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Title: Methods for estimating properties of hydrocarbons comprising asphaltenes based on their solubility

Disclosed herein is a method of estimating a property of a hydrocarbon comprising the steps of: preparing a liquid sample of a hydrocarbon, the hydrocarbon having asphaltene fractions therein; precipitating at least some of the asphaltenes of a hydrocarbon from the liquid sample with one or more precipitants in a chromatographic column; dissolving at least two of the different asphaltene fractions from the precipitated asphaltenes during a successive dissolution protocol; eluting the at least two different dissolved asphaltene fractions from the chromatographic column; monitoring the amount of the fractions eluted from the chromatographic column; using detected signals to calculate a percentage of a peak area for a first of the asphaltene fractions and a peak area for a second of the asphaltene fractions relative to the total peak areas, to determine a parameter that relates to the property of the hydrocarbon; and estimating the property of the hydrocarbon.
Inventors:
;
Issue Date:
OSTI Identifier:
1327926
Assignee:
The University of Wyoming Research Corporation (Laramie, WY) NETL
Patent Number(s):
9,458,389
Application Number:
14/152,661
Contract Number:
FC26-98FT40322
Resource Relation:
Patent File Date: 2014 Jan 10
Research Org:
The University of Wyoming Research Corporation, Laramie, WY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Other works cited in this record:

On-column precipitation and re-dissolution of asphaltenes in petroleum residua
journal, February 2008

TLC–FID (Iatroscan) analysis of heavy oil and tar sand samples
journal, August 2008

Analysis of petroleum fractions by TLC-FID: applications to petroleum reservoir description
journal, January 1991

Aggregation of asphaltenes as determined by calorimetry
journal, March 1991
  • Andersen, Simon Ivar; Birdi, Kulbir S.
  • Journal of Colloid and Interface Science, Vol. 142, Issue 2, p. 497-502
  • DOI: 10.1016/0021-9797(91)90079-N

Acoustic method for measuring asphaltene flocculation in crude oils
journal, September 2000
  • Carrier, H.; Plantier, F.; Daridon, J-L.
  • Journal of Petroleum Science and Engineering, Vol. 27, Issue 3-4, p. 111-117
  • DOI: 10.1016/S0920-4105(00)00052-8

Initial studies using ultrasonic spectroscopy for monitoring changes in residua with pyrolysis
journal, October 2006

Kinetic models for the thermal cracking of Athabasca bitumen
journal, May 1985

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