Methods of controlling fines migration in a well
US10822538B2 · kind B2 · utility
0Cited by
9References
23Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Feb 7, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of treating a subterranean formation penetrated by a wellbore comprises introducing into the subterranean formation a treatment fluid comprising encapsulated particles having a core of a crosslinking agent and a shell of a chitosan encapsulant disposed on the core; releasing the crosslinking agent from the encapsulated particles with an acid; reacting the released crosslinking agent with the chitosan encapsulant or a derivative thereof forming a polymerized chitosan; and consolidating a plurality of particles in the subterranean formation with the polymerized chitosan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.