Method of controlling fluid loss in acidizing treatment of a subterranean formation
US4237974A · kind A · utility
8Cited by
5References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 9, 1978 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | May 9, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/933
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improved fluid loss control is realized in an acidizing treatment of a subterranean formation, of the type wherein a gelled pad fluid is injected ahead of an acidizing fluid, by dissolving an effective amount of an inorganic water soluble metal halide or sulfate salt in the pad fluid and injecting said salt containing pad fluid ahead of the acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.