Method of controlling asphaltene precipitation in a fluid

Details Method of controlling asphaltene precipitation in a fluid Method of controlling asphaltene precipitation in a fluid

2002-07-26

2008-10-21

McAvoy, Ellen M. (Department: 1797)

Mineral oils: processes and products

Asphalts, tars, pitches and resins; making, treating and...

C208S044000, C208S045000, C208S309000, C507S090000

Reexamination Certificate

active

07438797

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.

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