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Application of computed tomography (CT) in geologic CO2 utilization and storage research: A critical review
Manguang Gan (1,2), Liwei Zhang (1,2), Xiuxiu Miao (3), Sergey Oladyshkin (4), Xiaowei Cheng (5,6), Yan Wang (1), Yutong Shu (7), Xuebin Su (8), Xiaochun Li (1,2)
Geologic CO2 storage; Computed tomography; Pore structure; In-situ characterization; Multi-phase flow
Computed tomography (CT) is a useful sample characterization and analysis technique to better understand complicated reactive transport processes in geologic CO2 utilization and storage (GCUS) conditions. According to previous studies, we have identified four major challenges that hinder the application of CT scanning in GCUS-related sample characterization: (1) lack of registration, segmentation, noise/artifact-reducing and model selection algorithms; (2) great uncertainty in mineral composition characterization; (3) low resolution to characterize caprock with nanopores, and (4) limited real-time CT imaging capacity. To tackle these challenges, future R&D directions regarding CT applications in GCUS research are proposed.
Dragonfly was used for image visualization and processing.
(1) State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei, 430071, China
(2) University of Chinese Academy of Sciences, Beijing, 100049, China
(3) State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu Province, 221116, China
(4) Institute for Modelling Hydraulic and Environmental Systems, University of Stuttgart, Pfaffenwaldring 5a, 70569, Stuttgart, Germany
(5) School of New Energy and Materials, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
(6) State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, 610500, China
(7) Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan, Hubei, 430074, China
(8) China National Uranium Co., Ltd., No. 14 Building, 7th Block, Hepingli, Dongcheng District, Beijing, 100013, China
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