Use of encapsulated polyamines for limiting fluid loss
US10144857B2 · kind B2 · utility
1Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for sealing a subterranean environment, wherein a polyurethane encapsulated polyamine is injected into the subterranean environment and is released in situ in the presence of a reactive species able to form a gel or a precipitate by a physical association and/or a chemical reaction with the released polyamine, is described herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.