Method for determining asphaltene stability of a hydrocarbon-containing material

Schabron, John F; Rovani, Jr., Joseph F

Method for determining asphaltene stability of a hydrocarbon-containing material

Patent · Tue Feb 05 00:00:00 EST 2013

OSTI ID:1083223

Schabron, John F; Rovani, Jr., Joseph F

A method for determining asphaltene stability in a hydrocarbon-containing material having solvated asphaltenes therein is disclosed. In at least one embodiment, it involves the steps of: (a) precipitating an amount of the asphaltenes from a liquid sample of the hydrocarbon-containing material with an alkane mobile phase solvent in a column; (b) dissolving a first amount and a second amount of the precipitated asphaltenes by changing the alkane mobile phase solvent to a final mobile phase solvent having a solubility parameter that is higher than the alkane mobile phase solvent; (c) monitoring the concentration of eluted fractions from the column; (d) creating a solubility profile of the dissolved asphaltenes in the hydrocarbon-containing material; and (e) determining one or more asphaltene stability parameters of the hydrocarbon-containing material.

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Research Organization:: The University of Wyoming Research Corporation (Laramie, WY)

Sponsoring Organization:: USDOE

DOE Contract Number:: FC26-98FT40322

Assignee:: The University of Wyoming Research Corporation (Laramie, WY)

Patent Number(s):: 8,367,425

Application Number:: 13/490,316

OSTI ID:: 1083223

Country of Publication:: United States

Language:: English

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