李文华;房晓红;李彬;曾凡桂;

• 1:太原理工大学地球科学与工程系

• 2:太原理工大学新材料界面科学与工程教育部重点实验室

• 3:内蒙古煤炭地质调查院

摘要(Abstract)：

为了解CH4和CO2在页岩储层蒙脱石中的吸附机理及其相互关系,运用分子力学(Molecular Mechanics,MM)方法得到Na-蒙脱石、CH4和CO2的最优构型,采用巨正则蒙特卡洛(Grand Canonical Monte Carlo,GCMC)方法计算不同埋深下蒙脱石对CH4、CO2和CH4/CO2的吸附性能,地温梯度为30K/km,压力梯度为15MPa/km.模拟结果表明:吸附量随温度和压力的升高先急剧增加后缓慢减小;蒙脱石吸附CH4和CO2为物理吸附,页岩气藏埋深为2~4km时页岩储层蒙脱石中CH4吸附气大量聚集,利用CO2置换技术开采页岩气的最佳深度约为2km,埋深约为4km时效果最差.该研究可为页岩气的勘探开发提供依据.

关键词(KeyWords)：蒙脱石;页岩气;吸附;分子模拟;吸附能;吸附量

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金项目(41072116,41102092,41103052)

作者(Author):李文华;房晓红;李彬;曾凡桂;

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参考文献(References)：

• [1]童晓光.大力提高天然气在能源构成中比例的意义和可能性[J].天然气工业,2010,30(10):1-6.Tong Xiaoguang.Significance and possibilities of improving the percentage of natural gas in energy structure in China[J].Natural Gas Industry,2010,30(10):1-6.

• [2]胡文瑞.中国非常规天然气资源开发与利用[J].大庆石油学院学报,2010,34(5):9-16.Hu Wenrui.Development and utilization of non-conventional natural gas resources in China[J].Journal of Northeast Petroleum University,2010,34(5):9-16.

• [3]Curtis J B.Fractured shale-gas system[J].AAPG Bull,2002,86(11):1921-1938.

• [4]蒋裕强,董大忠,漆麟,等.页岩气储层的基本特征及其评价[J].天然气工业,2010,30(10):7-12.Jiang Yuqiang,Dong Dazhong,Qi Lin,et al.Basic features and evaluation of shale gas reservoirs[J].Natural Gas Industry,2010,30(10):7-12.

• [5]吉利明,邱军利,夏艳青,等.常见黏土矿物电镜扫描微孔隙特征与甲烷吸附性[J].石油学报,2012,33(2):249-256.Ji Liming,Qiu Junli,Xia Yanqing,et al.Micro-pore characteristics and methane adsorption properties of common clay minerals by electron microscope scanning[J].Acta Petrolei Sinica,2012,33(2):249-256.

• [6]李建忠,董大忠,陈更生,等.中国页岩气资源前景与战略地位[J].天然气工业,2009,29(5):11-16.Li Jianzhong,Dong Dazhong,Chen Gengsheng,et al.Prospects and strategic position of shale gas resources in China[J].Natural Gas Industry,2009,29(5):11-16.

• [7]潘仁芳,黄晓松.页岩气及国内勘探前景展望[J].中国石油勘探,2009,14(3):1-5.Pan Renfang,Huang Xiaosong.Shale gas and its exploration prospects in China[J].China Petroleum Exploration,2009,14(3):1-5.

• [8]杨镱婷,张金川,王香增,等.陆相页岩气的泥页岩评价——以延长下寺湾区上三叠统延长组长7段为例[J].东北石油大学学报,2012,36(4):10-17.Yang Yiting,Zhang Jinchuan,Wang Xiangzeng,et al.Source rock evaluation of continental shale gas:A case study of Chang 7of Mesozoic Yanchang formation in Xia siwan area of Yanchang[J].Journal of Northeast Petroleum University,2012,36(4):10-17.

• [9]翟光明.关于非常规油气资源勘探开发的几点思考[J].天然气工业,2008,28(10):1-3.Zhai Guangming.Speculation on the exploration and development of unconventional hydrocarbon resources[J].Natural Gas Industry,2008,28(10):1-3.

• [10]李登华,李建忠,王社教,等.页岩气藏形成条件分析[J].天然气工业,2009,29(5):22-26.Li Denghua,Li Jianzhong,Wang Shejiao,et al.Analysis of controls on gas shale reservoirs[J].Natural Gas Industry,2009,29(5):22-26.

• [11]王兰生,廖仕孟,陈更生,等.中国页岩气勘探开发面临的问题与对策[J].天然气工业,2011,31(12):119-122.Wang Lansheng,Liao Shimeng,Chen Gengsheng,et al.Bottlenecks and countermeasures in shale gas exploration and development of China[J].Natural Gas Industry,2011,31(12):119-122.

• [12]Chen Shangbin,Zhu Yanming,Wang Hongyan,et al.Shale gas reservoir characterization:A typical case in the southern Sichuan basin of China[J].Energy,2011,36(11):6609-6616.

• [13]Zou Caineng,Dong Dazhong,Wang Shejiao,et al.Geological characteristics and resource potential of shale gas in China[J].Petroleum Exploration and Development,2010,37(6):641-653.

• [14]Titiloye J O,Skipper N T.Molecular dynamics simulation of methane in sodium montmorillonite clay hydrates at elevated pressures and temperatures[J].Molecular Physics,2001,99(10):899-906.

• [15]Titiloye J O,Skipper N T.Monte Carlo and molecular dynamics simulations of methane in potassium montmorillonite clay hydrates at elevated pressures and temperatures[J].Journal of Colloid and Interface Science,2005,282(2):422-427.

• [16]Zhou Qing,Lu Xiancai,Liu Xiandong,et al.Hydration of methane intercalated in Na-smectites with distinct layer charge:Insinghts from molecular simulation[J].Journal Colloid and Interface Science,2001,355(1):237-242.

• [17]王社教,王兰生,黄金亮,等.上扬子区志留系页岩气成藏条件[J].天然气工业,2009,29(5):45-50.Wang Shejiao,Wang Lansheng,Huang Jinliang,et al.Accumulation conditions of shale gas reservoirs in Silurian of the upper Yangtzl Region[J].Natural Gas Industry,2009,29(5):45-50.

• [18]潘兆橹,万扑.应用矿物学[M].武汉:武汉工业大学出版,1993:219-221.Pan Zhaolu,Wan Pu.Applied mineralogy[M].Wuhan:Wuhan University of Technology,1993:219-221.

• [19]Smith D E.Molecule computer simulations of interlayer swelling properties and interlayer structure of cesium montmorillonite[J].Langmuir,1998,14(20):5959-5967.

• [20]Jorgensen W L,Chandrasekhar J,Madura J D,et al.Comparison of simple potential functions for simulating liquid water[J].The Journal of Chemical Physics,1983,79(2):926-933.

• [21]Marry V,Turq P,Cartailler T,et al.Microscopic simulation of structure and dynamics of water and counterions in a monohydrated montmorillonite[J].The Journal of Chemical Physics,2002,117(7):3454-3463.

• [22]Marry V,Turq P.Microscopic simulations of interlayer structure and dynamics in bihydrated heteroionic montmorillonites[J].The Journal of Chemical Physics,2003,107(8):1832-1839.

• [23]Young D A,Smith D E.Simulation of clay mineral swelling and hydration:Dependence upon interlayer ion size and charge[J].The Journal of Chemical Physics B,2002,104(39):9163-9170.

• [24]Guillot B.A reappraisal of what we have learnt during three decades of computer simulations on water[J].Journal of Molecular Liquids,2002,101(1-3):219-260.

• [25]那平,张帆,李艳妮.水化Na-蒙脱石和Na/Mg-蒙脱石的分子动力学模拟[J].物理化学学报,2006,22(9):1137-1142.Na Ping,Zhang Fan,Li Yanni.Molecular dynamics simulation of Na-montmorillonite and Na/Mg-montmorillonite hydrates[J].Acta Physico-Chimica Sinica,2006,22(9):1137-1142.

• [26]Kvenvolend K A.A review of the geochemistry of methane in natural gas hydrate[J].Organic Geochemistry,1995,23(11/12):997-1008.

• [27]Alexandra B,Benjamin R.Carbon dioxide in montmorillonite clay hydrates:Thermodynamics,structure,and transport from molecular simulation[J].The Journal of Chemical Physics C,2001,114(35):14962-14969.