Method of controlling asphaltene precipitation in a fluid
US7438797B2 · kind B2 · utility
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15References
29Claims
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Key dates
| Filing date | Jul 26, 2002 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Jul 16, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L10/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of reducing the aggregation and deposition of asphaltene from a fluid containing asphaltene, such as crude oil, which method comprises the addition to the fluid of a compound of formula (1): wherein A is an optionally substituted ring system containing 6 to 14 carbon atoms; n is at least 1 and may equal the number of positions available for substitution in A; each X is independently a linker group; and each R is independently a hydrocarbyl group containing 10 to 25 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.