Sand consolidation with a curable resin and filtercake removal fluid
US11492531B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Oct 12, 2021 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Oct 12, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/025
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sand consolidation for a subterranean formation can be achieved by adding a curable resin to a drilling fluid. The curable resin can be a furan- or epoxy- or silane-based resin. The drilling fluid can form a filtercake on a wellbore wall. A filtercake-removal fluid can provide a dual function to remove the filtercake and cure the curable resin, which consolidates formation particles. A curing agent can also be included in the filtercake-removal fluid. Sand consolidation can also be achieved by adding the curable resin to the filtercake-removal fluid. The resin can penetrate into the formation as the filtercake is being removed and then cure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.