Quantitative characterization of fluid occurrence in shale reservoirs
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Abstract
Shale oil and gas, as important unconventional resources, have been widely discussed in the last decade. The occurrence characteristics of fluids (oil, gas, and water) in shale reservoirs are closely related to the exploitation of shale oil and gas, therefore the quantitative characterization of fluid occurrence in shale reservoirs has received extensive attention. In this paper, the latest advances and potential challenges on this subject are summarized. With respect to shale oil, the amounts, ratios and micro-distributions of shale oil in different states can be determined using the state equation of liquid and adsorption ratio equation, which contributes to identifying high-quality shale oil reservoirs. However, it is still necessary to strengthen the research on the multi-attribute coupling relationship and oil-rock interaction of shale oil reservoirs, and the determination of occurrence characteristics of adsorbed and free oil under in situ reservoir conditions. In terms of shale gas evaluation, the process analysis method and isotope fractionation method effectively solve the problem of evaluating in situ gas-bearing characteristics of shale, and can accurately estimate the amounts of total, adsorbed and free gas. The quantum physisorption behavior of gas could be a new research direction to reveal the microscopic occurrence mechanism of shale gas. As for shale pore water, a complete evaluation procedure for determining the amounts and micro-distributions of adsorbed and free water in shale matrix pores has been established, which provides insight into the storage and flow of oil and gas. In future work, a study on the quantitative evaluation of water-rock interaction is significant for obtaining the adsorbed and free water under in situ reservoir conditions.
Document Type: Perspective
Cited as: Li, J., Cai, J. Quantitative characterization of fluid occurrence in shale reservoirs. Advances in Geo-Energy Research, 2023, 9(3): 146-151. https://doi.org/10.46690/ager.2023.09.02
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Ahsani, T., Tamsilian, Y., Rezaei, A. Molecular dynamic simulation and experimental study of wettability alteration by hydrolyzed polyacrylamide for enhanced oil recovery: A new finding for polymer flooding process. Journal of Petroleum Science and Engineering, 2021, 196: 108029.
Babatunde, K. A., Negash, B. M., Jufar, S. R., et al. Adsorption of gases on heterogeneous shale surfaces: A review. Journal of Petroleum Science and Engineering, 2022, 208: 109466.
Bai, J., Kang, Y., Chen, M., et al. Impact of surface chemistry and pore structure on water vapor adsorption behavior in gas shale. Chemical Engineering Journal, 2020, 402: 126238.
Cai, J., Lin, D., Singh, H., et al. A simple permeability model for shale gas and key insights on relative importance of various transport mechanisms. Fuel, 2019a, 252: 210-219.
Cai, J., Zhang, Z., Wei, W., et al. The critical factors for permeability-formation factor relation in reservoir rocks: Pore-throat ratio, tortuosity and connectivity. Energy, 2019b, 188: 116051.
Dang, W., Nie, H., Zhang, J., et al. Pore-scale mechanisms and characterization of light oil storage in shale nanopores: New method and insights. Geoscience Frontiers, 2022,13: 101424.
Tian, S., Xue, H., Lu, S., et al. Molecular simulation of oil mixture adsorption character in shale system. Journal of Nanoscience and Nanotechnology, 2017, 17(9): 6198-6209.
Fei, J., Wang, M., Li, J., et al. Molecular dynamics simulation of adsorption and absorption behavior of shale oil in realistic kerogen slits. Energy & Fuels, 2023, 37: 3654-3671.
Gao, Z., Xiong, S., Wei, L. The new multistage water adsorption model of Longmaxi Formation shale considering the spatial configuration relationship between organic matter and clay minerals. Petroleum Science, 2022, 19: 1950-1963.
Gou, Q., Xu, S. Quantitative evaluation of free gas and adsorbed gas content of Wufeng-Longmaxi shales in the Jiaoshiba area, Sichuan Basin, China. Advances in Geo-Energy Research, 2019, 3(3): 258-267.
He, X., Chen, G., Wu, J., et al. Deep shale gas exploration and development in the southern Sichuan Basin: New progress and challenges. Natural Gas Industry B, 2023, 10: 32-43.
Hu, T., Pang, X., Jiang, F., et al. Movable oil content evaluation of lacustrine organic-rich shales: Methods and a novel quantitative evaluation model. Earth-Science Reviews, 2021, 214: 103545.
Jarvie, D. M. Shale resource systems for oil and gas: Part 2—shale-oil resource systems. Shale reservoirs-giant resources for the 21st century: AAPG Memory, 2012, 97: 89-119.
Jin, Z. Hydrocarbon accumulation and resources evaluation: Recent advances and current challenges. Advances in Geo-Energy Research, 2023, 8(1): 1-4.
Li, J. Development of adsorption ratio equation and state equation of liquid and their geological significance. Capillarity, 2021a, 4(4): 63-65.
Li, J. Quantum physisorption of gas in nanoporous media: A new perspective. Processes, 2023, 11(3): 758.
Li, W., Lu, S., Li, J., et al. Geochemical modeling of carbon isotope fractionation during methane transport in tight sedimentary rocks. Chemical Geology, 2021b, 566: 120033.
Li, J., Jiang, C., Wang, M., et al. Adsorbed and free hydrocarbons in unconventional shale reservoir: A new insight from NMR T1-T2 maps. Marine and Petroleum Geology, 2020a, 116: 104311.
Li, J., Lu, S., Cai, J., et al. Adsorbed and free oil in lacustrine nanoporous shale: A theoretical model and a case study. Energy & Fuels, 2018a, 32(12): 12247-12258.
Li, J., Lu, S., Zhang, P., et al. Estimation of gas-in-place content in coal and shale reservoirs: A process analysis method and its preliminary application. Fuel, 2020b, 259: 116266.
Li, J., Wang, M., Jiang, C., et al. Sorption model of lacustrine shale oil: Insights from the contribution of organic matter and clay minerals. Energy, 2022, 260: 125011.
Li, J., Wang, S., Lu, S., et al. Microdistribution and mobility of water in gas shale: A theoretical and experimental study. Marine and Petroleum Geology, 2019, 102: 496-507.
Li, Q., Pang, X., Tang, L., et al. Occurrence features and gas content analysis of marine and continental shales: A comparative study of Longmaxi Formation and Yanchang Formation. Journal of Natural Gas Science & Engineering, 2018b, 56: 504-522.
Li, Z., Zou, Y., Xu, X., et al. Adsorption of mudstone source rock for shale oil-experiments, model and a case study. Organic Geochemistry, 2016, 92: 55-62.
Lin, Z., Li, J., Wang, M., et al. Organic fluid migration in low permeability reservoirs restricted by pore structure parameters. Journal of Petroleum Science and Engineering, 2022, 218: 111028.
Mudoi, M. P., Sharma, P., Khichi, A.S. A review of gas adsorption on shale and the influencing factors of CH4 and CO2 adsorption. Journal of Petroleum Science and Engineering, 2022, 217: 110897.
Mukhametdinova, A., Kazak, A., Habina-Skrzyniarz, I., et al. NMR relaxometry interpretation of source rock liquid saturation-A holistic approach. Marine and Petroleum Geology, 2021, 132: 105165.
Pang, X., Li, M., Li, B., et al. Main controlling factors and movability evaluation of continental shale oil. Earth-Science Reviews, 2023, 243: 104472.
Shen, W., Li, X., Cihan, A., et al. Experimental and numerical simulation of water adsorption and diffusion in shale gas reservoir rocks. Advances in Geo-Energy Research, 2019, 3(2): 165-174.
Tazikeh, S., Shafiei, A., Yerkenov, T., et al. A systematic and critical review of asphaltene adsorption from macroscopic to microscopic scale: Theoretical, experimental, statistical, intelligent, and molecular dynamics simulation approaches. Fuel, 2022, 329: 125379.
Tian, Z., Wei, W., Zhou, S., et al. Impacts of gas properties and transport mechanisms on the permeability of shale at pore and core scale. Energy, 2022, 244: 122707.
Wang, X., Li, J., Jiang, W., et al. Characteristics, current exploration practices, and prospects of continental shale oil in China. Advances in Geo-Energy Research, 2022, 6(6): 454-459.
Wei, S., He, S., Pan, Z., et al. Models of shale gas storage capacity during burial and uplift: Application to Wufeng-Longmaxi shales in the Fuling shale gas field. Marine and Petroleum Geology, 2019, 109: 233-244.
Xu, H., Yu, H., Fan, J., et al. Two-phase transport characteristic of shale gas and water through hydrophilic and hydrophobic nanopores. Energy & Fuels, 2020, 34: 4407-4420.
Yang, R., Jia, A., He, S., et al. Water adsorption characteristics of organic-rich Wufeng and Longmaxi Shales, Sichuan Basin (China). Journal of Petroleum Science and Engineering, 2020a, 193: 107387.
Yang, R., Jia, A., He, S., et al. Experimental investigation of water vapor adsorption isotherm on gas-producing Longmaxi shale: Mathematical modeling and implication for water distribution in shale reservoirs. Chemical Engineering Journal, 2021, 406: 125982.
Yang, R., Jia, A., Hu, Q., et al. Particle size effect on water vapor sorption measurement of organic shale: One example from Dongyuemiao Member of Lower Jurassic Ziliujing Formation in Jiannan Area of China. Advances in Geo-Energy Research, 2020b, 4(2): 207-218.
Zhang, L., Li, Q., Liu, Y., et al. Molecular insight of flow property for gas-water mixture (CO2/CH4-H2O) in shale organic matrix. Fuel, 2021, 288: 119720.
Zhang, P., Lu, S., Li, J., et al. Evaluating microdistribution of adsorbed and free oil in a lacustrine shale using nuclear magnetic resonance: A theoretical and experimental study. Journal of Petroleum Science and Engineering, 2022, 212: 110208.
Zhao, W., Hu, S., Hou, L., et al. Types and resource potential of continental shale oil in China and its boundary with tight oil. Petroleum Exploration and Development, 2020, 47(1): 1-11.
Zolfaghari, A., Dehghanpour, H., Holyk, J. Water sorption behaviour of gas shales: I. Role of clays. International Journal of Coal Geology, 2017a, 179: 130-138.
Zolfaghari, A., Dehghanpour, H., Xu, M. Water sorption behaviour of gas shales: II. Pore size distribution. International Journal of Coal Geology, 2017b, 179: 187-195.
Zou, C., Yang, Z., Zhang, G., et al. Conventional and unconventional petroleum “orderly accumulation”: Concept and practical significance. Petroleum Exploration and Development, 2014, 41(1): 14-30.
Zou, C., Zhu, R., Dong, D., et al. Scientific and technological progress, development strategy and policy suggestion regarding shale oil and gas. Acta Petrolei Sinica, 2022, 43(12): 1675-1686.
DOI: https://doi.org/10.46690/ager.2023.09.02
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