Using colloidal silica as isolator, diverter and blocking agent for subsurface geological applications
US9909052B2 · kind B2 · utility
0Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Jun 5, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for blocking fast flow paths in geological formations includes preparing a solution of colloidal silica having a nonviscous phase and a solid gel phase. The solution of colloidal silica is injected into the geological formations while the solution of colloidal silica is in the nonviscous phase. The solution of colloidal silica is directed into the fast flow paths and reaches the solid gel phase in the fast flow paths thereby blocking flow of fluid in the fast paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.