Process for the consolidation of a geological formation by a substance polymerizable at the temperature and pressure of the formation
US5201612A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1992 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Sep 23, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K17/48
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process making it possible to consolidate a geological formation without significantly reducing its permeabiity. A liquid mixture (5) is injected into the formation (1) traversed by a well (2) and then at least one gas is injected through the formation under appropriate conditions. More specifically, the liquid mixture contains a polymerizable substance, preferably a melamine-formaldehyde resin, and at least one catalyst having a Lewis acid character and it substantially polymerizes at the temperature and pressure of the formation, while bonding the unconsolidated elements. Application to the consolidation of a geological formation containing sand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.