Method of acid fracturing a sandstone formation
US7704927B2 · kind B2 · utility
7Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2008 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Oct 29, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/72
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods and compositions useful in acidizing a subterranean formation with an oil-in-water emulsion that includes a sulfonate ester, a fluoride salt, a proppant, and water. The reaction of the ester and fluoride salt is delayed so that hydrofluoric acid is produced in-situ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.