Selective salt management for wellbore fluids using microgel particles
US11111427B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Dec 29, 2017 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Dec 29, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous-based well treatment fluid for and methods of controlling metal ions in a well, wherein the treatment fluid and methods use one or more polymer microgels, which comprise a plurality of polymer particles. Each polymer particle has a polymeric backbone bearing at least one moiety where such moiety is a chelating agent capable of boding with a metal ion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.