Synergistic effect of cosurfactants on the rheological performance of drilling, completion and fracturing fluids
US10308866B2 · kind B2 · utility
1Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2014 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Feb 5, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the viscoelastic surfactant based fluids and methods for utilizing same in oilfield applications including, but not limited to gravel packing, cleanup, drilling, acidizing, fracturing and the like in a subterranean formation. The viscoelastic fluid of the invention comprises at least one amphoteric surfactant and at least one synergistic cosurfactant that increases the gel strength and extends the brine tolerance of said viscoelastic-based fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.