An Experimental Investigation on the Energy Signature Associated With Multiphase Flow in Porous Media Displacement Regimes

Author:

Zou Shuangmei1ORCID,Chen Dong1,Kang Nong1,Xie Congjiao1,Armstrong Ryan T.2ORCID,Cai Jianchao3

Affiliation:

1. School of Earth Resources China University of Geosciences (Wuhan) Wuhan China

2. School of Minerals and Energy Resources Engineering University of New South Wales Sydney NSW Australia

3. National Key Laboratory of Petroleum Resources and Engineering China University of Petroleum Beiing China

Abstract

AbstractThis study investigates the energy signature associated with multiphase flow in porous media displacement regimes. We proposed that net efficiency, as the conversion of external work applied to surface energy generated, provides new insights into the transition of flow regimes. The combined effects of wettability and flow rates on immiscible fluid‐fluid displacement is experimentally investigated using high‐resolution imaging in microfluidic flow cells, which allows for tracking the evolution of interfacial area under applied external work. Our study focuses on the morphology of invasion patterns and the efficiency of conversion of external work to surface energy. The results show that the morphology of invasion patterns under unfavorable displacement condition is sharper than that under favorable displacement condition with larger ratios of length and width for fingers. The efficiency of conversion of external work to surface energy decreases with the increase of contact angles and reduces greatly with the increase of Capillary numbers. With favorable displacement conditions, the efficiency of conversion is consistently higher than that for unfavorable displacement. The trends of external work and surface energy serve as a signature of the transition between different flow regimes, which exhibits alteration especially at low Capillary numbers. The findings highlight the importance of wettability and flow rates in determining the efficiency of fluid‐fluid displacement in porous media. Understanding the energy signature associated with multiphase flow can have implications for various geoscience applications, such as oil/gas recovery, groundwater remediation, and underground energy storage.

Funder

National Natural Science Foundation of China

Publisher

American Geophysical Union (AGU)

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Pore-scale investigation of forced imbibition in porous rocks through interface curvature and pore topology analysis;Journal of Rock Mechanics and Geotechnical Engineering;2024-07

2. Failure patterns in layered gas-storage systems;Advances in Geo-Energy Research;2024-05-26

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