Выходит 6 номеров в год
ISSN Печать: 1543-1649
ISSN Онлайн: 1940-4352
Indexed in
MULTISCALE PORE STRUCTURE ANALYSIS IN CARBONATE ROCKS
Краткое описание
Carbonate reservoirs are inherently heterogeneous; the pore sizes can vary over orders of magnitude and often show trimodal distribution, and it is necessary to describe the pore characteristics of different scales in carbonate rocks. In this article, two-dimensional thin section carbonate images with different resolutions are collected with scanning electron microscopy; the lowest-resolution image shows vug characteristics, the intermediate resolution shows interpore characteristics, and the highest-resolution image shows intrapore characteristics. Based on three different resolution images, a Markov chain Monte Carlo method is used to reconstruct vug, interpore, and intrapore digital rock, and the corresponding pore-scale network models are extracted, respectively. Then, a hybrid method including superposition and integration is used to construct a carbonate multiscale network model. At last, the geometry-topology and flow properties are analyzed and compared among the vug, macro pore, micro pore, and multiscale networks. Results show that the carbonate multiscale network with hybrid method could capture the pore size distribution and connectivity characteristics of different scales simultaneously. More importantly, different contributions to flow properties of certain scale pore structures are recognized, flow processes are simulated among each pore-scale network under water wet conditions, and the water phase relative permeability curves of each pore network model have a similar tendency; however, the oil phase relative permeability curve of the multiscale network model has the highest isoperm saturation and lowest residual oil saturation. Compared with each single pore-scale network model, the multiscale network has a better connectivity and flow ability owing to the mutual connection between different scale pores, and it has important theoretical and applicational meanings for the microscopic flow study in carbonate rocks.
-
Yang Yongfei, Liu Zhihui, Sun Zhixue, An Senyou, Zhang Wenjie, Liu Pengfei, Yao Jun, Ma Jingsheng, Research on Stress Sensitivity of Fractured Carbonate Reservoirs Based on CT Technology, Energies, 10, 11, 2017. Crossref
-
Ning Yang, Wei Chenji, Qin Guan, A unified grayscale lattice Boltzmann model for multiphase fluid flow in vuggy carbonates, Advances in Water Resources, 124, 2019. Crossref
-
Wu Yuqi, Tahmasebi Pejman, Lin Chengyan, Munawar Muhammad Jawad, Cnudde Veerle, Effects of micropores on geometric, topological and transport properties of pore systems for low-permeability porous media, Journal of Hydrology, 575, 2019. Crossref
-
Yang Yongfei, Li Yingwen, Yao Jun, Zhang Kai, Iglauer Stefan, Luquot Linda, Wang Zengbao, Formation damage evaluation of a sandstone reservoir via pore-scale X-ray computed tomography analysis, Journal of Petroleum Science and Engineering, 183, 2019. Crossref
-
Kirch Alexsandro, Razmara Naiyer, Mamani Vladivostok Franz Suxo, Meneghini Julio Romano, Miranda Caetano Rodrigues, Multiscale Molecular Modeling Applied to the Upstream Oil & Gas Industry Challenges, Polytechnica, 3, 1-2, 2020. Crossref
-
Yang Yongfei, Tao Liu, Yang Haiyuan, Iglauer Stefan, Wang Xin, Askari Roohollah, Yao Jun, Zhang Kai, Zhang Lei, Sun Hai, Stress Sensitivity of Fractured and Vuggy Carbonate: An X‐Ray Computed Tomography Analysis, Journal of Geophysical Research: Solid Earth, 125, 3, 2020. Crossref
-
Zhou Hanmiao, Li Song, Zhao Suping, Wang Junjian, Wang Mingfeng, Stress Sensitivity of Coal: A Digital Core Analysis, Energy & Fuels, 36, 6, 2022. Crossref
-
Fan Yuchen, Liu Keyu, Yu Lingjie, Liu Jie, Regenauer-Lieb Klaus, Assessment of multi-scale pore structures and pore connectivity domains of marine shales by fractal dimensions and correlation lengths, Fuel, 330, 2022. Crossref