Study on property evaluation and numerical simulation of air-foam flooding in low permeability reservoir

ABSTRACT

Comprehensively considering the migration law of air and foam in porous media, various physical and chemical phenomena, and the change of gas phase mobility are researched, then mathematical models of air-foam flooding are established. Based on air-foam flooding experiments, the relevant parameters of empirical model for numerical simulation of air-foam flooding were obtained. Matching of parallel core displacement experiment and air foam test flooding in Wuliwan Oilfield is completed with total fitting degree of more than 90%, and the reliability of empirical model of numerical simulation for air-foam flooding is verified.

KEYWORDS:

• Low permeability reservoir
• air-foam flooding
• property evaluation
• numerical simulation
• history matching

Additional information

Funding

The authors thank National Natural Science Foundation of China [51574052], National Science and Technology Major Project [2016ZX05047-004-004], Chongqing Basic Science and Advanced Technology Research Project [cstc2019jcyj-msxmX0331, cstc2018jcyjAX0700], University Innovation Team Project of Chongqing Municipal [CXTDX201601033], Internal research fund of Chongqing University of Science & Technology [ck2017zkyb006] for supporting this work.

Notes on contributors

Yingzhong Yuan

Yingzhong Yuan, senior engineer, graduated from Southwest Petroleum University with a Ph.D. degree in oil and gas field development engineering. At present, he is mainly engaged in the research of oil/gas seepage mechanism and reservoir numerical simulation.

Wende Yan

Wende Yan, senior engineer, graduated from Southwest Petroleum University with a Ph.D. degree in oil and gas field development engineering. At present, he is mainly engaged in the research of oil and gas seepage mechanism.

Zhilin Qi

Zhilin Qi, professor, graduated from Southwest Petroleum University with a Ph.D. degree. At present, he is mainly engaged in the research of unconventional oil/gas seepage mechanism and development technology.

Taotao Luo

Taotao Luo, senior engineer, graduated from Chengdu University of Technology with a Ph.D. degree in oil and gas field development engineering. At present, he is mainly engaged in the research of oilfield chemistry and oil production engineering.

Wei Fan

Wei Fan, engineer, graduated from Southwest Petroleum University with a master's degree in oil and gas field development engineering. At present, he is mainly engaged in the research of low permeability oilfield development.