Method of treating a borehole using gellable polymers
US4183406A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1978 |
| Grant date | Jan 15, 1980 |
| Priority date | — |
| Expiry date | Aug 1, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improvements in the treatment of wells that penetrate subterranean formations are accomplished through the use of a polymer solution which includes a neutralized ionomeric polymer dissolved in an organic solvent and a polar cosolvent. The polymer has a backbone that is substantially soluble in the organic solvent and pendant ionomeric groups that are substantially insoluble in the organic solvent. The polar cosolvent solubilizes the pendant ionomeric groups such that the polymer solution upon introduction into the well has a viscosity less than about 20,000 centipoises and upon mixing with water the polar cosolvent is taken up by the water causing the polymer to aggregate and increase in viscosity sufficient to form a plug. The polymer solution may be used in well drilling operations, well completion operations, and secondary recovery operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.