Pore-Scale Characterization and PNM Simulations of Multiphase Flow in Carbonate Rocks

Haiyang Zhang, Hamid Abderrahmane, Mohammed Al Kobaisi and Mohamed Sassi
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Haiyang Zhang: Department of Petroleum Engineering, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
Hamid Abderrahmane: Department of Mechanical Engineering, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
Mohammed Al Kobaisi: Department of Petroleum Engineering, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
Mohamed Sassi: Department of Petroleum Engineering, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates

Energies, 2021, vol. 14, issue 21, 1-20

Abstract: This paper deals with pore-scale two-phase flow simulations in carbonate rock using the pore network method (PNM). This method was used to determine the rock and flow properties of three different rock samples, such as porosity, capillary pressure, absolute permeabilities, and oil–water relative permeabilities. The pore network method was further used to determine the properties of rock matrices, such as pore size distribution, topological structure, aspect ratio, pore throat shape factor, connected porosity, total porosity, and absolute permeability. The predicted simulation for the network-connected porosity, total porosity, and absolute permeability agree well with those measured experimentally when the image resolution is appropriate to resolve the relevant pore and throat sizes. This paper also explores the effect of the wettability and fraction of oil-wet pores on relative permeabilities, both in uniform and mixed wet systems.

Keywords: digital rock physics; pore network modeling; rock properties; two-phase flow properties; wettability (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: 2021
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