南海南部礼乐盆地深水区烃源岩生烃潜力研究
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摘要
礼乐盆地位于南海海域南部,拥有大面积深水区域,长期以来缺乏烃源岩生烃潜力方面的研究。在认识礼乐盆地构造—热演化特征的基础上,选用盆地内地震测线为研究对象,对盆地主要烃源岩热演化及生烃状态进行了研究。研究揭示:①礼乐盆地深水区烃源岩有机质热演化程度最高,现今已经达到生烃高峰,甚至湿气阶段,斜坡区热演化程度最低,尚未进入生烃阶段;②礼乐盆地白垩系烃源岩在深水区生烃潜力最大,与斜坡区存在量级差异;③礼乐盆地存在二次生烃过程,白垩系烃源岩的二次生烃发生在斜坡带和礼乐滩,古新统—始新统烃源岩的二次生烃发生在深水区。
Lile basin with large deep water acreage,located in the southern part of South China Sea,is short of petroleum research,especially researches on the hydrocarbon generation potential.Based on the knowledge of thermo-tectonic evolution,taking the significant seismic profile as research object,detailed study on the maturation and hydrocarbon generation of the major source rocks in the Lile basin has been carried out simulated.The result suggests that,in Lile basin:①Maturation of the source rocks is the highest in deep water,which reaches hydrocarbon generation peak or even wet gas stage.While the maturation is lowest in the slope area,which is still immature;②The Cretaceous source rocks have largest hydrocarbon generation potential in the deep water area while less in the slope area;③Secondary hydrocarbon generation exist in the Lile basin.The Cretaceous source rocks underwent secondary hydrocarbon generation in the slope and Rand Bank areas.The Paleocene-Eocene source rocks underwent such process in the deep water area.
Lile basin with large deep water acreage,located in the southern part of South China Sea,is short of petroleum research,especially researches on the hydrocarbon generation potential.Based on the knowledge of thermo-tectonic evolution,taking the significant seismic profile as research object,detailed study on the maturation and hydrocarbon generation of the major source rocks in the Lile basin has been carried out simulated.The result suggests that,in Lile basin:①Maturation of the source rocks is the highest in deep water,which reaches hydrocarbon generation peak or even wet gas stage.While the maturation is lowest in the slope area,which is still immature;②The Cretaceous source rocks have largest hydrocarbon generation potential in the deep water area while less in the slope area;③Secondary hydrocarbon generation exist in the Lile basin.The Cretaceous source rocks underwent secondary hydrocarbon generation in the slope and Rand Bank areas.The Paleocene-Eocene source rocks underwent such process in the deep water area.
引文
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[15]Zhang Li,Li Wencheng,Zeng Xianghui.Stratigraphic sequenceand hydrocarbon potential in Lile basin[J].Petroleum Geolo-gy&Experiment,2003,25(5):469-480.[张莉,李文成,曾祥辉.礼乐盆地地层发育特征及其与油气的关系[J].石油实验地质,2003,25(5):469-480.]
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[18]Zhang Li,Sha Zhibin,Wang Lifei.Hydrocarbon resources poten-tial of Mesozoic in Lile basin,northeastern Nansha sea areas[J].Marine Geology&Quaternary Geology,2007,27(4):97-102.[张莉,沙志彬,王立飞.南沙海域礼乐盆地中生界油气资源潜力[J].海洋地质与第四纪地质,2007,27(4):97-102.]
[19]Gao Hongfang,Zeng Xianghui,Liu Zhenhu,et al.Simulatingof subsidence history and analysis of tectonic evolution char-acteristics of Lile basin in South China Sea[J].Geotectonicaet Metallogenia,2005,29(3):385-390.[高红芳,曾祥辉,刘振湖,等.南海礼乐盆地沉降史模拟及构造演化特征分析[J].大地构造与成矿学,2005,29(3):385-390.]
[20]Liu Zhenhu.Distribution of sedimentary basins and petroleum po-tential in sourthern South China Sea[J].Geotectonica et Metallo-genia,2005,29(3):410-417.[刘振湖.南海南沙海域沉积盆地与油气分布[J].大地构造与成矿学,2005,29(3):410-417.]
[21]Zheng Zhixun.The petroleum geological survey of the Cenozoicbasins in sourthern Shouth China Sea[J].Foreign Marine Petrole-um,1993,40(3):124.[郑之逊,南海南部海域第三系沉积盆地石油地质概况[J].国外海上油气,1993,40(3):124.]
[22]He Lijuan,Xiong Liangping,Wang Jiyang.Heat flow and thermalhistory of the South China Sea[J].Physics of the Earth andPlanetary Interiors,2001,126:211-220.
[23]Shi Xiaobin,Qiu Xuelin,Xia Kanyuan,et al.Characteristics ofsurface heat flow in the South China Sea[J].Journal of AsianEarth Sciences,2003,22:265-277.
[24]He Lijuan.Mutiple tectono-thermal modeling of Liaohe basinin the Cenozoic[J].Chinese Journal of Geophysics,1999,42(1):75-82.[何丽娟.辽河盆地新生代多期构造热演化模拟[J].地球物理学报,1999,42(1):75-82.]
[25]He Lijuan.Advance in tectono-thermal modeling of sedimen-tary basins[J].Advance in Earth Sciences,2000,15(6):661-665.[何丽娟.沉积盆地构造热演化模拟的研究进展[J].地球科学进展,2000,15(6):661-665.]
[26]Yang Shuchun,Tong Zhigang,Hao Jianrong,et al.Tectono-thermal modeling of Lile basin,southern South China Sea[J].Geotectonica et Metallogenia,2009,33(3):359-364.[杨树春,仝志刚,郝建荣,等.南海南部礼乐盆地构造热演化研究[J].大地构造与成矿学,2009,33(3):359-364.]
[27]Sweeney J J,Burnham A K.Evaluation of a simple model ofvitrinite reflectance based on chemical kinetics[J].AAPGBulletin,1990,10:1559-1570.
[2]He Jiaxiong,Xia Bin,Shi Xiaobin,et al.Prospect and progress foroil and gas in deep waters of the world,and the potential and pros-pect foreground for oil and gas in deep waters of the South ChinaSea[J].Natural Gas Geoscience,2006,17(6):747-752.[何家雄,夏斌,施小斌,等.世界深水油气勘探进展与南海深水油气勘探前景[J].天然气地球科学,2006,17(6):747-752.]
[3]Zhang Zhiwu,Wu Shimin,Fan Kaiyi,et al.Evalution of hy-drocarbon resources and key exploration areas in Nanshablock,southern South China Sea[J].Geotectonica et Metallo-genia,2005,29(3):418-424.[张智武,吴世敏,樊开意,等.南沙海区沉积盆地油气资源评价及重点勘探地区[J].大地构造与成矿学,2005,29(3):418-424.]
[4]Yao Bochu,Wan Ling,Liu Zhenhu.Tectonic dynamics of Cenozoicsedimentary basins and hydrocarbon resources in the South ChinaSea[J].Earth Science:Journal of China University of Geosciences,2004,29(5):543-549.[姚伯初,万玲,刘振湖.南海海域新生代沉积盆地构造演化的动力学特征及其油气资源[J].地球科学:中国地质大学学报,2004,29(5):543-549.]
[5]Liu Hailing,Guo Lingzhi,Sun Yan,et al.Study on FractureSystems and Lithosphere Dynamics in Nansha Block[M].Bei-jing:Sciences Press,2002:8-32.[刘海龄,郭令智,孙岩,等.南沙地块断裂构造系统与岩石圈动力学研究[M].北京:科学出版社,2002:8-32.]
[6]Zhou Di,Wu Shimin,Chen Hanzong.Some remarks on the tecton-ic evolution of Nansha and its adjacent regions in southern SouthChina Sea[J].Geotectonica et Metallogenia,2005,29(3):339-345.[周蒂,吴世敏,陈汉宗.南沙海区及邻区构造演化动力学的若干问题[J].大地构造与成矿学,2005,29(3):339-345.]
[7]Taylor B,Hayes D E.The tectonic evolution of the South Chi-na Sea basin[C]//Hayes D E ed.The Tectonic and GeologicEvolution of Southeast Asian Seas and Islands.GeophysMonogr Set,23.Washington D C:AGU,1980.
[8]Taylor B,Hayes D E.Origin and history of the South ChinaSea basin[C]//Hayes D E ed.The Tectonic and Geologic E-volution of Southeast Asian Seas and Islands,Part 2.GeophysMonogr Set,27.Washington D C:AGU,1983.
[9]Holloway N H.North Palawan block philippines:Its relationto Asian mainland and role in evolution of South China Sea[J].AAPG Bulletin,1982,66(9):1355-1383.
[10]Zhou Di,Ru Ke,Chen Hanzong.Kinematics of Cenozoic ex-tension on the South China Sea continental margin and its im-plications for the tectonic evolution of the region[J].Tectono-physics,1995,251:161-177.
[11]Hutchison C S.Marginal basin evolution:The southern South Chi-na Sea[J].Marine and Petroleum Geology,2004,21:1129-1148.
[12]Schliiter H U,Hinz K,Block M.Tectono-stratigraphic terra-nes and detachment faulting of the South China Sea and Sulusea[J].Marine Geology,1996,130:39-78.
[13]Yan Ping,Liu Hailing.Tectonic stratigraphic division andblind fold structures in Nansha waters,South China Sea[J].Journal of Asian Earth Sciences,2004,24:337-348.
[14]Sun Longtao,Sun Zhen,Zhou Di,et al.Stratigraphy and struc-ture of Lile basin in Nansha area[J].Geotectonica et Metallo-genia,2008,32(2):151-158.[孙龙涛,孙珍,周蒂,等.南沙海区礼乐盆地沉积地层与构造特征分析[J].大地构造与成矿学,2008,32(2):151-158.]
[15]Zhang Li,Li Wencheng,Zeng Xianghui.Stratigraphic sequenceand hydrocarbon potential in Lile basin[J].Petroleum Geolo-gy&Experiment,2003,25(5):469-480.[张莉,李文成,曾祥辉.礼乐盆地地层发育特征及其与油气的关系[J].石油实验地质,2003,25(5):469-480.]
[16]Zhang Li,Li Wencheng,Li Guoying,et al.Hydrocarbon-gen-eration system characteristics of Lile basin[J].Natural GasIndustry,2004,24(6):22-24.[张莉,李文成,李国英,等.礼乐盆地生烃系统特征[J].天然气工业,2004,24(6):22-24.]
[17]Zhang Li,Li Wencheng,Li Guoying,et al.Analysis of staticgeological elements of petroleum-bearing combinations in theLile basin,northeastern Nansha[J].Chinese Geology,2004,31(3):320-324.[张莉,李文成,李国英,等.南沙东北部海域礼乐盆地含油气组合静态地质要素分析[J].中国地质,2004,31(3):320-324.]
[18]Zhang Li,Sha Zhibin,Wang Lifei.Hydrocarbon resources poten-tial of Mesozoic in Lile basin,northeastern Nansha sea areas[J].Marine Geology&Quaternary Geology,2007,27(4):97-102.[张莉,沙志彬,王立飞.南沙海域礼乐盆地中生界油气资源潜力[J].海洋地质与第四纪地质,2007,27(4):97-102.]
[19]Gao Hongfang,Zeng Xianghui,Liu Zhenhu,et al.Simulatingof subsidence history and analysis of tectonic evolution char-acteristics of Lile basin in South China Sea[J].Geotectonicaet Metallogenia,2005,29(3):385-390.[高红芳,曾祥辉,刘振湖,等.南海礼乐盆地沉降史模拟及构造演化特征分析[J].大地构造与成矿学,2005,29(3):385-390.]
[20]Liu Zhenhu.Distribution of sedimentary basins and petroleum po-tential in sourthern South China Sea[J].Geotectonica et Metallo-genia,2005,29(3):410-417.[刘振湖.南海南沙海域沉积盆地与油气分布[J].大地构造与成矿学,2005,29(3):410-417.]
[21]Zheng Zhixun.The petroleum geological survey of the Cenozoicbasins in sourthern Shouth China Sea[J].Foreign Marine Petrole-um,1993,40(3):124.[郑之逊,南海南部海域第三系沉积盆地石油地质概况[J].国外海上油气,1993,40(3):124.]
[22]He Lijuan,Xiong Liangping,Wang Jiyang.Heat flow and thermalhistory of the South China Sea[J].Physics of the Earth andPlanetary Interiors,2001,126:211-220.
[23]Shi Xiaobin,Qiu Xuelin,Xia Kanyuan,et al.Characteristics ofsurface heat flow in the South China Sea[J].Journal of AsianEarth Sciences,2003,22:265-277.
[24]He Lijuan.Mutiple tectono-thermal modeling of Liaohe basinin the Cenozoic[J].Chinese Journal of Geophysics,1999,42(1):75-82.[何丽娟.辽河盆地新生代多期构造热演化模拟[J].地球物理学报,1999,42(1):75-82.]
[25]He Lijuan.Advance in tectono-thermal modeling of sedimen-tary basins[J].Advance in Earth Sciences,2000,15(6):661-665.[何丽娟.沉积盆地构造热演化模拟的研究进展[J].地球科学进展,2000,15(6):661-665.]
[26]Yang Shuchun,Tong Zhigang,Hao Jianrong,et al.Tectono-thermal modeling of Lile basin,southern South China Sea[J].Geotectonica et Metallogenia,2009,33(3):359-364.[杨树春,仝志刚,郝建荣,等.南海南部礼乐盆地构造热演化研究[J].大地构造与成矿学,2009,33(3):359-364.]
[27]Sweeney J J,Burnham A K.Evaluation of a simple model ofvitrinite reflectance based on chemical kinetics[J].AAPGBulletin,1990,10:1559-1570.
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