渤中凹陷西洼中央构造带新近系油气差异富集主控因素及成藏模式
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摘要
为了揭示渤中凹陷西洼中央构造带新近系油气差异富集规律,分析古隆起的发育特征、断层活动性、断—砂耦合接触关系及断层侧封条件,明确新近系油气差异富集的主控因素。结果表明:古隆起发育控制油气的宏观分布,其汇烃效率的强弱决定油气平面富集程度。断层活动性控制油气富集层位,主成藏期油源断层断距大于150m,断层活动速率大于10m/Ma,断层生长指数呈渐衰转盛型与直线上升型,油气主要富集于明下段;反之,油气主要富集于馆陶组,断砂耦合接触关系控制明下段油气的富集,复合型接触关系的砂体运移效率最高。馆陶组的油气富集主要受控于断层的侧封条件,当断层泥比率大于0.3时,断层侧向封堵性较好。建立的"断隆联控、差异富集"油气差异成藏模式,可有效指导渤中凹陷西洼的油气勘探部署。
In order to reveal differential enrichment of hydrocarbons in the central structural belt in the west of Bozhong sag,this paper systematically studies characteristics of paleo-uplift,fault activity,configurations of faults and sand bodies and fault lateral sealing. The main controlling factors of hydrocarbon accumulation are summarized. Results show that the paleo-uplift controls the macroscopic distribution of oil and gas,oil and gas plane accumulation degree are controlled by the hydrocarbon gathering efficiency of paleo-uplif. The oil and gas accumulation horizon are controlled by the fault activity,when the fault throw was greater than 150 m,the fault activity rate was greater than 10 m/Ma,the fault growth index shows the gradually-declined-turned acted type and linear rising type,the oil and gas were mainly concentrated in Minghuazhen formation. However,in Guantao formation,the configurations of faults and sand bodies control the oil and gas accumulation in Minghuazhen formation,and the compound type has a higher oil and gas migration efficiency. The oil and gas accumulation in Guantao formation are controlled by the lateral sealing conditions of faults. When SGR is greater then 0. 3,the fault has a better lateral sealing. Finally,the paper established an oil and gas enrichment mode of " paleo-uplift and fault jointly control reservoirs and differential accumulation" in research area,which serves as an effective guidance to the exploration deployment of oil and gas exploration in western of Bozhong sag.
In order to reveal differential enrichment of hydrocarbons in the central structural belt in the west of Bozhong sag,this paper systematically studies characteristics of paleo-uplift,fault activity,configurations of faults and sand bodies and fault lateral sealing. The main controlling factors of hydrocarbon accumulation are summarized. Results show that the paleo-uplift controls the macroscopic distribution of oil and gas,oil and gas plane accumulation degree are controlled by the hydrocarbon gathering efficiency of paleo-uplif. The oil and gas accumulation horizon are controlled by the fault activity,when the fault throw was greater than 150 m,the fault activity rate was greater than 10 m/Ma,the fault growth index shows the gradually-declined-turned acted type and linear rising type,the oil and gas were mainly concentrated in Minghuazhen formation. However,in Guantao formation,the configurations of faults and sand bodies control the oil and gas accumulation in Minghuazhen formation,and the compound type has a higher oil and gas migration efficiency. The oil and gas accumulation in Guantao formation are controlled by the lateral sealing conditions of faults. When SGR is greater then 0. 3,the fault has a better lateral sealing. Finally,the paper established an oil and gas enrichment mode of " paleo-uplift and fault jointly control reservoirs and differential accumulation" in research area,which serves as an effective guidance to the exploration deployment of oil and gas exploration in western of Bozhong sag.
引文
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[2]李慧勇,周心怀,王粤川,等.石臼坨凸起中段东斜坡明化镇组“脊、圈、砂”控藏作用[J].东北石油大学学报,2013,37(6):75-81.Li Huiyong,Zhou Xinhuai,Wang Yuechuan,et al."Ridge,trap,sandstone"control reservoir of Minghuazhen formation in east slope at middle of Shijutuo uplift[J].Journal of Northeast Petroleum University,2013,37(6):75-81.
[3]王昕,王永利,官大勇,等.环渤中凹陷斜坡区浅层油气地质特征与勘探潜力[J].中国海上油气,2012,24(3):12-16.Wang Xin,Wang Yongli,Guan Dayong,et al.Shallow petroleum geology and exploration potentialin the slope area,circum-Bozhong sag[J].China Offshore Oil and Gas,2012,24(3):12-16.
[4]王冠民,熊周海,张健,等.渤海湾盆地渤中凹陷油藏断裂特征以及成藏的控制作用[J].石油与天然气地质,2017,38(1):62-70.Wang Guanmin,Xiong Zhouhai,Zhang jian,et al.Characterization of fault and its control on reservoirs in the Bozhong sag,Bohai bay basin[J].Oil&Gas Geology,2017,38(1):62-70.
[5]邓运华.渤海湾盆地上第三系油藏类型及成藏控制因素分析[J].中国海上油气,2003,17(6):359-364.Deng Yunhua.Types and accumulation controls of Neogene oil reservoirs in Bohai bay basin[J].China Offshore Oil and Gas,2003,17(6):359-364.
[6]徐长贵,姜培海,武法东,等.渤中坳陷上第三系三角洲的发现、沉积特征及其油气勘探意义[J].沉积学报,2002,20(4):588-594.Xu Changgui,Jiang Peihai,Wu Fadong,et al.Discovery and sedimentary characteristics of the Neogene delta in Bozhong depression and its significance for oil and gas exploration[J].Acta Sedimentologica Sinica,2002,20(4):588-594.
[7]朱伟林,米立军,龚再生,等.渤海海域油气成藏与勘探[M].北京:科学出版社,2009:177-226.Zhu Weilin,Mi Lijun,Gong Zaisheng,et al.Bohai sea oil and gas exploration[M].Beijing:Science Press,2009:177-226.
[8]刘小平,周心怀,吕修祥,等.渤海海域油气分布特征及主控因素[J].石油与天然气地质,2009,30(4):497-502.Liu Xiaoping,Zhou Xinhuai,Lyu Xiuxiang,et al.Hydrocarbon distribution features and main controlling factors in the Bohai sea waters[J].Oil&Gas Geology,2009,30(4):497-502.
[9]薛永安,韦阿娟,彭靖淞,等.渤海湾盆地渤海海域大中型油田成藏模式和规律[J].中国海上油气,2016,28(3):10-19.Xue Yong'an,Wei Ajuan,Peng Jingsong,et al.Accumulation models and regularities of large-middle scale oilfields in Bohai sea,Bohai bay basin[J].China Offshore Oil and Gas,2016,28(3):10-19.
[10]姜治群,吴智平,李伟,等.断裂对黄河口凹陷新近系油气分布的控制作用[J].特种油气藏,2016,23(6):50-54.Jiang Zhiqun,Wu Zhiping,Li Wei,et al.Effect of faults on Neogene hydrocarbon distribution in the Yellow River estuary depression[J].Special Oil&Gas Reservoirs,2016,23(6):50-54.
[11]王应斌,黄雷,王强,等.渤海浅层油气富集规律——以黄河口凹陷为例[J].石油与天然气地质,2011,32(54):637-650.Wang Yingbin,Huang Lei,Wang Qiang,et al.Hydrocarbon accumulation in the shallow reservoirs of the Bohai bay basin:A case study of the Huanghekou sag[J].Oil&Gas Geology,2011,32(54):637-650.
[12]王昕,高坤顺,王玉秀,等.庙西南凸起勘探发现与油气成藏条件分析[J].特种油气藏,2013,20(2):16-20.Wang Xin,Gao Kunshun,Wang Yuxiu,et al.Exploration discoveries and hydrocarbon accumulation conditions in the Miaoxinan uplift[J].Special Oil&Gas Reservoirs,2013,20(2):16-20.
[13]邓津辉,周心怀,魏刚,等.郯庐走滑断裂带活动特征与油气成藏的关系——以金县地区为例[J].石油与天然气地质,2008,29(1):102-106.Deng Jinhui,Zhou Xinhuai,Wei Gang,et al.Strike-slip faulting activities in the Tanlu fault zone and their relationship with hydrocarbon accumulation:An example from Jinxian area[J].Oil&Gas Geology,2008,29(1):102-106.
[14]李新琦,李慧勇,于海波,等.张家口—蓬莱断裂带渤海段断裂特征及其与油气差异成藏的关系[J].油气地质与采收率,2016,23(5):16-25.Li Xinqi,Li Huiyong,Yu Haibo,et al.Fault characteristics and its relationship with differential hydrocarbon accumulation of Zhangjiakou-Penglai fault in Bohai region[J].Petroleum Geology and Recovery Efficiency,2016,23(5):16-25.
[15]姜福杰,庞雄奇,姜振学,等.渤海海域沙三段烃源岩评价及排烃特征[J].石油学报,2010,31(6):906-911.Jiang Fujie,Pang Xiongqi,Jiang Zhenxue,et al.The quality evaluation and hydrocarbon-expulsion characters of source rocks in the3rd member of Shahejie formation in the Bohai sea[J].Acta Petrolei Sinica,2010,31(6):906-911.
[16]吴小红,吕修祥,周心怀,等.渤中凹陷石南地区东营组烃源岩特征及油气勘探意义[J].石油学报,2010,31(3):394-407.Wu Xiaohong,Lyu Xiuxiang,Zhou Xinhuai,et al.Characteristics of Dongying formation source rock and its significance for hydrocarbon exploration in Shinan area of Bozhong depression[J].Acta Petrolei Sinica,2010,31(3):394-407.
[17]孙和风,周心怀,彭文绪,等.黄河口凹陷新近系浅水三角洲岩性油气藏成藏模式[J].大庆石油大学学报,2010,34(2):11-15.Sun Hefeng,Zhou Xinhuai,Peng Wenxu,et al.Lithological reservoir forming patterns of Neogene shallow water detla in Huanghekou sag[J].Journal of Daqing Petroleum Institute,2010,34(2):11-15.
[18]吴小红,吕修祥,周心怀,等.BZ34油区明下段浅水三角洲沉积特征及其油气勘探意义[J].大庆石油大学学报,2009,33(5):32-40.Wu Xiaohong,Lyu Xiuxiang,Zhou Xinhuai,et al.Discovery of the shallow delta sediment in Minghuazhen formation in BZ34oil and fields and its significance in oil and gas exploitation[J].Journal of Daqing Petroleum Institute,2009,33(5):32-40.
[19]汪泽成,赵文智.海相古隆起在油气成藏中的作用[J].中国石油勘探,2006,4(4):26-32.Wang Zecheng,Zhao Wenzhi.A role of marine paleo-uplift in reservoir-forming of oil and gas[J].China Petroleum Exploration,2006,4(4):26-32.
[20]何登发,李德生,童晓光,等.多期叠加盆地古隆起控油规律[J].石油学报,2008,29(4):475-488.He Dengfa,Li Desheng,Tong Xiaoguang,et al.Accumulation and distribution of oil and gas controlled by paleo-uplift in poly-history superimposed basin[J].Acta Petrolei Sinica,2008,29(4):475-488.
[21]王鼐,魏国齐,杨威,等.川西北剑阁古隆起形成演化过程及其控气作用[J].新疆石油地质,2016,37(2):125-130.Wang Nai,Wei Guoqi,Yang Wei,et al.Formation and evolution of Jiange paleo uplift in northwestern Sichuan basin and gas controlled effect[J].Xinjiang Petroleum Geology,2016,37(2):125-130.
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