Self-breaking retarded acid emulsion
US4140640A · kind A · utility
35Cited by
7References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1977 |
| Grant date | Feb 20, 1979 |
| Priority date | — |
| Expiry date | Jul 6, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/934
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A subterranean formation is acidized with an emulsion comprising an aqueous acidizing solution, an oil, an effective amount each of an alkyl C.sub.8 to C.sub.18 primary fatty amine and at least one diethanolamide of at least one C.sub.8 to C.sub.18 fatty acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.