Foamed fly ash cement compositions and methods of cementing
US7413014B2 · kind B2 · utility
31Cited by
31References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2003 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Jul 15, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/01
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods of cementing and low density foamed cement compositions therefor are disclosed. A low density foamed cement composition of the invention comprises fly ash comprising calcium oxide or calcium hydroxide, water present in an amount sufficient to form a slurry, a foaming and foam stabilizing surfactant or a mixture of surfactants present in an amount sufficient to facilitate foam and stabilize the foamed cement composition, and sufficient gas to foam the foamed cement composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.