METHOD FOR DETERMINING ASPHALTENE STABILITY OF A HYDROCARBON-CONTAINING MATERIAL
摘要
A method for determining asphaltene stability in a hydrocarbon-containing material having solvated asphaltenes therein is disclosed. The method 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 gradually and continuously changing the alkane mobile phase solvent to a final mobile phase solvent having a solubility parameter at least 1 MPa0.5 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.
申请公布号
WO2011032123(A2)
申请公布日期
2011.03.17
申请号
WO2010US48712
申请日期
2010.09.14
申请人
CHEVRON U.S.A. INC.;OVALLES, CESAR;ROGEL, ESTRELLA;MOIR, MICHAEL