Surfactant compositions comprising solid substrates for subterranean well operations
US11434414B2 · kind B2 · utility
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10References
18Claims
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Key dates
| Filing date | Jul 12, 2019 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Oct 10, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of preparing a solid surfactant composite may include: coating a liquid water-wetting surfactant on a solid carrier; and drying the solid carrier to produce the solid surfactant composite. A method may include: introducing a spacer fluid into a wellbore, the spacer fluid comprising a solid surfactant composite; and displacing a fluid in the wellbore using the spacer fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.