Using colloidal silica as a zonal isolation material and fast path blocker in geological formations
US10538990B2 · kind B2 · utility
1Cited by
5References
6Claims
0Family size
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Key dates
| Filing date | Jan 19, 2018 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | Jan 19, 2038 |
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.