渤海湾盆地黄骅坳陷乌马营潜山内幕原生油气藏形成特征
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摘要
钻于渤海湾盆地黄骅坳陷乌马营潜山构造带之上的营古1井在二叠系下石盒子组砂岩获非含H2S高产油气流,油气来源于上古生界煤系烃源岩,属于潜山内幕原生油气藏,展现出古生界潜山内幕原生油气良好的勘探前景。通过原生油气藏的烃源条件、潜山内幕储盖组合与油气成藏时间研究,论述了乌马营潜山内幕原生油气藏的形成与聚集特征。乌马营潜山内幕原生油气藏具有煤系烃源岩二次规模生气、潜山内幕多储盖组合叠置发育、晚期油气充注为主3大优势成藏条件,形成了古生界潜山内幕源上砂岩和源下碳酸盐岩复式油气聚集。伴随中、新生代多期构造活动,乌马营潜山内幕原生油气藏的形成具有"早期油气混注局部成藏,中期高点迁移调整成藏,晚期天然气规模充注复式成藏"的特征。图7参30
Well Yinggu 1 drilled on the tectonic belt of Wumaying buried-hill in Huanghua Depression obtained non-H2 S high-yield oil and gas flow from the Permian Lower Shihezi Formation sandstone. The oil and gas are derived from the Upper Paleozoic coal source rock, the petroleum reservoir is an inner buried-hill primary oil and gas accumulation, showing a good prospect of the Paleozoic inner buried-hill primary reservoir exploration. The formation and accumulation of the primary petroleum reservoir in the Wumaying inner buried-hill are discussed by studying the primary source conditions, the inner buried-hill reservoir-cap combinations and the hydrocarbon accumulation period. The primary petroleum reservoir has three preponderant characteristics of accumulation: secondary large-scale gas generation of coal source rock, multi reservoir-cap combinations and mainly late hydrocarbon charging, which formed the compound hydrocarbon accumulation of the above-source sandstone and under-source carbonate rock in the Paleozoic inner buried-hill. Along with the Mesozoic and Cenozoic tectonic activities, the formation of the primary reservoir in Wumaying inner buried-hill is characterized by "mixed oil and gas charge in local parts in early stage, adjustment accumulation due to structural high migration in middle stage, and large-scale natural gas charge and compound accumulation in late stage".
Well Yinggu 1 drilled on the tectonic belt of Wumaying buried-hill in Huanghua Depression obtained non-H2 S high-yield oil and gas flow from the Permian Lower Shihezi Formation sandstone. The oil and gas are derived from the Upper Paleozoic coal source rock, the petroleum reservoir is an inner buried-hill primary oil and gas accumulation, showing a good prospect of the Paleozoic inner buried-hill primary reservoir exploration. The formation and accumulation of the primary petroleum reservoir in the Wumaying inner buried-hill are discussed by studying the primary source conditions, the inner buried-hill reservoir-cap combinations and the hydrocarbon accumulation period. The primary petroleum reservoir has three preponderant characteristics of accumulation: secondary large-scale gas generation of coal source rock, multi reservoir-cap combinations and mainly late hydrocarbon charging, which formed the compound hydrocarbon accumulation of the above-source sandstone and under-source carbonate rock in the Paleozoic inner buried-hill. Along with the Mesozoic and Cenozoic tectonic activities, the formation of the primary reservoir in Wumaying inner buried-hill is characterized by "mixed oil and gas charge in local parts in early stage, adjustment accumulation due to structural high migration in middle stage, and large-scale natural gas charge and compound accumulation in late stage".
引文
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[5]周立宏,李三忠,刘建忠,等.渤海湾盆地区燕山期构造特征与原型盆地[J].地球物理学进展,2003,18(4):692-699.ZHOU Lihong,LI Sanzhong,LIU Jianzhong,et al.The Yanshanian structural style and basin prototypes of the Mesozoic Bohai Bay Basin[J].Progress in Geophysics,2003,18(4):692-699.
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[7]杨华,付金华,刘新社,等.鄂尔多斯盆地上古生界致密气成藏条件与勘探开发[J].石油勘探与开发,2012,39(3):295-303.YANG Hua,FU Jinhua,LIU Xinshe,et al.Accumulation conditions and exploration and development of tight gas in the Upper Paleozoic of the Ordos Basin[J].Petroleum Exploration and Development,2012,39(3):295-303.
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[9]邹才能,杨智,何东博,等.常规-非常规天然气理论?技术及前景[J].石油勘探与开发,2018,45(4):575-587.ZOU Caineng,YANG Zhi,HE Dongbo,et al.Theory,technology and prospects of conventional and unconventional natural gas[J].Petroleum Exploration and Development,2018,45(4):575-587.
[10]赵贤正,金凤鸣,崔周旗,等.冀中坳陷隐蔽型潜山油藏类型与成藏模拟[J].石油勘探与开发,2012,39(2):137-143.ZHAO Xianzheng,JIN Fengming,CUI Zhouqi,et al.Types of subtle buried-hill oil reservoirs and their accumulation simulation in Jizhong Depression,Bohai Bay Basin[J].Petroleum Exploration and Development,2012,39(2):137-143.
[11]ZHAO Xianzheng,JIN Fengming,WANG Quan,et al.Buried-hill play,Jizhong subbasin,Bohai Bay Basin:A review and future prospectivity[J].AAPG Bulletin,2015,99(1):1-26.
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[15]国建英,李剑,于学敏,等.黄骅坳陷大港探区深层天然气成因类型与分布规律[J].石油学报,2013,34(S1):112-119.GUO Jianying,LI Jian,YU Xuemin,et al.Origin and distribution of deep natural gas in Dagang exploration area of Huanghua Depression[J].Acta Petrolei Sinica,2013,34(S1):112-119.
[16]张亚光,杨子玉,肖枚,等.乌马营潜山天然气藏地质地球化学特征和成藏过程[J].天然气地球科学,2003,14(4):283-286.ZHANG Yaguang,YANG Ziyu,XIAO Mei,et al.The geological characteristics of Qianmiqiao buried hill condensated pool[J].Natural Gas Geoscience,2003,14(4):283-286.
[17]周立宏,滑双君,孙超囡,等.大港油田上古生界煤系烃源岩地球化学特征与二次成烃[J].石油与天然气地质,2017,38(6):1043-1051.ZHOU Lihong,HUA Shuangjun,SUN Chaonan,et al.Geochemical characteristics and secondary hydrocarbon generation of coal-measure source rocks in Upper Paleozoic of Dagang oilfield[J].Oil&Gas Geology,2017,38(6):1043-1051.
[18]ZHAO Xianzheng,ZHOU Lihong,PU Xiugang,et al.Hydrocarbongenerating potential of the upper Paleozoic section of the Huanghua Depression,Bohai Bay Basin,China[J].Energy&Fuels,2018,32:12351-12364.
[19]张英利,赵长毅,孟元林,等.黄骅坳陷上古生界油气成藏史数值模拟[J].石油学报,2006,27(1):24-29.ZHANG Yingli,ZHAO Changyi,MENG Yuanlin,et al.Numerical simulation of upper Paleozoic pool-forming history in Huanghua Depression[J].Acta Petrolei Sinica,2006,27(1):24-29.
[20]朱炎铭,秦勇,王猛,等.黄骅坳陷石炭-二叠纪煤成烃演化的构造控制[J].中国矿业大学学报,2006,35(3):283-287.ZHU Yanming,QIN Yong,WANG Meng,et al.Tectonic control on the hydrocarbon-generation evolution of Permo-Carboniferous coal in Huanghua Depression[J].Journal of China University of Mining&Technology,2006,35(3):283-287.
[21]邱楠生,左银辉,常健,等.中国东西部典型盆地中-新生代热体制对比[J].地学前缘,2015,22(1):157-168.QIU Nansheng,ZUO Yinhui,CHANG Jian,et al.Characteristics of Meso-Cenozoic thermal regimes in typical eastern and western sedimentary basins of China[J].Earth Science Frontiers,2015,22(1):157-168.
[22]李明诚,李伟,蔡峰,等.油气成藏保存条件的综合研究[J].石油学报,1997,18(2):41-48.LI Mingcheng,LI Wei,CAI Feng,et al.Integrative study of preservation conditions of oil and gas pools[J].Acta Petrolei Sinica,1997,18(2):41-48.
[23]张文淮,陈紫英.流体包裹体地质学[M].北京:中国地质大学出版社,1993.ZHANG Wenhuai,CHEN Ziying.Geology of fluid inclusion[M].Beijing:China University of Geosciences Press,1993.
[24]王飞宇,金之钧,吕修祥,等.含油气盆地成藏期分析理论和新方法[J].地球科学进展,2002,17(5):754-762.WANG Feiyu,JIN Zhijun,LYU Xiuxiang,et al.Timing of petroleum accumulation:Theory and new methods[J].Advance in Earth Sciences,2002,17(5):754-762.
[25]DELRIO C J.Nature and geochemistry of high molecular weight hydrocarbons(above 40)in oils and solid bitumens[J].Organic Geochemistry,1992,18:541-554.
[26]LOMANDO A J.The influence of solid reservoir bitumen on reservoir quality[J].AAPG Bulletin,1992,76(8):1137-1152.
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