松辽盆地泉头组三、四段河流相储层岩性油藏控制因素及分布规律
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摘要
依据大量钻井、测井、地震及实验室分析资料,应用陆相层序地层学、沉积地质学及油气成藏理论,通过成藏条件研究认识到,松辽盆地扶杨油层为河流相低孔、低渗储层,上覆的白垩系青山口组一段湖相泥岩既是烃源岩又是区域性盖层,因此具有上生下储式成藏特征。油?源对比表明,油气垂直下排最大距离可达550 m,平均约300 m。明水组沉积末期,盆地反转应力场产生了大量断穿烃源岩及扶杨油层的断层并在源岩及储层内产生大量裂缝,同时源岩进入生烃高峰期,于是在构造应力及生烃超压作用下油气沿断层及裂缝下排到扶杨油层而成藏。因此,明水组沉积末期成为油气成藏的主要时期。曲流河点砂坝具有较好的物性,是油气的主要储集体。受浅水湖泊形成的泥岩盖层影响,形成了两套含油层系,油藏主要发育在近油源的扶余油层,盆地范围内具有统一的油?水界面。青山口组一段高成熟烃源岩控制了油藏主要分布在中央坳陷区,较低的砂地比决定了扶杨油层以发育岩性油藏为主。
Based on data from drilling,logging,seismic and lab,we make a study of the Fuyang oil-bearing interval in Songliao Basin by using theories of continental sequence stratigraphy,sedimentary geology and hydrocarbon accumulation.The Fuyang oil-bearing interval in Songliao Basin is a low-porosity and low-permeability reservoir of fluvial facies.The overlapping mudstone of lacustrine facies in the 1st member of the Cretaceous Qingshankou Formation is both source rock and regional seal,and therefore hydrocarbons generated in the upper source rocks migrated downward and accumulated in the lower reservoirs.Oil-source correlation shows that ave-rage distance of downward vertical migration of hydrocarbons is 300 m with the longest distance of 500 m.At the end of the Mingshui Formation deposition,stress field inversion resulted in various faults cutting through source rocks and the Fuyang oil-bearing interval and many fractures inside the source rocks and reservoirs.At the same time,source rocks reached the peak of hydrocarbon generation.Driven by tectonic stress and overpressure due to hydrocarbon generation,the hydrocarbons migrated downward along the faults and fractures and accumulated in the Fuyang oil-bearing interval.Hence the major period for hydrocarbon accumulation is the late period of the Mingshui Formation deposition.With favorable reservoir quality,meandering river point bars are major reservoirs for oil and gas.The existence of mudstone seals of shallow lacustrine facies leads to the formation of two sets of oil-bearing intervals.Oil pools mainly developed in the Fuyang oil-bearing interval which was close to the oil source and have a uniform oil-water contact in the basin.High mature source rocks in the 1st member of the Qingshankou Formation determine that oil pools are mainly distributed in the central depression zone.Relatively low net-to-gross ratio leads to the predominance of lithlogic oil pools in the Fuyang oil-bearing interval.
Based on data from drilling,logging,seismic and lab,we make a study of the Fuyang oil-bearing interval in Songliao Basin by using theories of continental sequence stratigraphy,sedimentary geology and hydrocarbon accumulation.The Fuyang oil-bearing interval in Songliao Basin is a low-porosity and low-permeability reservoir of fluvial facies.The overlapping mudstone of lacustrine facies in the 1st member of the Cretaceous Qingshankou Formation is both source rock and regional seal,and therefore hydrocarbons generated in the upper source rocks migrated downward and accumulated in the lower reservoirs.Oil-source correlation shows that ave-rage distance of downward vertical migration of hydrocarbons is 300 m with the longest distance of 500 m.At the end of the Mingshui Formation deposition,stress field inversion resulted in various faults cutting through source rocks and the Fuyang oil-bearing interval and many fractures inside the source rocks and reservoirs.At the same time,source rocks reached the peak of hydrocarbon generation.Driven by tectonic stress and overpressure due to hydrocarbon generation,the hydrocarbons migrated downward along the faults and fractures and accumulated in the Fuyang oil-bearing interval.Hence the major period for hydrocarbon accumulation is the late period of the Mingshui Formation deposition.With favorable reservoir quality,meandering river point bars are major reservoirs for oil and gas.The existence of mudstone seals of shallow lacustrine facies leads to the formation of two sets of oil-bearing intervals.Oil pools mainly developed in the Fuyang oil-bearing interval which was close to the oil source and have a uniform oil-water contact in the basin.High mature source rocks in the 1st member of the Qingshankou Formation determine that oil pools are mainly distributed in the central depression zone.Relatively low net-to-gross ratio leads to the predominance of lithlogic oil pools in the Fuyang oil-bearing interval.
引文
[1]高瑞祺,蔡希源.松辽盆地油气田形成条件与分布规律[M].北京:石油工业出版社,1997:1-5.Gao Ruiqi,Cai Xiyuan.The formation conditions and distribu-tion regularities of the oil/gas field in Songliao Basin[M].Bei-jing:Petroleum Industry Press,1997:1-5.
[2]袁选俊,薛良清,池英柳,等.坳陷型湖盆层序地层特征与隐蔽油气藏勘探——以松辽盆地为例[J].石油学报,2003,24(3):11-15.Yuan Xuanjun,Xue Liangqing,Chi Yingliu,et al.Sequence stra-tigraphic and subtle-trap characteristics of lacustrine depressionbasin[J].Acta Petrolei Sinica,2003,24(3):11-15.
[3]牟雪梅,赵卫卫,查明.东营凹陷胜坨地区岩性油气藏物理模拟[J].石油与天然气地质,2010,31(2):219-224,231.Mu Xuemei,Zhao Weiwei,Zha Ming.Physical simulation of li-thologic reservirs in the Shengtuo area of the Dongying Depres-sion[J],Oil&Gas Geology,2010,31(2):219-224,231.
[4]Li Desheng.Basic characteristics of oil and gas basins in China[J].Journal of Southeast Asian Earth Sciences,1996,13(3-5):299-304.
[5]王竣,王东坡.东北亚沉积盆地的形成演化及其含油气远景[M].北京:地质出版社,1997:4-66.Wang Jun,Wang Dongpo.The formation and evolution of sedi-mentary basin and its oil and gas perspective on northeast Asia[M].Beijing:Geological Publishing House,1997:4-66.
[6]迟元林,云金表,蒙启安.松辽盆地深部结构及成盆动力学与油气运聚[M].北京:石油工业出版社,2002:52-126.Chi Yuanlin,Yun Jinbiao,Meng Qian.The deep formation andbasin-forming dynamics and hydrocarbon migration in Songli-ao Basin[M].Beijing:Petroleum Industry Press,2002:52-126.
[7]赵健.松辽盆地西斜坡泥岩地层压实规律[J].石油与天然气地质,2010,31(4):486-492.Zhao Jian.Laws of mudstone compactin on the west slop of theSongliao Basin[J].Oil&Gas Geology,2010,31(4):486-492.
[8]高瑞祺.松辽盆地白垩纪陆相沉积特征[J].地质学报,1980,54(1):9-26.Gao Ruiqi.The characteristics of continental sedimentation ofCretaceous of Songliao Basin[J].Acta Geologica Sinica,1980,54(1):9-26.
[9]王璞君,杜小弟,王竣,等.松辽盆地白垩纪年代地层研究及地层时代[J].地质学报,1995,69(4):25-29.Wang Pujun,Du Xiaodi,Wang Jun,et al.The chronostratigraphyand stratigraphic classification of the Cretaceous of the SongliaoBasin[J].Acta Geologica Sinica,1995,69(4):25-29.
[10]林春明,冯志强,张顺,等.松辽盆地北部白垩纪超层序特征[J].古地理学报,2007,9(6):619-134.Lin Chunming,Feng Zhiqiang,Zhang Shun,et al.Characteris-tics of the Cretaceous supersequences in northern Songliao Ba-sin[J].Journal of Palaeogeography,2007,9(6):619-134.
[11]黄薇,张顺,梁江平,等.松辽盆地沉积地层与成藏响应[J].大庆石油地质与开发,2009,28(5):18-22.Huang Wei,Zhang Shun,Liang Jiangping,et al.Sedimentarystrata and hydrocarbon accumulation response of Songliao Basin[J].Petroleum Geology and Oilfield Development in Daqing,2009,28(5):18-22.
[12]Feng Z Q,Jia C Z,Xie X N,et al,Tectonostratigraphic unitsand stratigraphic sequences of the nonmarine Songliao basin,northeast China[J].Basin Research,2010:22,79-95.
[13]Feng Z Q,Zhang S,Crossw T A,et al.Lacustrine turbiditechannels and fans in the Mesozoic Songliao Basin,China[J].Basin Research,2010,22:96-107.
[14]梁江平,辛仁臣,王树恒,等.松辽盆地中部含油组层序地层格架及介形类特征的响应[J].地层学杂志,2005,29(4):405-410.Liang Jiangping,Xin Renchen,Wang Shuheng,et al.Sequence-stratigraphic framework and its response to cypridea of the mid-dle oil-bearing beds of the Songliao Basin[J].Journal of Stra-tigraphy,2005,29(4):405-410.
[15]楼章华,谢鸿森,蔡希源,等.松辽盆地扶杨油层(K1q3+4)沉积环境[J].石油实验地质,1997,19(1):71-75.Lou Zhanghua,Xie Hongsen,Cai Xiyuan,et al.Sedimentary en-vironments of Fuyang oil reservoir(K1q3+4)in Songliao Basin[J].Experimental Petroleum Geology,1997,19(1):71-75.
[16]杜小弟,王璞君,王东坡.松辽盆地泉头组河流相沉积特征及古河流再造[J].岩相古地理,1991,11(3):15-21.Du Xiaodi,Wang Pujun,Wang Dongpo.Sedimentary character-istics of the fluvial facies and palaeochannel reconstruction ofthe Quantou formation in the Songliao Basin[J].SedimentaryFacies and Palaeogeography,1991,11(3):15-21.
[17]柳成志,辛仁臣,郝景波,等.松辽盆地北部齐北地区杨大城子油层河流相沉积特征[J].大庆石油学院学报,1998,22(1):68-71.Liu Chengzhi,Xin Renchen,Hao Jingbo,et al.Sedimentary fea-tures of the stream facies of Yangdachengzi formation in Qibeiarea,north Songliao Basin[J].Journal of Daqing PetroleumInstitute,1998,22(1):68-71.
[18]胡学智,鲍志东,那未红,等.松辽盆地南部扶余油田泉头组四段沉积相研究[J].石油与天然气地质,2008,29(3):334-341.Hu Xuezhi,Bao Zhidong,Na Weihong,et al.Sedimentary faciesof the fourth member of the Quantou formation in Fuyu oilfield,the south Songliao Basin[J].Oil&Gas Geology,2008,29(3):334-341.
[19]李军,宋新民,薛培华,等.扶余油田杨大城子组曲流河相油藏单砂体层次细分及成因[J].石油与天然气地质,2010,31(1):119-125.Li Jun,Song Xinmin,Xue Peihua,et al.Hierarchical subdivisionand origin of single sandbody in the reservoirs of meandering riv-er facies in the Yangdachengzi formation of Fuyu oilfield[J].Oil&Gas Geology,2010,31(1):119-125.
[20]侯贵廷,冯大晨,王文明,等.松辽盆地的反转构造作用及其对油气成藏的影响[J].石油与天然气地质,2004,25(1):49-47.Hou Guiting,Feng Dachen,Wang Wenming,et al.Reverse struc-tures and their impacts on hydrocarbon accumulation in SongliaoBasin[J].Oil&Gas Geology,2004,25(1):49-47.
[21]邹才能,陶士振,古志东.陆相坳陷盆地层序地层格架下岩性地层圈闭/油藏类型与分布规律——以松辽盆地白垩系泉头组—嫩江组为例[J].地质科学,2006,41(4):711-719.Zou Caineng,Tao Shizhen,Gu Zhidong.Types and distributionsof litho-stratigraphic traps/reservoirs in sequence stratigraphicframework in continental depressional basin:an example fromthe Cretaceous in the Songliao Basin[J].Chinese Journal ofGeology,2006,41(4):711-719.
[22]华保钦.构造应力场、地震泵和油气运移[J].沉积学报,1995,13(2):77-85.Hua Baoqin.Stress field,seismic pumping and oil-gas migra-tion[J].Acta Sedimentologica Sinica,1995,13(2):77-85.
[2]袁选俊,薛良清,池英柳,等.坳陷型湖盆层序地层特征与隐蔽油气藏勘探——以松辽盆地为例[J].石油学报,2003,24(3):11-15.Yuan Xuanjun,Xue Liangqing,Chi Yingliu,et al.Sequence stra-tigraphic and subtle-trap characteristics of lacustrine depressionbasin[J].Acta Petrolei Sinica,2003,24(3):11-15.
[3]牟雪梅,赵卫卫,查明.东营凹陷胜坨地区岩性油气藏物理模拟[J].石油与天然气地质,2010,31(2):219-224,231.Mu Xuemei,Zhao Weiwei,Zha Ming.Physical simulation of li-thologic reservirs in the Shengtuo area of the Dongying Depres-sion[J],Oil&Gas Geology,2010,31(2):219-224,231.
[4]Li Desheng.Basic characteristics of oil and gas basins in China[J].Journal of Southeast Asian Earth Sciences,1996,13(3-5):299-304.
[5]王竣,王东坡.东北亚沉积盆地的形成演化及其含油气远景[M].北京:地质出版社,1997:4-66.Wang Jun,Wang Dongpo.The formation and evolution of sedi-mentary basin and its oil and gas perspective on northeast Asia[M].Beijing:Geological Publishing House,1997:4-66.
[6]迟元林,云金表,蒙启安.松辽盆地深部结构及成盆动力学与油气运聚[M].北京:石油工业出版社,2002:52-126.Chi Yuanlin,Yun Jinbiao,Meng Qian.The deep formation andbasin-forming dynamics and hydrocarbon migration in Songli-ao Basin[M].Beijing:Petroleum Industry Press,2002:52-126.
[7]赵健.松辽盆地西斜坡泥岩地层压实规律[J].石油与天然气地质,2010,31(4):486-492.Zhao Jian.Laws of mudstone compactin on the west slop of theSongliao Basin[J].Oil&Gas Geology,2010,31(4):486-492.
[8]高瑞祺.松辽盆地白垩纪陆相沉积特征[J].地质学报,1980,54(1):9-26.Gao Ruiqi.The characteristics of continental sedimentation ofCretaceous of Songliao Basin[J].Acta Geologica Sinica,1980,54(1):9-26.
[9]王璞君,杜小弟,王竣,等.松辽盆地白垩纪年代地层研究及地层时代[J].地质学报,1995,69(4):25-29.Wang Pujun,Du Xiaodi,Wang Jun,et al.The chronostratigraphyand stratigraphic classification of the Cretaceous of the SongliaoBasin[J].Acta Geologica Sinica,1995,69(4):25-29.
[10]林春明,冯志强,张顺,等.松辽盆地北部白垩纪超层序特征[J].古地理学报,2007,9(6):619-134.Lin Chunming,Feng Zhiqiang,Zhang Shun,et al.Characteris-tics of the Cretaceous supersequences in northern Songliao Ba-sin[J].Journal of Palaeogeography,2007,9(6):619-134.
[11]黄薇,张顺,梁江平,等.松辽盆地沉积地层与成藏响应[J].大庆石油地质与开发,2009,28(5):18-22.Huang Wei,Zhang Shun,Liang Jiangping,et al.Sedimentarystrata and hydrocarbon accumulation response of Songliao Basin[J].Petroleum Geology and Oilfield Development in Daqing,2009,28(5):18-22.
[12]Feng Z Q,Jia C Z,Xie X N,et al,Tectonostratigraphic unitsand stratigraphic sequences of the nonmarine Songliao basin,northeast China[J].Basin Research,2010:22,79-95.
[13]Feng Z Q,Zhang S,Crossw T A,et al.Lacustrine turbiditechannels and fans in the Mesozoic Songliao Basin,China[J].Basin Research,2010,22:96-107.
[14]梁江平,辛仁臣,王树恒,等.松辽盆地中部含油组层序地层格架及介形类特征的响应[J].地层学杂志,2005,29(4):405-410.Liang Jiangping,Xin Renchen,Wang Shuheng,et al.Sequence-stratigraphic framework and its response to cypridea of the mid-dle oil-bearing beds of the Songliao Basin[J].Journal of Stra-tigraphy,2005,29(4):405-410.
[15]楼章华,谢鸿森,蔡希源,等.松辽盆地扶杨油层(K1q3+4)沉积环境[J].石油实验地质,1997,19(1):71-75.Lou Zhanghua,Xie Hongsen,Cai Xiyuan,et al.Sedimentary en-vironments of Fuyang oil reservoir(K1q3+4)in Songliao Basin[J].Experimental Petroleum Geology,1997,19(1):71-75.
[16]杜小弟,王璞君,王东坡.松辽盆地泉头组河流相沉积特征及古河流再造[J].岩相古地理,1991,11(3):15-21.Du Xiaodi,Wang Pujun,Wang Dongpo.Sedimentary character-istics of the fluvial facies and palaeochannel reconstruction ofthe Quantou formation in the Songliao Basin[J].SedimentaryFacies and Palaeogeography,1991,11(3):15-21.
[17]柳成志,辛仁臣,郝景波,等.松辽盆地北部齐北地区杨大城子油层河流相沉积特征[J].大庆石油学院学报,1998,22(1):68-71.Liu Chengzhi,Xin Renchen,Hao Jingbo,et al.Sedimentary fea-tures of the stream facies of Yangdachengzi formation in Qibeiarea,north Songliao Basin[J].Journal of Daqing PetroleumInstitute,1998,22(1):68-71.
[18]胡学智,鲍志东,那未红,等.松辽盆地南部扶余油田泉头组四段沉积相研究[J].石油与天然气地质,2008,29(3):334-341.Hu Xuezhi,Bao Zhidong,Na Weihong,et al.Sedimentary faciesof the fourth member of the Quantou formation in Fuyu oilfield,the south Songliao Basin[J].Oil&Gas Geology,2008,29(3):334-341.
[19]李军,宋新民,薛培华,等.扶余油田杨大城子组曲流河相油藏单砂体层次细分及成因[J].石油与天然气地质,2010,31(1):119-125.Li Jun,Song Xinmin,Xue Peihua,et al.Hierarchical subdivisionand origin of single sandbody in the reservoirs of meandering riv-er facies in the Yangdachengzi formation of Fuyu oilfield[J].Oil&Gas Geology,2010,31(1):119-125.
[20]侯贵廷,冯大晨,王文明,等.松辽盆地的反转构造作用及其对油气成藏的影响[J].石油与天然气地质,2004,25(1):49-47.Hou Guiting,Feng Dachen,Wang Wenming,et al.Reverse struc-tures and their impacts on hydrocarbon accumulation in SongliaoBasin[J].Oil&Gas Geology,2004,25(1):49-47.
[21]邹才能,陶士振,古志东.陆相坳陷盆地层序地层格架下岩性地层圈闭/油藏类型与分布规律——以松辽盆地白垩系泉头组—嫩江组为例[J].地质科学,2006,41(4):711-719.Zou Caineng,Tao Shizhen,Gu Zhidong.Types and distributionsof litho-stratigraphic traps/reservoirs in sequence stratigraphicframework in continental depressional basin:an example fromthe Cretaceous in the Songliao Basin[J].Chinese Journal ofGeology,2006,41(4):711-719.
[22]华保钦.构造应力场、地震泵和油气运移[J].沉积学报,1995,13(2):77-85.Hua Baoqin.Stress field,seismic pumping and oil-gas migra-tion[J].Acta Sedimentologica Sinica,1995,13(2):77-85.
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