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Systematic Modeling Approach to Selective Plugging using in-situ Bacterial Biopolymer Production and Its Potential for Microbial-Enhanced Oil Recovery

Title
Systematic Modeling Approach to Selective Plugging using in-situ Bacterial Biopolymer Production and Its Potential for Microbial-Enhanced Oil Recovery
Author
이근상
Keywords
Microbial-enhanced oil recovery; in situ selective plugging; leuconostoc mesenteroides; dextran
Issue Date
2019-05
Publisher
TAYLOR & FRANCIS INC
Citation
GEOMICROBIOLOGY JOURNAL, v. 36, NO 5, Page. 468-481
Abstract
This study presents a systematic modeling approach for examining the efficiency of the MEOR process based on in situ selective plugging by bacterial biopolymer production and optimization of the nutrient injection strategy to yield the maximum oil recovery. This study focuses on modeling in situ selective plugging by the bacterial biopolymer dextran that is generated by Leuconostoc mesenteroides. Bacterial growth and dextran generation were described by a stoichiometric equation and kinetic reactions using batch model simulation. Based on the parameters for permeability reduction obtained from the sandpack model, the MEOR process was implemented in a pilot-scale system that included a highly permeable thief zone in a low-permeability reservoir. The base MEOR design yielded a 61.5% improvement of the recovery factor compared to that obtained with waterflooding. The parametric simulations revealed that the recovery efficiency was influenced by the amount of dextran, as well as the distribution of dextran, and thus, the injection strategy is critical for controlling the dextran distribution. By incorporating the results from the sensitivity analysis and optimization to determine the optimal design parameters, a 36.7% improvement of the oil recovery was achieved with the optimized MEOR process in comparison with the base case.
URI
https://www.tandfonline.com/doi/full/10.1080/01490451.2019.1573277https://repository.hanyang.ac.kr/handle/20.500.11754/111194
ISSN
0149-0451; 1521-0529
DOI
10.1080/01490451.2019.1573277
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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