Alkoxylated asphalt as sacrificial agents in oil recovery processes
US4043396A · kind A · utility
7Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1976 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Jun 16, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/936
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for producing petroleum from subterranean formations is disclosed wherein production from the formation is obtained by driving a fluid from an injection well to a production well. The process involves injecting into the formation via the injection well an aqueous solution of alkoxylated asphalts as a sacrificial agent to inhibit the deposition of surfactant and/or polymer on the reservoir matrix. Normally the process would be carried out by first injecting the alkoxylated asphalts into the formation through the injection well and following them with either a polymer or a surfactant solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.