Methods and compositions of using viscoelastic surfactants as diversion agents
US11203712B1 · kind B1 · utility
9Cited by
8References
30Claims
0Family size
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Key dates
| Filing date | Jun 8, 2020 |
| Grant date | Dec 21, 2021 |
| Priority date | — |
| Expiry date | Jun 8, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/162
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A wellbore fluid may include a gemini surfactant, a zwitterionic surfactant, an activator, and an aqueous base fluid. The gemini surfactant may have a structure represented by formula (I):where R1 is a C1-C10 hydrocarbon group, m and o are each, independently, an integer ranging from 1 to 4, and n is an integer ranging from 8 to 12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.