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Permanent link (DOI): https://doi.org/10.7939/R3WX20

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Hot solvent injection for heavy-oil and bitumen recovery Open Access

Descriptions

Other title
Subject/Keyword
heavy oil recovery
asphaltene
hot solvent injeciton
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Pathak, Varun
Supervisor and department
Babadagli, Tayfun (Civil and Environmental Engineering)
Examining committee member and department
Yeung, Tony (Chemical and Materials Engineering)
Kuru, Ergun (Civil and Environmental Engineering)
Department
Department of Civil and Environmental Engineering
Specialization

Date accepted
2011-09-22T15:13:05Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
This research was undertaken to study the performance of paraffinic solvents at higher temperatures for heavy oil/bitumen recovery. Heavy oil or bitumen saturated glass bead packs, Berea sandstone and carbonate cores were used in the experiments to represent different types of pore structures, porosity and permeability. Final recovery and the quantity of asphaltene precipitated in each experiment were reported. It was observed that recovery decreased with increasing temperature and pressure of the system and that the best results were obtained when the experimental temperature is slightly higher than the solvent saturation temperature. It was also noticed that butane diluted the oil more than propane. Furthermore, numerical simulation was conducted using a commercial simulator including asphaltene precipitation option. Visualization experiments were also carried out using 2-D Hele-Shaw models to observe the effect of asphaltene precipitation on the dynamics of the process. Using this analysis, the mechanics of the hot solvent process was clarified and the impact of temperature, pressure, asphaltene deposition, permeability and solvent type on recovery were quantified.
Language
English
DOI
doi:10.7939/R3WX20
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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