Characterization of heavy oil by capillary supercritical fluid chromatography
- Alberta Research Council, Edmonton, AB (Canada). Oil Sands Research Dept.
Using supercritical CO/sub 2/ as the mobile phase with a 30m x 100{mu} ID SPB-5 capillary column and temperature of 90{sup 0}C, high boiling fractions of heavy oils could be characterized. A linear restrictor placed as close as possible to the flame ionization detector jet prevented the characteristic spiking often observed in these systems, and also allowed the study of high molecular weight material without plugging of the restrictor. The boiling points of model saturate and aromatic compounds correlate with retention time providing the capability to study heavy oils without exposing them to the high temperature necessary in gas chromatography. Individual peaks can be resolved for the n-paraffins in waxes up to C/sub 90/. Primary production, fireflood and steamflood heavy oils and bitumens were compared by this technique.
- OSTI ID:
- 5717906
- Journal Information:
- Fuel Science and Technology International; (USA), Vol. 7:5-6; ISSN 0884-3759
- Country of Publication:
- United States
- Language:
- English
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OXYGEN COMPOUNDS
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