Inhibiting naphthenate solids and emulsions in crude oil
US8003574B2 · kind B2 · utility
2Cited by
5References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2008 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Dec 24, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/80
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Naphthenic acid solids and/or emulsions can be inhibited by introducing an additive to crude oil prior to or concurrent with the deprotonation of the naphthenic acids present in the crude oil. The additives may be surfactants and can be amines, quaternary ammonium compounds, quaternary phosphonium compounds, and mixtures of both. The additives may also be linear compounds having at least two carboxylic acid or acrylic acid functional moieties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.