| Citation: | Wei Wu, Peng Cheng, Shenyang Liu, Chao Luo, Haifeng Gai, Haitao Gao, Qin Zhou, Tengfei Li, Kesu Zhong, Hui Tian. Gas-in-Place (GIP) Variation and Main Controlling Factors for the Deep Wufeng-Longmaxi Shales in the Luzhou Area of the Southern Sichuan Basin, China. Journal of Earth Science, 2023, 34(4): 1002-1011. doi: 10.1007/s12583-021-1593-x
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The Wufeng-Longmaxi Formation shales with burial depths > 3 500 m in the southern Sichuan Basin are believed to have large shale gas potentials. However, the reservoir properties and gas-in-place (GIP) contents of these shales exhibit variations across different sublayers. In this study, a set of Wufeng-Longmaxi shales with burial depths of 4 000–4 200 m was derived from the Well Y101H2 in the Luzhou area, and the differences in geological and geochemical characteristics, porosity, water saturation and GIP content of various sublayer shales were investigated. The results indicate that the TOC content and effective porosity of the upper (LMX1-4) and lower (LMX1-3) sublayer shales of the first member of the Longmaxi Formation are better than those of the Wufeng Formation (WF) shales, which results in the LMX1-4 and LMX1-3 shales having higher GIP contents than the WF shales. The GIP contents of the LMX1-3 shales are higher than those of the LMX1-4 shales, and this is likely because the organic matter of the LMX1-3 shales had more aquatic organisms and was preserved in a stronger reductive environment, which leads to a stronger gas generation potential. In contrast to the middle-shallow LMX1-4 shales in the Sichuan Basin, the deep LMX1-4 shales in the Luzhou area have advantageous reservoir properties and GIP contents, and thus it is promising to synchronously exploit the deep LMX1-4 and LMX1-3 shales in some regions of the southern Sichuan Basin.
| Cai, S. Y., Xiao, Q. L., Zhu, W. P., et al., 2021. Shale Reservoir Characteristics and Main Controlling Factors of Longmaxi Formation, Southern Sichuan Basin. Acta Sedimentologica Sinica, 39(5): 1100-1110 (in Chinese with English Abstract) |
| Cheng, P., Tian, H., Xiao, X. M., et al., 2017. Water Distribution in Overmature Organic-Rich Shales: Implications from Water Adsorption Experiments. Energy & Fuels, 31(12): 13120–13132. https://doi.org/10.1021/acs.energyfuels.7b01531 |
| Cheng, P., Xiao, X. M., 2013. Gas Content of Organic-Rich Shales with Very High Maturities. Journal of China Coal Society, 38(5): 737–741. https://doi.org/10.13225/j.cnki.jccs.2013.05.003 (in Chinese with English Abstract) |
| Cheng, P., Xiao, X. M., Tian, H., et al., 2018. Water Content and Equilibrium Saturation and Their Influencing Factors of the Lower Paleozoic Overmature Organic-Rich Shales in the Upper Yangtze Region of Southern China. Energy Fuels, 32: 11452–11466. https://pubs.acs.org/doi/10.1021/acs.energyfuels.8b03011 doi: 10.1021/acs.energyfuels.8b03011 |
| Cheng, P., Xiao, X. M., Wang, X., et al., 2019. Evolution of Water Content in Organic-Rich Shales with Increasing Maturity and Its Controlling Factors: Implications from a Pyrolysis Experiment on a Water-Saturated Shale Core Sample. Marine and Petroleum Geology, 109: 291–303. https://doi.org/10.1016/j.marpetgeo.2019.06.023 |
| Gasparik, M., Bertier, P., Gensterblum, Y., et al., 2014. Geological Controls on the Methane Storage Capacity in Organic-Rich Shales. International Journal of Coal Geology, 123: 34–51. https://doi.org/10.1016/j.coal.2013.06.010 |
| Guo, T. L., 2021. Progress and Research Direction of Deep Shale Gas Exploration and Development. Reservoir Evaluation and Development, 11(1): 1–6. https://doi.org/10.13809/j.cnki.cn32-1825/te.2021.01.001 (in Chinese with English Abstract) |
| He, Z. L., Nie, H. K., Hu, D. F., et al., 2020. Geological Problems in the Effective Development of Deep Shale Gas: A Case Study of Upper Ordovician Wufeng-Lower Silurian Longmaxi Formations in Sichuan Basin and Its Periphery. Acta Petrolei Sinica, 41(4): 379–391. https://doi.org/10.7623/syxb202004001 (in Chinese with English Abstract) |
| Hatch, J. R., Leventhal, J. S., 1992. Relationship between Inferred Redox Potential of the Depositional Environment and Geochemistry of the Upper Pennsylvanian (Missourian) Stark Shale Member of the Dennis Limestone, Wabaunsee County, Kansas, U. S. A. Chemical Geology, 99(1/2/3): 65–82. https://doi.org/10.1016/0009-2541(92)90031-Y |
| Korb, J. P., Nicot, B., Louis-Joseph, A., et al., 2014. Dynamics and Wettability of Oil and Water in Oil Shales. The Journal of Physical Chemistry C, 118: 23212-23218. https://pubs.acs.org/doi/pdf/10.1021/jp508659e doi: 10.1021/jp508659e |
| Li, T. F., Tian, H., Xiao, X. M., et al., 2017. Geochemical Characterization and Methane Adsorption Capacity of Overmature Organic-Rich Lower Cambrian Shales in Northeast Guizhou Region, Southwest China. Marine and Petroleum Geology, 86: 858–873. https://doi.org/10.1016/j.marpetgeo.2017.06.043 |
| Li, Y., Xue, Z. J., Cheng, Z., et al., 2020. Progress and Development Directions of Deep Oil and Gas Exploration and Development in China. China Petroleum Exploration, 25(1): 45-57 (in Chinese with English Abstract) |
| Long, S. X., Feng, D. J., Li, F. X., et al., 2018. Prospect of the Deep Marine Shale Gas Exploration and Development in the Sichuan Basin. Natural Gas Geoscience, 29(4): 443–451 (in Chinese with English Abstract) |
| Ma, X. H., Xie, J., 2018. The Progress and Prospects of Shale Gas Exploration and Exploitation in Southern Sichuan Basin, NW China. Petroleum Exploration and Development, 45(1): 161–169 (in Chinese with English Abstract) |
| Milliken, K. L., Rudnicki, M., Awwiller, D. N., et al., 2013. Organic Matter-Hosted Pore System, Marcellus Formation (Devonian), Pennsylvania. AAPG Bulletin, 97(2): 177–200. https://doi.org/10.1306/07231212048 |
| Odusina, E., Sondergeld, C., Rai, C., 2011. An NMR Study on Shale Wettability. Society of Petroleum Engineers, SPE-147371-MS: 1–15. https://doi.org/10.2118/147371-ms |
| Pan, L., Xiao, X. M., Tian, H., et al., 2015. A Preliminary Study on the Characterization and Controlling Factors of Porosity and Pore Structure of the Permian Shales in Lower Yangtze Region, Eastern China. International Journal of Coal Geology, 146: 68–78. https://doi.org/10.1016/j.coal.2015.05.005 |
| Passey, Q. R., Bohacs, K., Esch, W. L., et al., 2010. From Oil-Prone Source Rock to Gas-Producing Shale Reservoir—Geologic and Petrophysical Characterization of Unconventional Shale Gas Reservoirs. Society of Petroleum Engineers, SPE-131350-MS: 1–29. https://doi.org/10.2118/131350-ms |
| Rexer, T. F. T., Benham, M. J., Aplin, A. C., et al., 2013. Methane Adsorption on Shale under Simulated Geological Temperature and Pressure Conditions. Energy & Fuels, 27(6): 3099–3109. https://doi.org/10.1021/ef400381v |
| Sakurovs, R., Day, S., Weir, S., et al., 2007. Application of a Modified Dubinin–Radushkevich Equation to Adsorption of Gases by Coals under Supercritical Conditions. Energy & Fuels, 21(2): 992–997. https://doi.org/10.1021/ef0600614 |
| Sondergeld, C., Newsham, K., Comisky, J., et al., 2010. Petrophysical Considerations in Evaluating and Producing Shale Gas Resources. Society of Petroleum Engineers, SPE-131768-MS: 1–34. https://doi.org/10.2523/131768-ms |
| Tian, H., Pan, L., Xiao, X. M., et al., 2013. A Preliminary Study on the Pore Characterization of Lower Silurian Black Shales in the Chuandong Thrust Fold Belt, Southwestern China Using Low Pressure N2 Adsorption and FE-SEM Methods. Marine and Petroleum Geology, 48: 8–19. https://doi.org/10.1016/j.marpetgeo.2013.07.008 |
| Tian, H., Pan, L., Zhang, T. W., et al., 2015. Pore Characterization of Organic-Rich Lower Cambrian Shales in Qiannan Depression of Guizhou Province, Southwestern China. Marine and Petroleum Geology, 62: 28–43. https://doi.org/10.1016/j.marpetgeo.2015.01.004 |
| Wang, X. M., Liu, L. F., Wang, Y., et al., 2020. Comparison of the Pore Structures of Lower Silurian Longmaxi Formation Shales with Different Lithofacies in the Southern Sichuan Basin, China. Journal of Natural Gas Science and Engineering, 81: 103419. https://doi.org/10.1016/j.jngse.2020.103419 |
| Wang, Y., Cheng, H. F., Hu, Q. H., et al., 2021. Diagenesis and Pore Evolution for Various Lithofacies of the Wufeng-Longmaxi Shale, Southern Sichuan Basin, China. Marine and Petroleum Geology, 133: 105251. https://doi.org/10.1016/j.marpetgeo.2021.105251 |
| Wang, Y. M., Dong, D. Z., Li, X. J., et al., 2015. Stratigraphic Sequence and Sedimentary Characteristics of Lower Silurian Longmaxi Formation in the Sichuan Basin and Its Peripheral Areas. Natural Gas Industry, 35(3): 12–21 (in Chinese with English Abstract) |
| Wen, H., Chen, M., Jin, Y., et al., 2015. Water Activity Characteristics of Deep Brittle Shale from Southwest China. Applied Clay Science, 108: 165–172. https://doi.org/10.1016/j.clay.2015.02.015 |
| Wignall, P. B., Twitchett, R. J., 1996. Oceanic Anoxia and the End Permian mass Extinction. Science, 272: 1155–1158. https://www.science.org/doi/10.1126/science.272.5265.1155 doi: 10.1126/science.272.5265.1155 |
| Wu, Y. J., Wang, Y., Li, J., 2021. Sedimentary Characteristics and Main Reservoir Control Factors of Deep Shale in the Sichuan Basin: A Case Study on the Longmaxi Formation in the Eastern Weiyuan Area. Natural Gas Industry, 41(5): 55–65 (in Chinese with English Abstract) |
| Yang, H. Z., Zhao, S. X., Liu, Y., et al., 2019. Main Controlling Factors of Enrichment and High-Yield of Deep Shale Gas in the Luzhou Block, Southern Sichuan Basin. Natural Gas Industry, 39(11): 55–63 (in Chinese with English Abstract) |
| Yang, J., Zhan, G. W., Zhao, Y., et al., 2021. Characteristics of Supercritical Adsorption and Desorption of Deep Shale Gas in South Sichuan. Reservoir Evaluation and Development, 11(2): 50–55, 62. https://doi.org/10.13809/j.cnki.cn32-1825/te.2021.02.006 (in Chinese with English Abstract) |
| Yang, W. X., Li, J. Q., Gou, Q. F., 2017. Experiment Study on Shale Adsorption Properties for Jiaoshiba Shale, Sichuan Basin. Natural Gas Geoscience, 28(9): 1350–1355 (in Chinese with English Abstract) |
| Yang, Z. H., Hu, Z. Q., Xiong, L., et al., 2020. Gas Storage Characteristics and Coupling Characteristics of Deep Shale Gas: A Case Study of Well-X in Southern Sichuan Basin, China. Reservoir Evaluation and Development, 10(5): 20–27. https://doi.org/10.13809/j.cnki.cn32-1825/te.2020.05.003 (in Chinese with English Abstract) |
| Zhang, C. L., Zhao, S. X., Zhang, J., et al., 2021. Analysis and Enlightenment of the Difference of Enrichment Conditions for Deep Shale Gas in Southern Sichuan Basin. Natural Gas Geoscience, 32(2): 248–261 (in Chinese with English Abstract) |
| Zhao, S. X., Yang, Y. M., Zhang, J., et al., 2016. Micro-Layers Division and Fine Reservoirs Contrast of Lower Silurian Longmaxi Formation Shale, Sichuan Basin, SW China. Natural Gas Geoscience, 27(3): 470–487 (in Chinese with English Abstract) |
| Zhou, Q., Tian, H., Wang, Y. F., et al., 2015. The Generation and Evolution Characteristics of the Lower Cambrian Shale in the Central Sichuan Paleo-Uplift. Natural Gas Geoscience, 26(10): 1883–1892 (in Chinese with English Abstract) |
| Zhu, Y. Q., Chen, G. S., Liu, Y., et al., 2021. Sequence Stratigraphy and Lithofacies Paleogeographic Evolution of Katian Stage-Aeronian Stage in Southern Sichuan Basin, SW China. Petroleum Exploration and Development, 48(5): 1126–1138 (in Chinese with English Abstract) |
| Zolfaghari, A., Dehghanpour, H., Holyk, J., 2017. Water Sorption Behaviour of Gas Shales: Ⅰ. Role of Clays. International Journal of Coal Geology, 179: 130–138. https://doi.org/10.1016/j.coal.2017.05.008 |
| Zou, C. N., Zhao, Q., Cong, L. Z., et al., 2021. Development Progress, Potential and Prospect of Shale Gas in China. Natural Gas Industry, 41(1): 1-14 (in Chinese with English Abstract) |
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