Characteristics of a Coal Reservoir Pore-Fracture System and Favourable Reservoir Selection in the Kuba Coalfield, Xinjiang Province, China
Authors
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School of Resources and Environment, Henan Polytechnic University, Jiaozuo, Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Henan Province, Jiaozuo, Henan International Joint Laboratory for Unconventional Energy Geology and Development, Jiaozuo ,CN
Zhou Zhang -
Faculty of Earth Resources, China University of Geosciences (Wuhan), Wuhan ,CNShengwei Wang
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School of Resources and Environment, Henan Polytechnic University, Jiaozuo, Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Henan Province, Jiaozuo, Henan International Joint Laboratory for Unconventional Energy Geology and Development, Jiaozuo ,CNMin Zhou
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School of Resources and Environment, Henan Polytechnic University, Jiaozuo, Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Henan Province, Jiaozuo, Henan International Joint Laboratory for Unconventional Energy Geology and Development, Jiaozuo ,CNBaoan Xian
Keywords:
Coalbed methane; coal reservoir; porefracture system; reservoir selection; Kuba coalfieldAbstract
The Kuba coalfield in Xinjiang province is a new block for the exploration and development of coalbed methane in China, and in order to explore the coalbed methane recovery potential the coal reservoir pore-fracture system characteristics need to be researched, and favourable reservoir selection needs to be carried out. The pores, microfissures, and macro-fissures are studied as an organic whole. To characterize the physical properties and microscopic pores of coal reservoirs 4 sets of experiments are performed. A scanning electron microscope is used to study the development characteristics of micro-fissure systems; surface tectonic fissure mapping techniques and fine comparison of coal reservoirs in mines are conducted to study the endogenous and exogenous fissures. The characteristics of porosity and fissure are also studied, including the A coal seam group in the Tariqik formation, the Yangxia formation B coal seam and the Kizinur formation C coal seam. The results obtained in this study demonstrated that two coal seams in the Kuba coalfield, namely A5 and A7, are more favourable reservoirs compared to the other seams based on the perspective of pore-fissures, and these results provide a theoretical basis for coalbed methane exploration and development.
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References
Gamson, P.D., Beamish, B.B., Johnson, D.P., 1998. Effect of coal micro-structure and secondary mineralization on methane recovery. Geological Special Publication 199 (1), 165-179.
Shi, J.Q., Durucan, S., 2005. Gas storage and flowin coalbed reservoirs: implementation of a bidisperse pore model for gas diffusion in a coal matrix. SPE (Society of Petroleum Engineers) Reservoir Evaluation & Engineering 8 (2), 169175.
Xu, H., Zhang, S.H., Leng, X., Tang, D.Z.,Wang, M.S., 2005.
Analysis of pore system model and physical property of coal reservoir in the QinshuiBasin. Chinese Science Bulletin 50, 45-50.
Yao, Y.B., Liu, D.M., Tang, D.Z., Tang, S.H., Huang, W.H., Liu, Z.H., Che, Y., 2009. Fractal characterization of seepagepores of coals from China: an investigation on permeability of coals. Computer and Geo-sciences 35 (6), 1159-1166.
Ayers Jr., W.B., (2002): Coalbed gas systems, resources, and production and a review of contrasting cases from the San Juan and Powder River basins. AAPG Bull. 86(11), 1853-1890.
Sang, S., Zhu, Y., Zhang, J., Zhang, X., Tang, J., (2005): Solide gas interaction mechanism of coal-absorbed gas (I)coal pore structure and solid-gas interaction. Nat. Gas. Ind. 1, 004.
Li, S., Tang, D., Pan, Z., Xu, H., Huang, W., (2013): Characterization of the stress sensitivity of pores for different rank coals by nuclear magnetic resonance. Fuel 111, 746-754.
Li, S., Tang, D., Pan, Z., Xu, H., (2014a): Influence and control of coal facies on physical properties of the coal reservoirs in western Guizhou and eastern Yunnan, China. Int. J. Oil Gas Coal Technol. 8, 221-234.
Moore, T.A., (2012): Coalbed methane: a review. Int. J. Coal Geol. 101, 36e81.
Law, B.E., (1993): The relation between coal rank and cleat spacing: implications for the prediction of permeability in coal. Proc. Int. Coalbed Methane Symp. II, 435-442.
Xue, G., Liu, H., Li, W., (2012): Deformed coal types and pore characteristics in Han-cheng coalmines in Eastern Weibei coalfields. Int. J. Min. Sci. Technol. 22, 681-686.
Zhang, Z., Wang, S., Wang, X., (2016): Physical Characteristics of Coal Reservoir and Prospects in Exploration and Development of Kuqa-Bay Coalfield, Xinjiang. J. Coal Technology. 35, 117-119.
Tang, S., Sun, S., Hao, D., Tang, D., (2004). Coalbed methane-bearing characteristics and reservoir physical properties of principal target areas in North China. Acta Geol. Sin. 78, 724-728.
Li, G., Zhang, H., (2013): The origin mechanism of coalbed methane in the eastern edge of Ordos Basin. Sci. China Earth Sci. 8, 1359-1364.
Meng, Y., Tang, D., Xu, H., Li, C., Li, L., Meng, S., (2014): Geological controls and coalbed methane production potential evaluation: a case study in Liulin area, eastern Ordos Basin, China. J. Nat. Gas Sci. Eng. 21, 95-111.
Cai, Y., Liu, D., Yao, Y., Li, J., Qiu, Y., (2011): Geological controls on prediction of coalbed methane of No. 3 coal seam in Southern Qinshui Basin, North China. Int. J. Coal Geol. 88, 101-112.
Tao, S.,Wang, Y., Tang, D., Xu, H., Lv, Y., He,W., Li, Y., (2012): Dynamic variation effects of coal permeability during the coalbed methane development process in the Qinshui Basin, China. Int. J. Coal Geol. 93, 16-22.
LV, Y., Tang, D., Xu, H., Luo,H., (2012): Production characteristics and the key factors in high-rank coalbed methane fields: a case study on the Fanzhuang Block Southern Qinshui Basin, China. Int. J. Coal Geol. 96, 93-108.
