Pore-scale mechanisms and characterization of light oil storage in shale nanopores: New method and insights |
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| Institution: | 1. Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi’an Shiyou University, Xi’an 710065, China;2. School of Earth Sciences and Engineering, Xi’an Shiyou University, Xi’an 710065, China;3. Petroleum Exploration and Production Research Institute, SINOPEC, Beijing 100083, China;4. School of Energy Resources, China University of Geosciences, Beijing 100083, China;5. Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China;6. Exploration and Development Institute of Shengli Oil Field Company, SINOPEC, Dongying 257000, China;7. Key Laboratory of Strategy Evaluation for Shale Gas, Ministry of Land and Resources, China University of Geosciences, Beijing 100083, China |
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| Abstract: | A new method is proposed to analyze the pore-scale mechanisms and characterization of light oil storage in shale nanopores, which is based on the Hydrocarbon Vapor Adsorption (HVA) and Pore Calculation Model (PCM). First, the basic principle of the HVA-PCM method is introduced, and the experimental/mathematical analysis processes are given. Then, the HVA-PCM method is applied to shale samples to analyze the mechanisms and characterization of light oil storage in shale nanopores. The results provide insights into the pore-scale oil storage mechanisms, oil storage structure, oil film thickness, oil distribution within different sized pores, and the oil storage state. Finally, the advantages and limitations of the HVA-PCM method are discussed, and suggestions for further improvement are proposed. Overall, the HVA-PCM method is a powerful tool for extracting quantitative information on the light oil storage in shale nanopores. |
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| Keywords: | Shale oil Storage mechanisms Storage characterization Hydrocarbon vapor adsorption |
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