Abstract
Coalbed methane (CBM) is a natural gas resource related with coal deposits. In general, Gas status parameters gradually with the depth of the stratum. However, in areas with complex geological structures and multiple coal seam occurrences, the gas storage situation in shallow coal seams is typically better than in deep coal seams. This research paper focuses on coal seams numbered 8, 9, and 10 within the Luling coal seam as the subject of study. The study combines the analysis of gas accumulation history, laboratory experiments, and field investigations to examine the differences in gas occurrence within the coal seam group. The findings suggest that the differences in gas occurrence state within each coal seam of the Luling coal mine is predominantly governed by tectonic processes. During the process of tectonic evolution, the thicker coal seams, such as Nos. 8 and 9, are more prone to fracturing, leading to the formation of widely distributed tectonic coal. These broken coal bodies exhibit a significant capacity to store gas, resulting in favorable gas storage conditions within these coal seams. On the other hand, the low permeability of the mudstone in the roof layer restricts the migration and seepage of gas in the No. 10 coal seam, leading to a comparatively lower sealing effect for gas. By providing a comprehensive understanding of the gas content differences in the coal seam group, this study highlights the significant influence of geological processes on the distribution and storage of gas. These findings contribute to understanding the characteristics of gas reservoirs under complex geological conditions and adopting corresponding measures to reduce the risk of coal and gas outbursts in coal seams.
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References
Bustin RM, Clarkson CR (1998) Geological controls on coalbed methane reservoir capacity and gas content. Int J Coal Geol 38:3–26. https://doi.org/10.1016/S0166-5162(98)00030-5
Cai P, Nie W, Chen D, Yang S, Liu Z (2019) Effect of air flowrate on pollutant dispersion pattern of coal dust particles at fully mechanized mining face based on numerical simulation. Fuel 239:623–635. https://doi.org/10.1016/j.fuel.2018.11.030
Chen Y, Mastalerz M, Schimmelmann A (2012) Characterization of chemical functional groups in macerals across different coal ranks via micro-FTIR spectroscopy. Int J Coal Geol 104:22–33. https://doi.org/10.1016/j.coal.2012.09.001
Cheng X, Zhao G, Li Y, Meng X, Tu Q (2020) Key technologies and engineering practices for soft-rock protective seam mining. Int J Min Sci Technol 30:889–899. https://doi.org/10.1016/j.ijmst.2020.07.006
Cheng Y, Liu Q, Ren T (2021) Coal mechanics. Springer Singapore, Singapore. https://doi.org/10.1007/978-981-16-3895-4
Ding D, Liu G, Fu B (2019) Influence of carbon type on carbon isotopic composition of coal from the perspective of solid-state C-13 NMR. Fuel 245:174–180. https://doi.org/10.1016/j.fuel.2019.02.072
Fu S, Wang L, Li S, Zheng S, Li J (2023) The effect of organic matter fraction extracted on micropores development degree and CH4 adsorption capacity of coal. Gas Sci Eng 110:204870. https://doi.org/10.1016/j.jgsce.2022.204870
Fu S, Wang L, Li S, Ni S, Cheng Y, Zhang X, Liu S (2024) Re-thinking methane storage mechanism in highly metamorphic coalbed reservoirs — a molecular simulation considering organic components. Energy 293:130444. https://doi.org/10.1016/j.energy.2024.130444
Guo H, Tang H, Wu Y, Wang K, Xu C (2021a) Gas seepage in underground coal seams: application of the equivalent scale of coal matrix-fracture structures in coal permeability measurements. Fuel 288:119641. https://doi.org/10.1016/j.fuel.2020.119641
Guo H, Wang K, Wu Y, Tang H, Wu J, Guan L, Chang C, Xu C (2021b) Evaluation of the weakening behavior of gas on the coal strength and its quantitative influence on the coal deformation. Int J Min Sci Technol 31:451–462. https://doi.org/10.1016/j.ijmst.2021.03.005
Jiang B, Qu Z, Wang GGX, Li M (2010) Effects of structural deformation on formation of coalbed methane reservoirs in Huaibei coalfield, China. Int J Coal Geol 82:175–183. https://doi.org/10.1016/j.coal.2009.12.011
Karacan CO, Goodman GVR (2012) Analyses of geological and hydrodynamic controls on methane emissions experienced in a lower Kittanning coal mine. Int J Coal Geol 98:110–127. https://doi.org/10.1016/j.coal.2012.04.002
Karacan CO, Ruiz FA, Cote M, Phipps S (2011) Coal mine methane: a review of capture and utilization practices with benefits to mining safety and to greenhouse gas reduction. Int J Coal Geol 86:121–156. https://doi.org/10.1016/j.coal.2011.02.009
Kong S, Cheng Y, Ren T, Liu H (2014) A sequential approach to control gas for the extraction of multi-gassy coal seams from traditional gas well drainage to mining-induced stress relief. Appl Energy 131:67–78. https://doi.org/10.1016/j.apenergy.2014.06.015
Lei Y, Cheng Y, Wang L, Ren T, Li Q (2022) Potential infrasonic tremors in coal seam systems: implications for the prediction of coal and gas outbursts. Fuel 326:125000. https://doi.org/10.1016/j.fuel.2022.125000
Li Y, Shao L, Fielding CR, Wang D, Mu G (2021) Sequence stratigraphy, paleogeography, and coal accumulation in a lowland alluvial plain, coastal plain, and shallow-marine setting: Upper carboniferous-Permian of the Anyang-Hebi coalfield, Henan Province, North China. Palaeogeogr Palaeoclimatol Palaeoecol 567:110287. https://doi.org/10.1016/j.palaeo.2021.110287
Liu J, Zhang R, Song D, Wang Z (2019) Experimental investigation on occurrence of gassy coal extrusion in coalmine. Saf Sci 113:362–371. https://doi.org/10.1016/j.ssci.2018.12.012
Moore TA (2012) Coalbed methane: a review. Int J Coal Geol 101:36–81. https://doi.org/10.1016/j.coal.2012.05.011
Pashin JC (2007) Hydrodynamics of coalbed methane reservoirs in the Black Warrior Basin: key to understanding reservoir performance and environmental issues. Appl Geochem 22:2257–2272. https://doi.org/10.1016/j.apgeochem.2007.04.009
Qin Y, Moore TA, Shen J, Yang Z, Shen Y, Wang G (2018) Resources and geology of coalbed methane in China: a review. Int Geol Rev 60:777–812. https://doi.org/10.1080/00206814.2017.1408034
Shao L, Dong D, Li M, Wang H, Wang D, Lu J, Zheng M, Cheng A (2014) Sequence-paleogeography and coal accumulation of the Carboniferous-Permian in the North China Basin. J China Coal Soc 39:1725–1734. https://doi.org/10.13225/j.cnki.jccs.2013.9033
Staub JR, Cohen AD (1979) The Snuggedy Swamp of South Carolina: A Back-Barrier Estuarine Coal-Forming Environment. SEPM J Sediment Res Vol 49. https://doi.org/10.1306/212F76D5-2B24-11D7-8648000102C1865D
Su XB, Zhang LP, Zhang RL (2003) The abnormal pressure regime of the Pennsylvanian 8 coalbed methane reservoir in Liulin-Wupu District, Eastern Ordos Basin, China. Int J Coal Geol 53:227–239. https://doi.org/10.1016/S0166-5162(03)00015-6
Sun Y, Wang L, Wang R, Zheng S, Liao X, Zhu Z, Zhao Y (2022) Insight on microscopic mechanisms of CH4 and CO2 adsorption of coal with different ranks. Fuel 330:125715. https://doi.org/10.1016/j.fuel.2022.125715
Suto N, Kawashima H (2016) Global mapping of carbon isotope ratios in coal. J Geochem Explor 167:12–19. https://doi.org/10.1016/j.gexplo.2016.05.001
Thommes M, Kaneko K, Neimark AV, Olivier JP, Rodriguez-Reinoso F, Rouquerol J, Sing KSW (2015) Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report). Pure Appl Chem 87:1051–1069. https://doi.org/10.1515/pac-2014-1117
Wang C, Cheng Y (2023) Role of coal deformation energy in coal and gas outburst: a review. Fuel 332:126019. https://doi.org/10.1016/j.fuel.2022.126019
Wang L, Cheng Y, Wang, Lei, Guo P, Li W (2012) Safety line method for the prediction of deep coal-seam gas pressure and its application in coal mines. Saf Sci 50:523–529. https://doi.org/10.1016/j.ssci.2011.09.022
Wang H, Cheng Y, Yuan L (2013) Gas outburst disasters and the mining technology of key protective seam in coal seam group in the Huainan coalfield. Nat Hazards 67:763–782. https://doi.org/10.1007/s11069-013-0602-5
Wang H, Zhang L, Wang D, He X (2017) Experimental investigation on the wettability of respirable coal dust based on infrared spectroscopy and contact angle analysis. Adv Powder Technol 28:3130–3139. https://doi.org/10.1016/j.apt.2017.09.018
Wang L, Sun Y, Zheng S, Shu L, Zhang X (2023) How efficient coal mine methane control can benefit carbon-neutral target: evidence from China. J Clean Prod 424:138895. https://doi.org/10.1016/j.jclepro.2023.138895
Zheng G, Ma X, Guo Z, Hilton DR, Xu W, Liang S, Fan Q, Chen W (2017) Gas geochemistry and methane emission from Dushanzi mud volcanoes in the southern Junggar Basin, NW China. J Asian Earth Sci 149:184–190. https://doi.org/10.1016/j.jseaes.2017.08.023
Zhu G, Gu L, Su J, Dai J, Ding W, Zhang J, Song L (2012) Sedimentary association of alternated mudstones and tight sandstones in China’s oil and gas bearing basins and its natural gas accumulation. J Asian Earth Sci 50:88–104. https://doi.org/10.1016/j.jseaes.2012.01.008
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The authors are grateful for the financial support of the National Natural Science Foundation of China (No. 52174216), the Fundamental Research Funds for the Central Universities (Nos. 2021YCPY0206 and 2020ZDPY0224), the Funded by the Graduate Innovation Program of China University of Mining and Technology (No.2023WLKXJ136).
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Zheng, S., Wang, L., Chen, D. et al. Main control factors of coalbed methane occurrence differences in adjacent coal seams - a case study of Luling coal mine, Huaibei Coalfield, China. Nat Hazards (2024). https://doi.org/10.1007/s11069-024-06636-8
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DOI: https://doi.org/10.1007/s11069-024-06636-8