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| THERMOPHYSICAL EXPERIMENT AND NUMERICAL SIMULATION ON THERMAL CRACKING OF OIL SHALE AT HIGH TEMPERATURE |
| YU Yongjun1，2，LIANG Weiguo1，2，BI Jinglong1，2，GENG Yide1，2，KANG Zhiqin1，2，ZHAO Yangsheng1，2 |
| (1. Institute of Mining Technology，Taiyuan University of Technology，Taiyuan，Shanxi 030024，China；2. Key Laboratory of In-situ Property-improving Mining of Ministry of Education，Taiyuan University of Technology，Taiyuan，Shanxi 030024，China) |
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Abstract Thermal expansion and thermal conductivity instruments were used to measure the coefficients of thermal expansion(CTE) and thermal conductivity(TC) of Fushun oil shale in directions vertical and parallel to bedding. Experimental results were adopted in the simulation of thermal cracking based on the orthotropic assumption and one-way physical coupling. The CTE vertical to bedding was 1.69 times as much as that parallel to bedding，while the TC parallel to bedding was 1.83 times larger than that vertical to bedding direction. With the temperature increasing，the TC descended linearly while CTE fluctuated. KI varied when hydraulic fracturing dip changed，and KI reached the maximum when the dip was zero. The concept called the local effect during the thermal conducting was put forward to reflect the temperature distribution near the fractured area.
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| [1] 李 隽，汤达祯，薛华庆，等. 我国油页岩原位开采可行性初探[J]. 西南石油大学学报，2014，36(1)：59–64.(LI Juan，TANG Dazhen，XUE Huaqing，et al. Discussion of oil shale in-situ conversion process in China[J]. Journal of Southwest Petroleum University，2014，36(1)：59–64.(in Chinese))
[2] 钱家麟，尹 亮. 油页岩—石油的补充能源[M]. 北京：中国石化出版社，2008.(QIAN Jialin，YIN Liang. Oil shale—the supply resource for petroleum[M]. Beijing：China Sinnopec Press，2008.(in Chinese))
[3] 赵阳升，冯增朝，杨 栋，等. 对流加热油页岩开采油气的方法[P]. 中国：CN 1676870 B，2010.(ZHAO Yangsheng，FENG Zengchao，YANG Dong，et al. Method of convection heating oil shale for exploiting oil and gas[P]. China：CN 1676870 B，2010.(in Chinese))
[4] 赵延林，曹 平，赵阳升，等. 双重介质温度场–渗流场–应力场耦合模型及三维数值研究[J]. 岩石力学与工程学报，2007，26(增2)：4 025–4 031.(ZHAO Yanlin，CAO Ping，ZHAOYangsheng，et al. Dual media model for thermal-hydro-mechanical coupling and 3D numerical simulation[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(supp2)：4 025–4 031.(in Chinese))
[5] 赵阳升，杨 栋，冯增朝，等. 多孔介质多场耦合作用理论及其在资源与能源工程中的应用[J]. 岩石力学与工程学报，2008，27(7)：1 322–1 328.(ZHAO Yangsheng，FENG Zengchao，YANG Dong，et al. Multi-field coupling theory of porous media and its applications to resources and energy engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(7)：1 322–1 328.(in Chinese))
[6] 杨 栋，赵 静，康志勤，等. 电法原位加热油页岩采油技术与数值分析[J]. 辽宁工程技术大学学报，2010，29(3)：366–368.(YANG Dong，ZHAO Jing，KANG Zhiqin，et al. Technology and numerical analysis of in-situ electrical heating on oil shale[J]. Journal of Liaoning Technical University，2010，29(3)：366–368.(in Chinese))
[7] 康志勤，赵阳升，杨 栋. 利用原位电法加热技术开发油页岩的物理原理及数值分析[J]. 石油学报，2008，29(4)：593–595.(KANG Zhiqin，ZHAO Yangsheng，YANG Dong. Physical principle and numerical analysis of oil shale development using in-situ conversion process technology[J]. Acta Petrolei Sinica，2008，29(4)：593–595. (in Chinese))
[8] ZHANG Fan，PARKER JACK C. An efficient modeling approach to simulate heat transfer rate between fracture and matrix regions for oil shale retorting[J]. Transp Porous Med，2010，84：229–240.
[9] PANKAJ Tiwari，MILIND Deo. Compositional and kinetic analysis of oil shale pyrolysis using TGA-MS[J]. Fuel，2012，94：333–341.
[10] ESEME E，KROOSS B M，LITTKE R. Evolution of petrophysical properties of oil shale during high temperature compaction tests：implications of petroleum expulsion[J]. Marine and petroleum geology，2012，31：110–124.
[11] SUN Keming，TAN Jian，WU Di. The research on dynamic rules of crack extension during hydraulic fracturing for oil shale in-situ exploitation[J]. Procedia environmental sciences，2012，12：736–743.
[12] 杨庆生，杨 卫. 断裂过程的有限元模拟[J]. 计算力学学报，1997，14(4)：408–412.(YANG Qingsheng，YANG Wei. Finite element simulation of fracture process[J]. Chinese Journal of Computational Mechanics，1997，14(4)：408–412.(in Chinese))
[13] 黄干云，汪越胜，余寿文. 功能梯度材料的平面断裂力学分析[J]. 力学学报，2005，37(1)：2–8.(HUANG Ganyun，WANG Yuesheng，YU Shouwen. A new multi-layered model for in-plane fracture analysis of functionally granded materials[J]. Acta Mechanica Sinica，2005，37(1)：2–8.(in Chinese))
[14] PARKER W J，JENKINS R J，BUTLER C P，et al. Flash method of determining thermal diffusivity，heat capacity，and thermal conductivity[J]. Journal of Applied Physics，1961，32(9)：1679–1684.
[15] 赵 静，冯增朝，杨 栋，等. CT条件下油页岩内部孔裂隙分布特征[J]. 辽宁工程技术大学学报，2013，32(8)：1 045–1 049.(ZHAO Jing，FENG Zengchao，YANG Dong，et al. Study on distribution characteristics of pores and fissures inside oil shale under the CT experiment[J]. Journal of Liaoning Technical University，2013，32(8)：1 045–1 049.(in Chinese))
[16] 朱伯芳. 有限单元法原理与应用[M]. 北京：中国水利水电出版社，2009.(ZHU Bofang. The finite element method theory and applications[M]. Beijing：China WaterPower Press，2009.(in Chinese))
[17] 严轩辰. 农安和桦甸油页岩力学性能及水力压裂与破碎系数关键参数研究[D]. 吉林长春：吉林大学建设工程学院，2012.(YAN Xuanchen. Research on mechanical properties of oil shale in Nong’an and Huadian and key parameters of hydraulic fracturing and fragmentation[D]. Changchun，Jilin Province：College of Construction Engineering，Jilin University，2012.(in Chinese))
[18] SCHMIDT R A，Fracture mechanics of oil shale-unconfined fracture toughness，stress corrosion cracking，and tension test results[J]. The 18th U.S. Symposium on Rock Mechanics(USRMS) Golden，CO 1977，2A2-1–2A2-6.
[19] 赵延林，曹 平，王卫军. 裂隙岩体渗流–损伤–断裂耦合理论及工程应用[M]. 徐州：中国矿业大学出版社，2012.(ZHAO Yanlin，CAO Ping，WANG Weijun. Theory of seepage-damage-fracture coupling of fractured rock and its engineering applications[M]. Xuzhou：Chinese University of Mining and Technology Press，2012.(in Chinese))
[20] 康志勤. 油页岩热解特性及原位开采油气的模拟研究[D]. 山西太原：太原理工大学采矿工艺研究所，2008.(KANG Zhiqin. The pyrolysis characteristics and in-situ hot drive simulation research that exploit oil-gas of oil shale[D]. Taiyuan， Shanxi Province：Institute of Mining Technology， Taiyuan University of Technology，2008.(in Chinese)) |
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2015, Vol. 34 
