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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Modeling Effect of Bitumen Extraction Processes on Oil Sands Tailings Ponds
Author(s)
Silawat Jeeravipoolvarn1, Warren Miller 2, Don Scott3, Louis Kabwe3 and Ward Wilson3
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DOI:10.17265/1934-7359/2017.01.006
Affiliation(s)
1. FSCA Software, Khon Kaen 40000, Thailand
2. Advisian, Worley Parsons Group, Perth, Western Australia 6000, Australia
3. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
ABSTRACT
In the oil sands industry, high temperature with the addition of a
caustic dispersing agent has formed the basis of the
Clark hot water extraction process used successfully on a commercial scale to
recover bitumen from surface mined oil sands ore since 1967. Processes
different from the established Clark process (high temperature and caustic)
have been developed to work at a range of temperatures with or without the use
of sodium hydroxide. Large scale bitumen extraction pilot tests were performed
with two different extraction processes and large strain consolidation tests
were performed on the resulting different tailings. These consolidation tests
determined the compressibility and hydraulic conductivity relationships with
void ratio which are engineering properties that influence the long-term
disposal of the fine tailings. They were used in large strain consolidation
numerical analyses of storage ponds to predict water release rates and changes
to surface elevations that impact storage volumes and elevation of reclamation
surfaces.
KEYWORDS
Oil sands, tailings, consolidation, seepage.
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