Method for sealing a permeable subterranean formation
US4034811A · kind A · utility
15Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1975 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Nov 20, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/138
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for sealing a permeable subterranean formation, particularly adjacent to a wellbore, is disclosed. Briefly, the method comprises; PA1 A. adding a liquid polymerizable material (e.g. furfuryl alcohol) to the wellbore at the site adjacent to the permeable subterranean formation, PA1 B. adding an acidic catalyst to the wellbore at the site defined in (a), PA1 C. allowing polymerization to occur both in the wellbore and in the adjacent subterranean formation, and PA1 D. removing the polymerized material from the wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.