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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Swelling and Deswelling Kinetics of AT-O3S Polymer
Author(s)
Mahmoud Elsharafi and Cody Chancellor
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DOI:10.17265/1934-8975/2017.03.004
Affiliation(s)
McCoy School of Engineering College of Science and Mathematics, Midwestern State University, Wichita Falls, Texas 76310, United States
ABSTRACT
In
the oil industry, techniques decreasing unwanted water production have drawn
large amounts of interest from many companies. During water injection
operations, water is injected into the oil reservoir to extract oil trapped in
the formation. Due to the heterogeneity in the reservoir formation, oil
production will decline and water production will increase as the injected
water sweeps the high permeability zones. In order to flush out the oil
remaining in the low permeability zones, many treatments have been used. One
such treatment involves the injection of an SAP (superabsorbent polymer) into the high permeability
zones. The swelled polymer will decrease the heterogeneity of reservoir permeability,
thus forcing water injection into the oil rich, unswept zones/areas of the
formation. Proper application of an SAP can have a dramatic impact on both the
production and lifespan of mature oil wells. Successful treatment is reliant
upon the reservoir salinity, temperature, and pH.
KEYWORDS
Water shutoff, reservoir heterogeneity, swelling and deswelling of polymer, pH value, chemical treatment, enhanced oil recovery.
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