Process for reducing polymer plugging during polymer injection into oil reservoir
US4662444A · kind A · utility
7Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Apr 17, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/935
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method of treating the wellbore area of an injection well to minimize polymer plugging around the wellbore during polymer injection. The treatment can be achieved by the injection of a dilute organic cation solution to the wellbore prior to the polymer injection and additionally having the cation present during the polymer injection. Data are shown that replacement of calcium, magnesium and sodium ions by the organic cation substantially reduce plugging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.