Use of methylhydroxyethyl cellulose as cement additive
US8689870B2 · kind B2 · utility
6Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2011 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | May 23, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/493
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methylhydroxyethyl cellulose may be used as an additive in cement slurries in the treatment of wells to prevent or reduce the occurrence of gas channeling. In addition to acting as a gas control additive, methylhydroxyethyl cellulose controls fluid loss, minimizes free fluid and stabilizes foam during cementing of the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.