Influence of Pore Geometry on Sandstone Pore Analysis Based on a Digital Core

Xuechao Liu; Xuechao Liu; Dazhong Ren

doi:10.3389/fphy.2022.838954

Frontiers in Physics (May 2022)

Influence of Pore Geometry on Sandstone Pore Analysis Based on a Digital Core

Xuechao Liu,
Xuechao Liu,
Dazhong Ren

Affiliations

Xuechao Liu: School of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xian, China
Xuechao Liu: Engineering Research Center of Development and Management for Low to Ultra-Low Permeability Oil and Gas Reservoirs in West China, Ministry of Education, Xi’an Shiyou University, Xian, China
Dazhong Ren: Engineering Research Center of Development and Management for Low to Ultra-Low Permeability Oil and Gas Reservoirs in West China, Ministry of Education, Xi’an Shiyou University, Xian, China

DOI: https://doi.org/10.3389/fphy.2022.838954
Journal volume & issue: Vol. 10

Abstract

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A digital core obtained without damage and contact can provide intuitive and quantitative analysis data for sandstone pore structure analysis. However, pore analysis results based on digital cores are quite different from experimental results due to limitations of scanning resolution, quality, pore extraction method, and experimental errors. In this research, the influence of pore geometry on pore analysis is studied from pore angles and pore resolution. First, sharp angles are extracted by image processing, and the influence of angles on pore radius distribution is analyzed. Then, by up–down sampling, high- and low-resolution digital cores are reconstructed, and the effects of resolution on pore connectivity and throat structure are discussed.

Published in Frontiers in Physics

ISSN: 2296-424X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Science: Physics
Website: https://www.frontiersin.org/journals/physics

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