南堡凹陷高北斜坡带沙三2+3亚段断裂构造特征及其油气地质意义
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摘要
高北斜坡带位于南堡凹陷拾场次凹北部,构造特征复杂,断层样式和组合受边界断层控制,多发育北东向和近东西向的高角度正断层,属于由多级别断层控制的岩性构造油藏。利用三维地震精细解释和平衡剖面恢复法对研究区沙三2+3亚段进行构造特征和构造演化研究,总结出沙三段二、三亚段地层均发育断裂构造,与控盆的边界断层距离不同而发育样式不同;断层规模西大东小,且多为高角度正断层,分布上西南多而东北地势凹陷区域较少,构成了铲式正断层控制的半地堑系统。除边界断层外,地层内部发育的断层多形成于东营组后期,连通了沙三2+3亚段之下的烃源岩和目的层位的储集砂岩,其强活动期与沙三段排烃期一致,对油气起到了运移作用;并且由于断层形成的不同岩性层位的对接形成了油藏的侧向圈闭,对该区域的油藏分布具有重要的地质意义。
Gaobei slope is considered to be a structural lithologic reservoir controlled by multigrade detachment fault in the north of Shichang sub-depression.Research proves that the faults in target strata,Es_3~(2+3) in Gaobei slope,were controlled by border faults systems and the faults showed various fracture feature because of the different distance from the border faults.Applying 3 Dseismic explanation and on the basis of drilling data,the structural feature and fracture feature at the different locations are be analyzed.There are numerous NEE and EW trending high-angled normal faults in the research area,which have underwent four fault subsidence stages,forming half-graben structure.The sediment of the sand body was mainly controlled by the tectonics.The migration and the trap of the reservoir are influenced by faults.Therefore the fault structures is meaningful in the research of reservoir distribution.The favorable exploration areas are structural lithological trap in the central and south part of Gaobei slope which means a correlation between the distribution of faults and reservoir as well.
Gaobei slope is considered to be a structural lithologic reservoir controlled by multigrade detachment fault in the north of Shichang sub-depression.Research proves that the faults in target strata,Es_3~(2+3) in Gaobei slope,were controlled by border faults systems and the faults showed various fracture feature because of the different distance from the border faults.Applying 3 Dseismic explanation and on the basis of drilling data,the structural feature and fracture feature at the different locations are be analyzed.There are numerous NEE and EW trending high-angled normal faults in the research area,which have underwent four fault subsidence stages,forming half-graben structure.The sediment of the sand body was mainly controlled by the tectonics.The migration and the trap of the reservoir are influenced by faults.Therefore the fault structures is meaningful in the research of reservoir distribution.The favorable exploration areas are structural lithological trap in the central and south part of Gaobei slope which means a correlation between the distribution of faults and reservoir as well.
引文
[1]姜华,王华,林正良,等.南堡凹陷古近纪幕式裂陷作用及其对沉积充填的控制[J].沉积学报,2009,27(5):976-982.Jiang H,Wang H,Lin Z,et al.Periodic rifting activity and its controlling on sedimentary filling of paleogene period in Nanpu Sag[J].Acta Sedmentologica Sinica,2009,27(5):976-982.
[2]孙风涛,郭铁恩,田晓平.南堡凹陷沉积史分析[J].海洋石油,2012(3):29-32.Sun F,Guo T,Tian X.Analysis of the subsidence history in Nanpu Sag[J].Offshore Oil,2012,32(3):29-32.
[3]董英洁,付广,胡明,等.南堡凹陷油气运聚过程及其主控因素[J].大庆石油地质与开发,2013,32(1):27-32.Dong Y,Fu G,Hu M,et al.Petroleum migration-accumulation processes and their main controlling factors in Nanpu Sag[J].Petroleum Geology and Oilfield Development in Daqing,2013,32(1):27-32.
[4]康海涛,王宏语,樊太亮,等.南堡凹陷高柳地区沙三段构造-层序地层特征[J].岩性油气藏,2015,27(6):30-37,47.Kang H,Wang H,Fan T,et al.Structure-sequence stratigraphic Characteristics of the third Member of Shahejie Formation in Gaoliu area,Nanpu Sag[J].Lithologic Reservoirs,2015,27(6):30-37,47.
[5]郑红菊,董月霞,王旭东,等.渤海湾盆地南堡富油气凹陷烃源岩的形成及其特征[J].天然气地球科学,2007,18(1):78-83.Zheng H,Dong Y,Wang X,et al.The generation and characteristics of source rocks in Nanpu oil-rich depression,Bohai Bay Basin[J].Natural Gas Geoscience,2007,18(1):78-83.
[6]童亨茂,赵宝银,曹哲,等.渤海湾盆地南堡凹陷断裂系统成因的构造解析[J].地质学报,2013,87(11):1647-1661.Tong H,Zhao B,Cao Z,et al.Structural analysis of faulting system origin in the Nanpu Sag,Bohai Bay Basin[J].Acta Geologica Sinica,2013,87(11):1647-1661.
[7]周海民,魏忠文,曹中宏,等.南堡凹陷的形成演化与油气的关系[J].石油与天然气地质,2000,21(4):345-349.Zhou H,Wei Z,Cao Z,et al.Relationship between formation,evolution and hydrocarbon in Nanpu Sag[J].Oil&Gas Geilogy,2000,21(4):345-349.
[8]王华,姜华,林正良,等.南堡凹陷东营组同沉积构造活动性与沉积格局的配置关系研究[J].地球科学与环境学报,2011,33(1):70-77.Wang H,Jiang H,Lin Z,et al.Relations between synsedimentary tectonic activity and sedimentary framework of Dongying formation in Nanpu Sag[J].Journal of Earth Sciences and Environment,2011,33(1):70-77.
[9]刘延莉,邱春光,邓宏文,等.冀东南堡凹陷古近系东营组构造对扇三角洲的控制作用[J].石油与天然气地质,2008,29(1):95-101.Liu Y,Qiu C,Deng H,et al.Control of the structure of the paleogene Dongying formation upon fan-delt deposition in the Nanpu Depression,Jidong Oilfield[J].Oil&Gas Geology,2008,29(1):95-101.
[10]朱光有,张水昌,王拥军,等.渤海湾盆地南堡大油田的形成条件与富集机制[J].地质学报,2011,85(1):97-113.Zhu G,Qiu C,Deng H,et al.Forming condition and enrichment mechanism of the Nanpu Oilfield in the Bohai Bay Basin,China[J].Acta Geologica Sinica,2011,85(1):97-113.
[11]刚文哲,仵岳,高岗,等.渤海湾盆地南堡凹陷烃源岩地球化学特征与地质意义[J].石油实验地质,2012,34(1):57-61,65.Gang W,Wu X,Gao G,et al.Geochemical features and Geologic significances of source rocks in Nanpu Sag,Bohai Bay Basin[J].Petroleum Geology&Experiment,2012,34(1):57-61,65.
[12]张敬艺,卿颖,程丹华,等.南堡凹陷高柳地区深层岩性油藏成藏条件研究[J].石油地质与工程,2013,27(5):5-9.Zhang J,Qing Y,Chen D,et al.Research on condition of deep lithologic reservoir accumulation in Gaoliu area of Nanpu Sag[J].Petroleum Geology and Engineering,2013,27(5):5-9.
[13]刘海青,许廷生,李艳梅,等.南堡凹陷中深层岩性油气藏形成及分布[J].特种油气藏,2014,21(5):34-36.Liu H,Xu T,Li Y,et al.Formation conditions and distribution pattern of middle-deep lithologic reservoirs in Nanpu Sag[J].Special Oil and Gas Reservoirs,2014,21(5):34-36.
[14]范柏江,刘成林,庞雄奇,等.渤海湾盆地南堡凹陷断裂系统对油气成藏的控制作用[J].石油与天然气地质,2011,32(2):192-198,206.Fan B,Liu C,Pang X,et al.Control of fault system on Hydrocarbon accumulation in Nanpu Sag,the Bohai Bay Basin[J].Oil&Gas Geology,2011,32(2):192-198,206.
[15]范柏江,刘成林,柳广弟,等.南堡凹陷断裂系统形成机制及构造演化研究[J].西安石油大学学报(自然科学版),2010,25(2):13-17,21.Fan B,Liu C,Liu G,et al.Forming mechanism of the fault system and structural evolution history of Nanpu Sag[J].Journal of Xi’an Shiyou University(Natural Science Edition),2010,25(2):13-17,21.
[16]张华文,周江羽,刘德志,等.南堡凹陷4号构造带蛤坨断层特征与油气成藏关系[J].海洋石油,2010,30(2):14-18,22.Zhang H,Zhou J,Liu D,et al.The relationship between Getuo fault and hydrocarbon accumulation in the 4th structural belt of Nanpu Depression[J].Offshore Oil,2010,30(2):14-18,22.
[2]孙风涛,郭铁恩,田晓平.南堡凹陷沉积史分析[J].海洋石油,2012(3):29-32.Sun F,Guo T,Tian X.Analysis of the subsidence history in Nanpu Sag[J].Offshore Oil,2012,32(3):29-32.
[3]董英洁,付广,胡明,等.南堡凹陷油气运聚过程及其主控因素[J].大庆石油地质与开发,2013,32(1):27-32.Dong Y,Fu G,Hu M,et al.Petroleum migration-accumulation processes and their main controlling factors in Nanpu Sag[J].Petroleum Geology and Oilfield Development in Daqing,2013,32(1):27-32.
[4]康海涛,王宏语,樊太亮,等.南堡凹陷高柳地区沙三段构造-层序地层特征[J].岩性油气藏,2015,27(6):30-37,47.Kang H,Wang H,Fan T,et al.Structure-sequence stratigraphic Characteristics of the third Member of Shahejie Formation in Gaoliu area,Nanpu Sag[J].Lithologic Reservoirs,2015,27(6):30-37,47.
[5]郑红菊,董月霞,王旭东,等.渤海湾盆地南堡富油气凹陷烃源岩的形成及其特征[J].天然气地球科学,2007,18(1):78-83.Zheng H,Dong Y,Wang X,et al.The generation and characteristics of source rocks in Nanpu oil-rich depression,Bohai Bay Basin[J].Natural Gas Geoscience,2007,18(1):78-83.
[6]童亨茂,赵宝银,曹哲,等.渤海湾盆地南堡凹陷断裂系统成因的构造解析[J].地质学报,2013,87(11):1647-1661.Tong H,Zhao B,Cao Z,et al.Structural analysis of faulting system origin in the Nanpu Sag,Bohai Bay Basin[J].Acta Geologica Sinica,2013,87(11):1647-1661.
[7]周海民,魏忠文,曹中宏,等.南堡凹陷的形成演化与油气的关系[J].石油与天然气地质,2000,21(4):345-349.Zhou H,Wei Z,Cao Z,et al.Relationship between formation,evolution and hydrocarbon in Nanpu Sag[J].Oil&Gas Geilogy,2000,21(4):345-349.
[8]王华,姜华,林正良,等.南堡凹陷东营组同沉积构造活动性与沉积格局的配置关系研究[J].地球科学与环境学报,2011,33(1):70-77.Wang H,Jiang H,Lin Z,et al.Relations between synsedimentary tectonic activity and sedimentary framework of Dongying formation in Nanpu Sag[J].Journal of Earth Sciences and Environment,2011,33(1):70-77.
[9]刘延莉,邱春光,邓宏文,等.冀东南堡凹陷古近系东营组构造对扇三角洲的控制作用[J].石油与天然气地质,2008,29(1):95-101.Liu Y,Qiu C,Deng H,et al.Control of the structure of the paleogene Dongying formation upon fan-delt deposition in the Nanpu Depression,Jidong Oilfield[J].Oil&Gas Geology,2008,29(1):95-101.
[10]朱光有,张水昌,王拥军,等.渤海湾盆地南堡大油田的形成条件与富集机制[J].地质学报,2011,85(1):97-113.Zhu G,Qiu C,Deng H,et al.Forming condition and enrichment mechanism of the Nanpu Oilfield in the Bohai Bay Basin,China[J].Acta Geologica Sinica,2011,85(1):97-113.
[11]刚文哲,仵岳,高岗,等.渤海湾盆地南堡凹陷烃源岩地球化学特征与地质意义[J].石油实验地质,2012,34(1):57-61,65.Gang W,Wu X,Gao G,et al.Geochemical features and Geologic significances of source rocks in Nanpu Sag,Bohai Bay Basin[J].Petroleum Geology&Experiment,2012,34(1):57-61,65.
[12]张敬艺,卿颖,程丹华,等.南堡凹陷高柳地区深层岩性油藏成藏条件研究[J].石油地质与工程,2013,27(5):5-9.Zhang J,Qing Y,Chen D,et al.Research on condition of deep lithologic reservoir accumulation in Gaoliu area of Nanpu Sag[J].Petroleum Geology and Engineering,2013,27(5):5-9.
[13]刘海青,许廷生,李艳梅,等.南堡凹陷中深层岩性油气藏形成及分布[J].特种油气藏,2014,21(5):34-36.Liu H,Xu T,Li Y,et al.Formation conditions and distribution pattern of middle-deep lithologic reservoirs in Nanpu Sag[J].Special Oil and Gas Reservoirs,2014,21(5):34-36.
[14]范柏江,刘成林,庞雄奇,等.渤海湾盆地南堡凹陷断裂系统对油气成藏的控制作用[J].石油与天然气地质,2011,32(2):192-198,206.Fan B,Liu C,Pang X,et al.Control of fault system on Hydrocarbon accumulation in Nanpu Sag,the Bohai Bay Basin[J].Oil&Gas Geology,2011,32(2):192-198,206.
[15]范柏江,刘成林,柳广弟,等.南堡凹陷断裂系统形成机制及构造演化研究[J].西安石油大学学报(自然科学版),2010,25(2):13-17,21.Fan B,Liu C,Liu G,et al.Forming mechanism of the fault system and structural evolution history of Nanpu Sag[J].Journal of Xi’an Shiyou University(Natural Science Edition),2010,25(2):13-17,21.
[16]张华文,周江羽,刘德志,等.南堡凹陷4号构造带蛤坨断层特征与油气成藏关系[J].海洋石油,2010,30(2):14-18,22.Zhang H,Zhou J,Liu D,et al.The relationship between Getuo fault and hydrocarbon accumulation in the 4th structural belt of Nanpu Depression[J].Offshore Oil,2010,30(2):14-18,22.