Amphiphilic polymers for filtrate control
US11198809B2 · kind B2 · utility
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2References
12Claims
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Assignee
Inventors
Key dates
| Filing date | Jun 2, 2016 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Jun 2, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/46
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to the use of amphiphilic sequenced copolymers as an agent for controlling the filtrate in a fluid (F) injected under pressure into an underground formation, comprising—at least one chain (C) soluble in the fluid (F); and—at least one block (B) that is insoluble in the fluid (F).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.