PROBLEMS AND CHALLENGES OF MECHANICS IN SHALE GAS EFFICIENT EXPLOITATION

Liu Zhanli; Zhuang Zhuo; Meng Qingguo; Zhan Shige; Huang Keh-Chih

doi:10.6052/0459-1879-16-399

Volume 49 Issue 3

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Liu Zhanli, Zhuang Zhuo, Meng Qingguo, Zhan Shige, Huang Keh-Chih. PROBLEMS AND CHALLENGES OF MECHANICS IN SHALE GAS EFFICIENT EXPLOITATION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2017, 49(3): 507-516. doi: 10.6052/0459-1879-16-399

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Liu Zhanli, Zhuang Zhuo, Meng Qingguo, Zhan Shige, Huang Keh-Chih. PROBLEMS AND CHALLENGES OF MECHANICS IN SHALE GAS EFFICIENT EXPLOITATION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2017, 49(3): 507-516. doi: 10.6052/0459-1879-16-399

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PROBLEMS AND CHALLENGES OF MECHANICS IN SHALE GAS EFFICIENT EXPLOITATION

doi: 10.6052/0459-1879-16-399

*.
Applied Mechanics Lab., School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
†.
Department of Mathematical & Physical Science, National Natural Science Foundation of China, Beijing 100085, China

Received Date: 2016-12-27
Available Online: 2017-05-03
Publish Date: 2017-05-18

Abstract

Abstract

Shale gas is unconventional natural gas stored in shale in free or absorbed forms and sometimes in free fluid phase. The exploitation of shale gas has become a promising field of green energy development in China. Although great success has been achieved in shale gas revolution in North America with the technique of hydraulic fracturing, there is only 5%~15% of the stored oil and gas could be exploited, which is still a puzzle for petroleum engineers. Compared with the North America, China's shale gas reservoirs are deep burial, the geologic construction conditions are complicated and natural quality is low, therefore, efficient exploitation is facing more difficulties and challenges. In recent years, aiming at the national major energy strategy and the frontier of technological development, China's academia and industry have carried out the preliminary study on some of the key scientific and technical issues. Around the new issues encountered in the shale gas extraction in Sichuan and Chongqing areas in recent three years, this paper introduces and summarizes the key mechanics problems and challenges that the high efficient shale gas extraction is facing, mainly includes the multifield coupling safe and high quality drilling mechanics, hydraulic fracturing and multi-scale fracture network formation mechanism and multi-scale seepage and desorption mechanism of shale gas, to solve the challenges in deep exploitation below 3500 meters in China, such as geologic sedimentation, different fracture development, increasing overburden pressure, the change of horizontal stress, etc. The deep shale gas exploitation is not only to adapt to the national energy demand, but also has scientific and engineering significance. To realize the efficient exploitation of shale oil and gas, it needs the interdisciplinary collaboration of mechanical engineering, petroleum engineering, geophysics, chemical engineering and environmental engineering to carry out basic theoretical research, physical simulation, numerical simulation and field experiment. It has been recognized that interdisciplinary research is the bridge and the key to breakthrough the technology bottleneck and realize the efficient exploitation of shale gas. It is necessary of the deep collaboration between mechanics, petroleum engineering, earth science and other disciplines to promote the development of shale gas and other unconventional oil and gas resources.
- shale gas,
- engineering geology mechanics,
- well drilling and completion theory,
- hydraulic fracture,
- multiscale seepage

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References(28)

References

[1]	U.S. Energy Information Administration. Shale gas production drives world natural gas production growth. 2006. http://www.eia.gov/todayinenergy/detail.php?id=27512
[2]	王南, 裴玲, 雷丹凤等.中国非常规天然气资源分布及开发现状.油气地质与采收率, 2015, 22(1):26-31 http://www.cnki.com.cn/Article/CJFDTOTAL-XBZY201505058.htm Wang Nan, Pei Ling, Lei Danfeng, et al. Analysis of unconventional gas resources distribution and development status in China. Petroleum Geology and Recovery Efficiency, 2015, 22(1):26-31 (in Chinese) http://www.cnki.com.cn/Article/CJFDTOTAL-XBZY201505058.htm
[3]	董大忠, 邹才能, 杨桦等.中国页岩气勘探开发进展与发展前景.石油学报, 2012, 33(s1):107-114 doi: 10.7623/syxb2012S1013 Dong Dazhong, Zou Caineng, Yang Hua, et al. Progress and prospects of shale gas exploration and development in China. Acta Petrolei Sinica, 2012, 33(s1):107-114 (in Chinese) doi: 10.7623/syxb2012S1013
[4]	Bažant ZP, Salviato M, Chau VT, et al. Why fracking works. Journal of Applied Mechanics, 2014, 81(10):101010 doi: 10.1115/1.4028192
[5]	李玉喜, 张金川.我国非常规油气资源类型和潜力.国际石油经济, 2011, 3:61-67 doi: 10.3969/j.issn.1004-7298.2011.03.011 Li Yuxi, Zhang Jinchuan. Unconventional gas & oil resource type and potential of China. International Petroleum Economy, 2011, 3:61-67 (in Chinese) doi: 10.3969/j.issn.1004-7298.2011.03.011
[6]	Nelson PH. Pore-throat sizes in sandstones, tight sandstones, and shales. AAPG Bulletin, 2009, 93(3):329-340 doi: 10.1306/10240808059
[7]	邹才能, 朱如凯, 吴松涛等.常规与非常规油气聚集类型, 特征, 机理及展望——以中国致密油和致密气为例.石油学报, 2012, 33(2):173-187 doi: 10.7623/syxb201202001 Zou Caineng, Zhu Rukai, Wu Songtao, et al. Types, Characteristics, genesis and prospects of conventional and unconventional hydrocarbon accumulations:taking tight oil and tight gas in China as an instance. Acta Petrolei Sinica, 2012, 33(2):173-187 (in Chinese) doi: 10.7623/syxb201202001
[8]	Nobakht M, Clarkson CR, Kaviani D. New type curves for analyzing horizontal well with multiple fractures in shale gas reservoirs//Proceedings of the SPE Unconventional Resources Conference, Calgary, Alberta, Canada, 15-17 November 2011. Society of Petroleum Engineers, 2011
[9]	Lewis AM, Hughes RG. Production data analysis of shale gas reservoirs//Proceedings of the SPE Annual Technical Conference and Exhibition, Denver, Colorado, USA, 21-24 September 2008. Society of Petroleum Engineers, 2008
[10]	朱光普, 姚军, 樊冬艳等.页岩气藏压裂水平井试井分析.力学学报, 2015, 47(6):945-954 doi: 10.6052/0459-1879-15-229 Zhu Guangpu, Yao Jun, Fan Dongyan, et al. Pressure transient analysis of fractured horizontal well in shale gas reservoir. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(6):945-954 (in Chinese) doi: 10.6052/0459-1879-15-229
[11]	Arthur JD, Bohm B, Layne M. Evaluating implications of hydraulic fracturing in shale gas reservoirs. SPE 121038, 2009
[12]	Akbarnejad-Nesheli B, Valko PP, Lee WJ. Relating fracture network characteristics to shale gas reserve estimation. SPE 154841, 2012 Warpinski NR, Branagm PT. Altered-stress fracturing. SPE 17533, 1989
[13]	Soliman MY, East L, Adams D. Geomechnics aspects of multiple fracturing of horizontal and vertical wells. SPE 86992, 2004
[14]	Cheng Y. Impacts of the number of perforation clusters and cluster spacing on production performance of horizontal shale gas wells. SPE 138843, 2010
[15]	Wikel K. Geomechanics:bridging the gap from geophysics to engineering in unconventional reservoirs. First Break, 2011, 29:71-81
[16]	Wu K, Olson JE. Investigation of critical in situ and injection factors in multi-frac treatments:guidelines for controlling fracture complexity. SPE 163821, 2013
[17]	陈作, 薛承瑾, 蒋廷学等.页岩气井体积压裂技术在我国的应用建议.天然气工业, 2010, 30(10):30-32 doi: 10.3787/j.issn.1000-0976.2010.10.007 Chen Zuo, Xue Chengjin, Jiang Tingxue, et al. Proposals for the application of fracturing by stimulated reservoir volume (SRV) in shale gas wells in China. Natural Gas Industry, 2010, 30(10):30-32 (in Chinese) doi: 10.3787/j.issn.1000-0976.2010.10.007
[18]	张广明, 刘勇, 刘建东等.页岩储层体积压裂的地应力变化研究.力学学报, 2015, 47(6):965-972 doi: 10.6052/0459-1879-15-274 Zhang Guangming, Liu Yong, Liu Jiandong, et al. Research on the geostress change of shale reservoir volume fracturing. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(6):965-972 (in Chinese) doi: 10.6052/0459-1879-15-274
[19]	陈昀, 金衍, 陈勉.基于能量耗散的岩石脆性评价方法.力学学报, 2015, 47(6):984-993 doi: 10.6052/0459-1879-15-156 Chen Yun, Jin Yan, Chen Mian. A rock brittleness evaluation method based on energy dissipation. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(6):984-993 (in Chinese) doi: 10.6052/0459-1879-15-156
[20]	隋丽丽, 杨永明, 鞠杨等.岩石可压裂性分形描述方法初探.力学与实践, 2014, 36(6):753-756 doi: 10.6052/1000-0879-14-025 Sui Lili, Yang Yongming, Ju Yang, et al. Fractal description of rock fracture behavior. Mechanics in Engineering, 2014, 36(6):753-756 (in Chinese) doi: 10.6052/1000-0879-14-025
[21]	Chong KK, Grieser WV, Passman A. A completions guide book to shale-play development:A review of successful approaches toward shale-play stimulation in the last two decades//Proc. of Canadian Unconventional Resources and International Petroleum Conference, Calgary, Alberta, Canada, SPE133874, 2010
[22]	曾青冬, 姚军, 孙致学.页岩气藏压裂缝网扩展数值模拟.力学学报, 2015, 47(5):994-999 http://lxxb.cstam.org.cn/CN/abstract/abstract145444.shtml Zeng Qingdong, Yao Jun, Sun Zhixue. Numerical modeling of fracture network propagation in shale reservoirs. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(5):994-999 (in Chinese) http://lxxb.cstam.org.cn/CN/abstract/abstract145444.shtml
[23]	魏明强, 段永刚, 方全堂等.页岩气藏孔渗结构特征和渗流机理研究现状.油气藏评价与开发, 2011, 1(4):73-77 http://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ201104016.htm Wei Mingqiang, Duan Yonggang, Fang Quantang, et al. Current research situation of porosity & permeability characteristics and seepage mechanism of shale gas reservoir. Reservoir Evaluation and Development, 2011, 1(4):73-77 (in Chinese) http://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ201104016.htm
[24]	Loucks RG, Reed RM, Ruppel SC, et al. Morphology, genesis, and distribution of nanometer-scale pores in siliceous. Mudstones of the Mississippian Barnett Shale. Journal of Sedimentary Research, 2009, 79(11-12):848-861 https://www.researchgate.net/profile/Robert_Reed6/publication/228685286_Morphology_Genesis_and_Distribution_of_Nanometer-Scale_Pores_in_Siliceous_Mudstones_of_the_Mississippian_Barnett_Shale/links/0a85e52f4ece9a3192000000.pdf?disableCoverPage=true
[25]	樊冬艳, 姚军, 孙海等.考虑多重运移机制耦合页岩气藏压裂水平井数值模拟.力学学报, 2015, 47(6):906-915 doi: 10.6052/0459-1879-15-064 Fan Dongyan, Yao Jun, Sun Hai, et al. Numerical simulation of multi-fractured horizontal well in shale gas reservoir considering multiple gas transport mechanisms. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(6):906-915 (in Chinese) doi: 10.6052/0459-1879-15-064
[26]	邹才能, 朱如凯, 吴松涛等.常规与非常规油气聚集类型, 特征, 机理及展望——以中国致密油和致密气为例.石油学报, 2012, 33(2):173-187 doi: 10.7623/syxb201202001 Zou Caineng, Zhu Rukai, Wu Songtao, et al. Types, Characteristics, genesis and prospects of conventional and unconventional hydrocarbon accumulations:taking tight oil and tight gas in China as an instance. Acta Petrolei Sinica, 2012, 33(2):173-187 (in Chinese) doi: 10.7623/syxb201202001
[27]	李道伦, 郑德温, 方朝合等.页岩气井组分比例变化规律研究.力学学报, 2015, 47(6):899-905 doi: 10.6052/0459-1879-15-129 Li Daolun, Zheng Dewen, Fang Chaohe, et al. Sensitivity study of flowing gas composition for wells in shale gas reservoir. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(6):899-905 (in Chinese) doi: 10.6052/0459-1879-15-129
[28]	张东晓, 杨婷云.页岩气开发综述.石油学报, 2013, 34(4):792-801 doi: 10.7623/syxb201304023 Zhang Dongxiao, Yang Tingyun. An overview of shale-gas production. Acta Petrolei Sinica, 2013, 34(4):792-801 (in Chinese) doi: 10.7623/syxb201304023