氢抑制条件下的有机质热演化动力学模型——以三塘湖盆地芦草沟组为例
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摘要
三塘湖盆地马朗凹陷芦草沟组烃源岩含有较多的富氢组分,有机质的热演化受到氢抑制。为了模拟氢抑制背景下的有机质热演化史,在经典的Sweeny和Burham Easy%R_o时-温双控化学动力学模型基础上,本文考虑氢抑制对有机质热演化的影响,根据氢指数调节反应活化能,建立了描述有机质热演化的时-温-氢抑制多控化学动力学模型。研究结果表明,芦草沟组氢抑制对Ro的贡献值为0.2%左右;由于氢抑制的影响,芦草沟组烃源岩进入生烃门限和开始大量生烃的时间均被延迟。文中新建立的化学动力学模型可以应用于各种类型干酪根的有机质热演化史模拟,其精度更高、应用范围更广。
Organic matters of the source rocks in the Lucaogou Formation of the Malang Sag,Santanghu Basin are rich in hydrogen components,which suppresses the thermal evolution of organic matters.To simulate thermal evolution of organic matters,a new kinetic model of organic thermal evolution under the condition of hydrogen suppression was established integrating time,temperature,and hydrogen retardation based on Sweeny and Burham Easy % Rotime and temperature controlling kinetic model.In the new kinetic model,activity energies are adjusted by hydrogen index.The results show that hydrogen suppression contributes to 0.2% of R_o value in the Lucaogou Formation.Hydrogen suppression also resulted in delays of both initial generation of hydrocarbons and peak generation of hydrocarbons.This new established model is widely applicable to thermal histories for different kerogen types with higher accuracy.
Organic matters of the source rocks in the Lucaogou Formation of the Malang Sag,Santanghu Basin are rich in hydrogen components,which suppresses the thermal evolution of organic matters.To simulate thermal evolution of organic matters,a new kinetic model of organic thermal evolution under the condition of hydrogen suppression was established integrating time,temperature,and hydrogen retardation based on Sweeny and Burham Easy % Rotime and temperature controlling kinetic model.In the new kinetic model,activity energies are adjusted by hydrogen index.The results show that hydrogen suppression contributes to 0.2% of R_o value in the Lucaogou Formation.Hydrogen suppression also resulted in delays of both initial generation of hydrocarbons and peak generation of hydrocarbons.This new established model is widely applicable to thermal histories for different kerogen types with higher accuracy.
引文
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[15]Zou Y,Peng P.Overpressure retardation of organic-matter maturation:a kinetic model and its application[J].Marine and Petroleum Geology,2001,18:707-713.
[16]肖丽华,盂元林,张连雪,等.超压地层中镜质组反射率的计算[J].石油勘探与开发,2005,32(1):14-17.Xiao Lihua,Meng Yuanlin,Zhang Lianxue,et al.Vitrinite reflectance modeling in the pressured formations[J].Petroleum Exploration and Development,2005,32(1):14-17.
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[21]Leigh C P,Charles E B.Suppression of vitrinite reflectance inamorphous rich kerogen-amajor unrecognized problem[J].Journal of Petroleum Geology,1985,8(1):59-84.
[22]Hao F,Chen J.The cause and mechanism of vitrinite refletance anomolies[J].Journal of Petroleum Geology,1992,15(4):419-434.
[23]Lo H B.Correction criteria for the suppression of vitrinite reflectance in hydrogen-rich kerogens:preliminary guidelines[J].Organic Geochemistry,1993,20(6):653-657.
[24]Dow W G.Kerogen studies and geological interpretations[J].Journal of Geochemical Exploration,1977,7:79-99.
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[26]李新宁,马强,梁辉,等.三塘湖盆地芦草沟组二段混积岩致密油地质特征及勘探潜力[J].石油勘探与开发,2015,42(6):1-9.Li Xinning,Ma Qiang,Liang Hui,et al.Geological characteristics and exploration potential of diamictite tight oil in the second Member of the Permian Lucaogou Formation,Santanghu Basin[J].Petroleum Exploration and Development,2015,42(6):1-9.
[27]国建英,钟宁宁,梁浩,等.三塘湖盆地中二叠统原油的来源及其分布特征[J].地球化学,2012,41(3):266-277.Guo Jianying,Zhong Ningning,Liang Hao,et al.Study on the source and distribution of Middle Permian oils in the Santanghu Basin[J].Geochimica,2012,41(3):266-277.
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[29]李新宁.三塘湖盆地芦草沟组页岩油藏地质特征与勘探开发潜力[R].2011,中国石油吐哈油田分公司勘探开发研究院.Li Xinning.Geologic characteristics and exploration and development potential of the Lucaogou shale oil play in Santanghu Basin[R].2011,Exploration and Development Institute of Tuha Oil-field Branch,Petrochina.
[30]黄志龙,马剑,吴红烛,等.马朗凹陷芦草沟组页岩油流体压力与初次运移特征[J].中国石油大学学报(自然科学版),2012,36(5):7-11Huang Zhilong,Ma Jian,Wu Honghu,et al.Fluid pressure and primary migration characteristics of shale oil of Lucaogou formation in Malang sag[J].Journal of China University of Petroleum,2012,36(5):7-11.
[31]张菊明,熊亮萍.有限单元法在地热研究中的应用[M].北京:科学出版社,1986:15-22.Zhang Juming,Xiong Liangping.The applications of finite element in geothermal researches[M].Beijing:Science Press,1986:15-22.
[32]肖丽华,张靖,孟元林,等.地热参数及边界条件的探讨[J].大庆石油学院学报,1996,20(2):28-31.Xiao Lihua,Zhang Jing,Meng Yuanlin,et al.Study of geothermal parameters and boundary conditions[J].Journal of Daqing Petroleum Institute,1996,20(2):28-31.
[33]Meng Y L,Xiao L H,Zhang J.Basin modeling by gravity,magnetics and electrical information and its application[C].//Liu B.T.,Li S.T.eds.Basin analysis,global sedimentary geology and sedimentology.Amsterdam:VSP,1997:97-207.
[34]崔军平,任战利,李金翔,等.海拉尔盆地呼伦湖凹陷热演化史恢复[J].石油与天然气地质,2015,36(01):35-42.Cui Junping,Ren Zhanli,Li Jinxiang,et al.Reconstruction of geothermal history in Hulunhu Depression,Hailaer Basin[J].Oil&Gas Geology,2015,36(01):35-42.
[2]应凤祥,何东博,龙玉梅,等.SY/T5477-2003中华人民共和国石油天然气行业标准并碎屑岩成岩阶段划分[S].北京:石油工业出版社,2003:1-5.Ying Fengxiang,He Dongfu,Long Yumei,et al.Oil and gas industry standard of the People’s Republic of China:The division of diagentic stages in clastic rocks,SY/T5477-2003[S].Beijing:Petroleum Industry Press,2003:1-5.
[3]庞雄奇,付广,万龙贵,等.盖层封油气性综合定量评价—盆地模拟在盖层评价中的应用[M].北京:地质出版社,1993:14-17.Pang Xiongqi,Fu Guang,Wan Longgui,et al.Caprock sealing comprehensive quantitative assessment of oil and gas basin simulation applied in the evaluation of cap rock[M].Beijing:Geological Publishing House,1993:14-17.
[4]Hantschel T,Kauerauf I A.Fundamentals of basin and petroleum systems modeling[M].Berlin Heidelberg:Springer-Verlag,2009:169-176.
[5]孟元林,刘德来,贺如,等.歧北凹陷超压背景下的成岩场分析与储层孔隙度预测[J].沉积学报,2005,23(3):389-396.Meng Yuanlin,Liu Delai,He Ru,et al.Diagentic field analysis and porosity prediction of the Shaer member(Es2)in overpressure setting in the Qibei depression[J].Acta Sedimentologica Sinica,2005,23(3):389-396.
[6]孟元林,王粤川,罗宪婴,等.渤海湾盆地孔西潜山构造带成藏史数值模拟[J],地质力学学报,2005,11(1):11-16.Meng Yuanlin,Wang Yuechuan,Luo Xianying,et al.Reservoir forming history modeling of Kongxi buried hill,Bohaiwan Basin[J].Journal of Geomechanics,2005,11(1):11-16.
[7]黄文彪,邓守伟,卢双舫,等.松辽盆地南部扶余油层致密储层成岩序列及成藏期次[J].石油与天然气地质,2017,38(03):508-516.Huang Wenbiao,Deng Shouwei,Lu Shuangfang,et al.Diagenetic sequence and hydrocarbon accumulation phases of the Fuyu layer tight reservoir in the southern Songliao Basin[J].Oil&Gas Geology,2017,38(03):508-516.
[8]Sweeny J J,Burham A K.Evaluation of a simple model of vitrinite reflectance based on chemical kinetics[J].AAPGBulletin,1990,74:1559-1570.
[9]Mc Tavish R A.Pressure retardation of vitrinite diagenesis,offshore north—West Europe[J].Nature,1978,271(16):648-650.
[10]Hao F,Li S T,Dong W H,et al.Abnormal organic matter maturation in the Yinggehai Basin,offshore South China Sea:implications for hydrocarbon expulsion and fluid migration from overpressured systems[J].Journal of Petroleum Geology,1998,21:427-444.
[11]Huang W L.Experimental study of vitrinite maturation:effects of temperature,time,pressure,water,and hydrogen index[J].Organic Geochemistry,1996,24(2):233-241.
[12]Dalla T M,Mahlman F R,Ernt W G.Experimental study on the pressure dependence of vitrinite maturation[J].Organic Geochemistry,1997,61:2921-2928.
[13]王永诗,邱贻博.济阳坳陷超压结构差异性及其控制因素[J].石油与天然气地质,2017,38(03):430-437.Wang Yongshi,Qiu Yibo.Overpressure structure dissimilarity and its controlling factors in the Jiyang Depression[J].Oil&Gas Geology,2017,38(03):430-437.
[14]Carr A D.A vitrinite reflectance kinetic model incorporating overpres-sure retardation[J].Marine and Petroleum Geology,1999,16:355–377.
[15]Zou Y,Peng P.Overpressure retardation of organic-matter maturation:a kinetic model and its application[J].Marine and Petroleum Geology,2001,18:707-713.
[16]肖丽华,盂元林,张连雪,等.超压地层中镜质组反射率的计算[J].石油勘探与开发,2005,32(1):14-17.Xiao Lihua,Meng Yuanlin,Zhang Lianxue,et al.Vitrinite reflectance modeling in the pressured formations[J].Petroleum Exploration and Development,2005,32(1):14-17.
[17]Taylor G.H.The electron microscopy of vitrinites.In Coal Sciences(Edited by Gould R.F.)[D].Am.Chemical Society Publications,Washington,D.C.1966,274-283.
[18]Taylor G H,Liu S Y.Biodegradation in coals and other organic-rich rocks[J].Fuel,1987,66(9):1269-1273.
[19]Hutton A C,Cook A C.Influence of alginate on the reflectance of vitrinite from Joadja.NSW,and some other coals and oil shales containing alginite[J].Fuel,1980,59(10):711-714.
[20]Kalkreuth W D.Rank and petrolographic composition of selected Jurassic-Lower Cretaceous coals of British Columbia,Canada[J].Bulletin of Canadian Petroleum Geology,1982,30(2):112-139.
[21]Leigh C P,Charles E B.Suppression of vitrinite reflectance inamorphous rich kerogen-amajor unrecognized problem[J].Journal of Petroleum Geology,1985,8(1):59-84.
[22]Hao F,Chen J.The cause and mechanism of vitrinite refletance anomolies[J].Journal of Petroleum Geology,1992,15(4):419-434.
[23]Lo H B.Correction criteria for the suppression of vitrinite reflectance in hydrogen-rich kerogens:preliminary guidelines[J].Organic Geochemistry,1993,20(6):653-657.
[24]Dow W G.Kerogen studies and geological interpretations[J].Journal of Geochemical Exploration,1977,7:79-99.
[25]邹才能.非常规油气地质(第二版)[M].北京:石油工业出版社,2013:93-169.Zou Caineng.Unconventional petroleum geology(second edition)[M].Beijing:Petroleum Industry Press,2011.
[26]李新宁,马强,梁辉,等.三塘湖盆地芦草沟组二段混积岩致密油地质特征及勘探潜力[J].石油勘探与开发,2015,42(6):1-9.Li Xinning,Ma Qiang,Liang Hui,et al.Geological characteristics and exploration potential of diamictite tight oil in the second Member of the Permian Lucaogou Formation,Santanghu Basin[J].Petroleum Exploration and Development,2015,42(6):1-9.
[27]国建英,钟宁宁,梁浩,等.三塘湖盆地中二叠统原油的来源及其分布特征[J].地球化学,2012,41(3):266-277.Guo Jianying,Zhong Ningning,Liang Hao,et al.Study on the source and distribution of Middle Permian oils in the Santanghu Basin[J].Geochimica,2012,41(3):266-277.
[28]孟元林,张磊,李新宁,等.杂积岩地化特征与生烃机理—以三塘湖盆地芦草沟组为例,第十五届全国有机地球化学学术会议,青岛,2015.Meng Yuanlin,Zhang Lei,Li Xinning,et al.Mixed siliciclastic-volcaniclastic-carbonate sediments—taking Lu Caogou Formation of Santanghu Basin as an example,The 15thNational Meeting on Organic Geochemistry in China,Qingdao,2015.
[29]李新宁.三塘湖盆地芦草沟组页岩油藏地质特征与勘探开发潜力[R].2011,中国石油吐哈油田分公司勘探开发研究院.Li Xinning.Geologic characteristics and exploration and development potential of the Lucaogou shale oil play in Santanghu Basin[R].2011,Exploration and Development Institute of Tuha Oil-field Branch,Petrochina.
[30]黄志龙,马剑,吴红烛,等.马朗凹陷芦草沟组页岩油流体压力与初次运移特征[J].中国石油大学学报(自然科学版),2012,36(5):7-11Huang Zhilong,Ma Jian,Wu Honghu,et al.Fluid pressure and primary migration characteristics of shale oil of Lucaogou formation in Malang sag[J].Journal of China University of Petroleum,2012,36(5):7-11.
[31]张菊明,熊亮萍.有限单元法在地热研究中的应用[M].北京:科学出版社,1986:15-22.Zhang Juming,Xiong Liangping.The applications of finite element in geothermal researches[M].Beijing:Science Press,1986:15-22.
[32]肖丽华,张靖,孟元林,等.地热参数及边界条件的探讨[J].大庆石油学院学报,1996,20(2):28-31.Xiao Lihua,Zhang Jing,Meng Yuanlin,et al.Study of geothermal parameters and boundary conditions[J].Journal of Daqing Petroleum Institute,1996,20(2):28-31.
[33]Meng Y L,Xiao L H,Zhang J.Basin modeling by gravity,magnetics and electrical information and its application[C].//Liu B.T.,Li S.T.eds.Basin analysis,global sedimentary geology and sedimentology.Amsterdam:VSP,1997:97-207.
[34]崔军平,任战利,李金翔,等.海拉尔盆地呼伦湖凹陷热演化史恢复[J].石油与天然气地质,2015,36(01):35-42.Cui Junping,Ren Zhanli,Li Jinxiang,et al.Reconstruction of geothermal history in Hulunhu Depression,Hailaer Basin[J].Oil&Gas Geology,2015,36(01):35-42.