Multifunctional composition for enhanced oil recovery, improved oil quality and prevention of corrosion
US11549052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2018 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Nov 8, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/32
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The subject invention provides compositions and methods for simultaneously enhancing oil recovery, improving the quality of oil and gas through reduction in sulfur-containing compounds, and preventing and/or reducing corrosion of oil and gas production equipment. A multi-functional composition is provided comprising an antimicrobial biosurfactant component, a first ammonium salt, and ammonium hydroxide. In some embodiments, the efficiency of the composition is further enhanced by the addition of a chelating agent, a phenol (e.g., carbolic acid or phenolic acid), and/or an H2S scavenger. In some embodiments, the composition is further enhanced for use in cold climates by the addition of an antifreeze mixture comprising one or more of a second ammonium salt, sodium chloride and glycerol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.