Characterizing the Microscopic Anisotropic Permeabilities of Tight Oil Reservoirs Impacted by Heterogeneous Minerals

Ziqiang Wang, Hongkui Ge, Yun Wei, Yi Wang, Kerui Jia, Ning Xu, Yuankai Zhang and Shuheng Du ()
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Ziqiang Wang: Institute of Unconventional Petroleum Science and Technology, China University of Petroleum, Beijing 102249, China
Hongkui Ge: Institute of Unconventional Petroleum Science and Technology, China University of Petroleum, Beijing 102249, China
Yun Wei: Research Institute of Exploration and Development, Xinjiang Oilfield Company, Karamay 834000, China
Yi Wang: Research Institute of Exploration and Development, Xinjiang Oilfield Company, Karamay 834000, China
Kerui Jia: Research Institute of Exploration and Development, Xinjiang Oilfield Company, Karamay 834000, China
Ning Xu: Research Institute of Exploration and Development, Xinjiang Oilfield Company, Karamay 834000, China
Yuankai Zhang: Research Institute of Exploration and Development, Xinjiang Oilfield Company, Karamay 834000, China
Shuheng Du: School of Earth and Space Sciences, Peking University, Beijing 100871, China

Energies, 2022, vol. 15, issue 18, 1-13

Abstract: This study aimed to reveal the anisotropic permeabilities of tight oil reservoirs impacted by heterogeneous minerals. SEM imaging, image processing, fractal calculation, microscopic reservoir modeling, and visual flow simulation were carried out to investigate the above problems. Results show that the variation coefficient of two-dimensional permeability for the studied tight reservoir samples ranges from 0.09 to 0.95, with an average value of 0.68. The penetration coefficient ranges from 1.16 to 2.64, with an average value of 2.13. The ratio of maximum to minimum permeability is between 1.25 and 7.67, with an average value of 5.62. The fluid flow in tight reservoirs has significant anisotropy comprising dominant flow through conductive channels. Flow in tight oil reservoirs tends to involve minor hydraulic fracturing with no proppant.

Keywords: oil; two-dimensional permeability; flow anisotropy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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