@inproceedings{Montgomery:2013:10.2118/165404-MS,
author = {Montgomery, W and Sephton, MA and Court, RW and Watson, JS and Zeng, H and Rees, A},
doi = {10.2118/165404-MS},
publisher = {Society of Petroleum Engineers},
title = {Quantitative Laboratory Assessment Of Aquathermolysis Chemistry During Steam-assisted Recovery Of Heavy Oils And Bitumen, With A Focus On Sulfur},
url = {http://dx.doi.org/10.2118/165404-MS},
year = {2013}
}

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TY  - CPAPER
AB  - The production of gaseous sulfur-containing species during the steam-assisted recovery of heavy oil and bitumen presents problems owing to their toxicity, corrosion properties and odor. In order to quantitatively study aquathermolysis sulfur chemistry during the thermal (steam-assisted) recovery of heavy oils we have subjected a well-characterized and sulfur-rich bitumen core sample to 150 - 325°C and 70 - 1740 psia (0.48 - 12 MPa) conditions in the continued presence of liquid water for 24 hours. The reaction products include gases, oil flotate, oil sinkate, water-soluble products, and water- insoluble residues. All have been studied with a variety of analytical techniques, including FTIR spectroscopy, chromatographic fractionation (SARA analysis), GC-FPD and GC-MS. Moreover, these techniques have been extended to analysis of the asphaltene fractions. Results suggest that some in-situ upgrading of the oil occurs under these conditions; additionally, gaseous hydrogen sulfide is released at temperatures at and above 250 °C. Variations in the relative abundances of solubility classes and chemical fractions imply that the source of sulfur is via the thermal degradation of resins and/or asphaltenes. The experimental methods, results and quantification approach discussed herein will be useful to support the development of models for engineering design of facilities for the steam-assisted recovery of heavy oils and bitumen.
AU  - Montgomery,W
AU  - Sephton,MA
AU  - Court,RW
AU  - Watson,JS
AU  - Zeng,H
AU  - Rees,A
DO  - 10.2118/165404-MS
PB  - Society of Petroleum Engineers
PY  - 2013///
TI  - Quantitative Laboratory Assessment Of Aquathermolysis Chemistry During Steam-assisted Recovery Of Heavy Oils And Bitumen, With A Focus On Sulfur
UR  - http://dx.doi.org/10.2118/165404-MS
ER  - 

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