Process for restoring the permeability of a subterranean formation
US5038864A · kind A · utility
28Cited by
17References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1990 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | May 10, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/929
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for restoring the injectivity of a well penetrating and in fluid communication with a subterranean formation wherein an aqueous treating solution comprising a mixture of an aqueous solution having no more than 30 weight percent of hydrogen peroxide dissolved therein and a mutual solvent is injected via the well to contact polymer accumulation so as to degrade and disperse same. The mutual solvent comprises alcohol, aromatic hydrocarbon, and an alkyl or alkylaryl polyoxyalkylene phosphate ester surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.