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Special Topics & Reviews in Porous Media: An International Journal
ESCI SJR: 0.376 SNIP: 0.466 CiteScore™: 0.83

ISSN Druckformat: 2151-4798
ISSN Online: 2151-562X

Special Topics & Reviews in Porous Media: An International Journal

DOI: 10.1615/SpecialTopicsRevPorousMedia.2017020279
pages 263-272

A MATHEMATICAL MODEL OF MICROBIAL ENHANCED OIL RECOVERY IN POROUS MEDIA

Jianlong Xiu
Civil and Environmental Engineering School, University of Science and Technology Beijing, China; Research Institute of Petroleum Exploitation and Development, China National Petroleum Company, Langfang 065007, Hebei, China
Tianyuan Wang
Institute of Porous Flow and Fluid Mechanics, Graduate University of Chinese Academy of Sciences, Langfang 065007, Hebei, China
Ying Guo
Research Institute of Petroleum Exploitation and Development, China National Petroleum Company, Langfang 065007, Hebei, China
Qingfeng Cui
Research Institute of Petroleum Exploitation and Development, China National Petroleum Company, Langfang 065007, Hebei, China
Lixin Huang
Research Institute of Petroleum Exploitation and Development, China National Petroleum Company, Langfang 065007, Hebei, China
Yuandong Ma
Research Institute of Petroleum Exploitation and Development, China National Petroleum Company, Langfang 065007, Hebei, China
Weiyao Zhu
School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, BJ 100083, China

ABSTRAKT

The microbial enhanced oil recovery (MEOR) mathematical model, which could accurately describe the growth, migration, and recovery of microorganisms in porous media, provided guidance for the preparation and prediction of field tests. Based on the analysis of microbial migration in porous media, a three-dimensional, three-phase, nine-component mathematical model was developed to reflect the process of microbial flooding. The components were related to oil, gas, water, microbial 1 (suspension phase), microbial 2 (reversible adsorption phase), microbial 3 (irreversible adsorption phase), nutrient 1 (suspension phase), nutrient 2 (adsorption phase), and the electron acceptor. The model described the adsorption and reaction kinetics of each component in porous media, described the reversible and irreversible adsorption process of bacteria, and the reaction kinetics equation took into account the effects of nutrients and oxygen. Microorganism 1 exists in the water phase, whose growth is limited by nutrient 1, and microorganisms 2 and 3 are adsorbed on the rock surface, whose growth are limited by nutrient 2. The microorganisms' effect on fluid properties in the reservoir was analyzed in the model, and the key parameters that played an important role in enhancing oil recovery were also elaborated. In the end, the method of obtaining the model parameters and the solving method of the model equations are shown in the paper.


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