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Sustainability
Volume 11
Issue 6
10.3390/su11061652
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Article

Development of Coupled Biokinetic and Thermal Model to Optimize Cold-Water Microbial Enhanced Oil Recovery (MEOR) in Homogenous Reservoir

by
Eunji Hong
,
Moon Sik Jeong
,
Tae Hong Kim
,
Ji Ho Lee
,
Jin Hyung Cho
and
Kun Sang Lee
*
Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Korea
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(6), 1652; https://doi.org/10.3390/su11061652
Submission received: 15 February 2019 / Revised: 13 March 2019 / Accepted: 14 March 2019 / Published: 19 March 2019
(This article belongs to the Special Issue Microbial Enhanced Oil Recovery: Advances in Theory and Sustainable Applications)
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Abstract

By incorporating a temperature-dependent biokinetic and thermal model, the novel method, cold-water microbial enhanced oil recovery (MEOR), was developed under nonisothermal conditions. The suggested model characterized the growth for Bacillus subtilis (microbe) and Surfactin (biosurfactant) that were calibrated and confirmed against the experimental results. Several biokinetic parameters were obtained within approximately a 2% error using the cardinal temperature model and experimental results. According to the obtained parameters, the examination was conducted with several injection scenarios for a high-temperature reservoir of 71 °C. The results proposed the influences of injection factors including nutrient concentration, rate, and temperature. Higher nutrient concentrations resulted in decreased interfacial tension by producing Surfactin. On the other hand, injection rate and temperature changed growth condition for Bacillus subtilis. An optimal value of injection rate suggested that it affected not only heat transfer but also nutrient residence time. Injection temperature led to optimum reservoir condition for Surfactin production, thereby reducing interfacial tension. Through the optimization process, the determined optimal injection design improved oil recovery up to 53% which is 8% higher than waterflooding. The proposed optimal injection design was an injection sucrose concentration of 100 g/L, a rate of 7 m3/d, and a temperature of 19 °C.
Keywords: microbial enhanced oil recovery (MEOR); biokinetics; biosurfactant; Bacillus subtilis; thermal modeling; high temperature reservoir microbial enhanced oil recovery (MEOR); biokinetics; biosurfactant; Bacillus subtilis; thermal modeling; high temperature reservoir

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MDPI and ACS Style

Hong, E.; Jeong, M.S.; Kim, T.H.; Lee, J.H.; Cho, J.H.; Lee, K.S. Development of Coupled Biokinetic and Thermal Model to Optimize Cold-Water Microbial Enhanced Oil Recovery (MEOR) in Homogenous Reservoir. Sustainability 2019, 11, 1652. https://doi.org/10.3390/su11061652

AMA Style

Hong E, Jeong MS, Kim TH, Lee JH, Cho JH, Lee KS. Development of Coupled Biokinetic and Thermal Model to Optimize Cold-Water Microbial Enhanced Oil Recovery (MEOR) in Homogenous Reservoir. Sustainability. 2019; 11(6):1652. https://doi.org/10.3390/su11061652

Chicago/Turabian Style

Hong, Eunji, Moon Sik Jeong, Tae Hong Kim, Ji Ho Lee, Jin Hyung Cho, and Kun Sang Lee. 2019. "Development of Coupled Biokinetic and Thermal Model to Optimize Cold-Water Microbial Enhanced Oil Recovery (MEOR) in Homogenous Reservoir" Sustainability 11, no. 6: 1652. https://doi.org/10.3390/su11061652

APA Style

Hong, E., Jeong, M. S., Kim, T. H., Lee, J. H., Cho, J. H., & Lee, K. S. (2019). Development of Coupled Biokinetic and Thermal Model to Optimize Cold-Water Microbial Enhanced Oil Recovery (MEOR) in Homogenous Reservoir. Sustainability, 11(6), 1652. https://doi.org/10.3390/su11061652

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