Polymer solutions for use in oil recovery containing a complexing agent for multivalentions
US4265673A · kind A · utility
49Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1979 |
| Grant date | May 5, 1981 |
| Priority date | — |
| Expiry date | Jun 20, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/917
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a polymer solution for use in "polymer based" oil recovery comprises adding to water the polymer in the form of an aqueous solution, a dry particulate solid or a suspension in a non-aqueous liquid, and also adding a complexing agent for multivalent ions and, where the solution so formed does not already contain an alkali metal salt, subsequently incorporating therein an alkali metal salt. The polymer may be a substantially cell-free microbial polysaccharide gum, a polyacrylamide or a cellulose derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.