Crosslinked polymers including sulfonic acid groups or salts or esters thereof as viscosifiers and fluid loss additives for subterranean treatment
US10508229B2 · kind B2 · utility
1Cited by
14References
12Claims
0Family size
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Inventors
Key dates
| Filing date | Dec 22, 2014 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Dec 22, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/887
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Various embodiments disclosed relate to crosslinked polymers including sulfonic acid groups or salts or esters thereof as viscosifiers and fluid loss additives for subterranean treatment. In various embodiments, the present invention provides a method of treating a subterranean formation. The method includes placing in a subterranean formation a composition including a crosslinked viscosifier polymer including an ethylene repeating unit including an —S(O)2OR1 group wherein at each occurrence R1 is independently chosen from —H, substituted or unsubstituted (C1-C20)hydrocarbyl, and a counterion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.