Research article of American Journal of Scientific Research and Essays
Numerical simulation and analysis of coupled Thermal-Hydrological-Mechanical in coalbed methane heating mining
Zhang Bo1, Xie Xionggang1,2
1Guizhou University, Guiyang 550025, China; 2Key Laboratory of Mineral Resources and High Efficiency in Karst Region, Guiyang 550025, China
In order to verify the effect of heating on the effect of coal seam extraction,based on the theory of elasticity, seepage mechanics and heat transfer,a Thermal-Hydrological-Mechanical coupling model for gas extraction in high temperature field is established.The numerical simulation was carried out in the engineering background of Qinghe coal mine in China.The changes situation of gas pressure and permeability under the conditions of different heating temperature were calculated respectively.The following conclusions are drawn:(1) The coupled thermo-hydro-mechanical model of gas drainage under temperature field is established, and the gas drainage effect under different working conditions is verified by numerical simulation.(2)When the heating temperature is below 453K, the high temperature can increase the permeability of coal seam,but it can not greatly increase the permeability of coal seam, and it has little effect on the reduction of coal seam gas pressure. It shows that the method of increasing coal seam permeability by heating coal can not reach the expected effect.
Keywords: coalbed methane; high temperature field; thermal fluid solid coupling; heating mining; permeability; numerical simulation.
How to cite this article:
Zhang Bo and Xie Xionggang. Numerical simulation and analysis of coupled Thermal-Hydrological-Mechanical in coalbed methane heating mining. American Journal of Scientific Research and Essays, 2018 3:13. DOI:10.28933/ajsre-2018-12-0808
1. Liu, J., Chen, Z., Elsworth, D., Qu, H., Chen, D., 2011. Interactions of multiple processes during CBM extraction: a critical review. Int. J. Coal Geol. 87, 175e189.
2. Lu, Y., Jia, Y., Ge, Z., Xia, B., 2014. Coupled fluidesolid model of coal bed methane and its application after slotting by highepressure water jet. J. China Univ. Min.Technol. 43 (1), 23e29.
3. China State Administration of Work Safety, 2009. Specification of Coal and Gas Outburst Prevention. China Coal Industry Press, Beijing, China.
4. Palmer, I., Mansoori, J.,1996. How permeability depends on stress and pore pressure in coalbeds, a new model. SPE Annual Technical Conference and Exhibition. Denver, Colorado.
5. Palmer, I., Mansoori, J., 1998. How permeability depends on stress and pore pressure in coalbeds, a new model. SPE Reservoir Evaluation and Engineering 1(6): 539-544 SPE-52607-PA.
6. Clarkson, C.R., Jordan, C.L., Gierhart, R. and Seidle, J.P. 2008. Production Data Analysis of Coalbed-Methane Wells. SPEREE 11(2): 311-325. SPE 107705.
7. Clarkson, C.R., Pan, Z., Palmer, I.D., Harpalani, S., 2010. Predicting sorption-induced strain and permeability increase with depletion for coalbed-methane reservoirs. SPE Journal, 15(1), 152-159.
8. Shi, J.Q., Durucan, S., 2004. Drawdown induced changes in permeability of coalbeds: a new interpretation of the reservoir response to primary recovery. Transport in Porous Media 56(1):1–16.
9. Shi, J.Q., Durucan, S., 2010. Exponential growth in San Juan basin Fruitland coalbed permeability with reservoir drawdown: model match and new insights. SPE Reservoir Evaluation and Engineering 13(6):914–925.
10. Shi, J.Q., Durucan, S., 2014. Modelling laboratory horizontal stress and coal permeability data using S&D permeability model, International Journal of Coal Geology 131 (2014) 172–176.
11. Cui, X., Bustin, R.M., 2005. Volumetric strain associated with methane desorption and its impact on coalbed gas production from deep coal seams. AAPG Bulletin 89 (9), 1181–1202.
12. CHAROENSUPPANIMIT P, MOHAMMAD S A,ROBERT L.Modeling the temperature dependence of supercritical gas adsorption on activated carbons， coals and shales[J].International Journal of Coal Geology, 2015,138: 113-126．
13. ZHU Wancheng,WEI Chenhui,LIU Jufu,et al.A model of coal-gas interaction under variable temperatures[J].International Journal of Coal Geology,2011,86( 23) : 213-221．
14. TENG Teng,WANG Jianguo,GAO Feng,et al.A thermally sensitive permeability model for coal-gas interactions including thermal fracturing and volatilization[J].Journal of Natural Gas Science & Engineering,2016,32: 319-333.
15. J Xie,Y Zhao .Meso-mechanism of permeability decrease or fluctuation of coal and rock with the temperature increase [J].Chinese Journal of Rock Mechanics & Engineering,2017,36(3):543-551.
16. Sahu HB, Padhee S, Mahapatra SS. Prediction of spontaneous heating susceptibility of Indian coals using fuzzy logic and artificial neural network models. Expert Syst Appl 2011;38:2271–82.
17. Yuan L, Smith AC. The effect of ventilation on spontaneous heating of coal. J Loss Prevent Proc 2012;25:131–7.
18. Yuan L, Smith AC. CFD modeling of spontaneous heating in a large-scale coal chamber. J Loss Prevent Proc 2009;25:426–33.
19. Liu J, Chen Z, Elsworth D, Qu H, Chen D. Interactions of multiple processes during CBM extraction: a critical review. Int J Coal Geol 2011;87:175–89.
20. Zhang Nan, Xia Shengquan, Hou Xinyu, et al.[J].Rock and Soil Mechanics,2016,37(6):1550-1661.
21. Tao Yunqi, Xu Jiang, Liu Dong, et al.Development and validation of THM coupling model of methane-containing coal[J].International Journal of Mining Science and Technology,2012,22:879-883.
22. Hu Yaoqing, Zhao Yangsheng, Yang Dong, et al. Experimental study on the effect of temperature on the permeability characteristics of lignite [J].Journal of Rock Mechanics and Engineering, 2010,29(8): 1585-1590.