Methods and compositions of using viscoelastic surfactants as diversion agents
US11643590B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 12, 2021 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Nov 12, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/845
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A wellbore fluid including a first surfactant, a second surfactant, an activator and an aqueous base fluid is provided. The first surfactant has a structure represented by Formula (I): where m is an integer ranging from 2 to 3, and n, o, and k are each, independently, integers ranging from 2 to 10. The second surfactant has a structure represented by Formula (III): where R2 is a C15-C27 hydrocarbon group or a C15-C29 substituted hydrocarbon group, R3 is a C1-C10 hydrocarbon group, and p and q are each, independently, an integer ranging from 1 to 4. A method for treating a hydrocarbon-containing formation with the wellbore fluid is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.