珠江口盆地白云凹陷北坡新近系层序构型及油气有利区
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摘要
珠江口盆地白云凹陷北坡是南海油气勘探的重要区域之一。前人借助岩心、地震、测井曲线以及古生物资料,将全盆地新近系划分出14个三级层序。在等时地层层序格架下,对白云凹陷北坡重点层序进行了层序构型分析,进而指导了油气勘探有利区域的预测。从北向南,研究区依次发育H型、TH型、T型以及L型层序。其中,L型和H型层序有利于储层发育,而T型有利于烃源岩发育。另外,内、外多种地质条件的共同控制使得白云凹陷北坡新近系发育着不同类型的三角洲,单个层序内可依次出现陆架边缘三角洲—内陆架三角洲—中陆架三角洲的交替。L型层序主要由陆架边缘三角洲-峡谷水道-浊积扇体等沉积体系组成;TH型、T型层序以内-中陆架三角洲及陆棚体系为主;H型主要包括了中陆架三角洲-陆棚沉积体系。白云凹陷北部的内-中陆架三角洲中的分流水道,以及白云凹陷中部的陆架边缘三角洲中的水下分流河道、河口坝及远砂坝、峡谷水道、浊积扇体均为油气富集的有利砂体。
The north slope of Baiyun Sag is one of the important areas for the oil-gas exploration in Pearl River Mouth Basin.Based on cores,seismic,log and paleontological data,14 third-order sequences were identified in the Neogene of the study area by the former researcher.Under an isochronous stratigraphic framework,this paper analyzed the sequence architecture of key sequences on the north slope of Baiyun sag,and predicted the play fairways.From north to south,4 types of sequences,including H type,TH type,T type and L type,were developed successively.Among them,the H type and L type were favorable for reservoir development,while T type was favorable for development of source rocks.Moreover,the joint control of multiple geologic conditions led to the development of various types of delta in the Neogene on the north slope of Baiyun sag.Alternating shelf-margin delta,inner-shelf delta and mid-shelf delta may occur successively in a single sequence.The L type sequence is mainly composed of shelf-margin delta,canyon channel and turbidite fans;the T and TH type sequences are dominated by inner-mid shelf delta and shelf system;and the H type sequence consists minaly of mid-shelf delta and shelf system.As a result,distributary channel sandbodies in the inner-or mid-shelf delta in the northern part of Baiyun sag,as well as the underwater distributary channel,river mouth bars,distal bars,canyon channel and turbidite fans were all favorable for oil & gas accumulation in the study area.
The north slope of Baiyun Sag is one of the important areas for the oil-gas exploration in Pearl River Mouth Basin.Based on cores,seismic,log and paleontological data,14 third-order sequences were identified in the Neogene of the study area by the former researcher.Under an isochronous stratigraphic framework,this paper analyzed the sequence architecture of key sequences on the north slope of Baiyun sag,and predicted the play fairways.From north to south,4 types of sequences,including H type,TH type,T type and L type,were developed successively.Among them,the H type and L type were favorable for reservoir development,while T type was favorable for development of source rocks.Moreover,the joint control of multiple geologic conditions led to the development of various types of delta in the Neogene on the north slope of Baiyun sag.Alternating shelf-margin delta,inner-shelf delta and mid-shelf delta may occur successively in a single sequence.The L type sequence is mainly composed of shelf-margin delta,canyon channel and turbidite fans;the T and TH type sequences are dominated by inner-mid shelf delta and shelf system;and the H type sequence consists minaly of mid-shelf delta and shelf system.As a result,distributary channel sandbodies in the inner-or mid-shelf delta in the northern part of Baiyun sag,as well as the underwater distributary channel,river mouth bars,distal bars,canyon channel and turbidite fans were all favorable for oil & gas accumulation in the study area.
引文
[1]曾麟,张振英.珠江口盆地第三系[J].石油学报,1992,13(2):178-183.Zeng Lin,Zhang Zhenying.Tertiary in Pearl River Mouth Basin[J].Acta Petrolei Sinica,1992,13(2):178-183.
[2]周祖翼.珠江口盆地的形成与南海的构造演化[J].海洋科学,1993,5:62-66.Zhou Zuyi.Basement structure and tectonic evolution of the Pearl River Mouth Basin[J].Marine Science,1993,5:62-66.
[3]陈长民,施和生,许仕策,等.珠江口盆地(东部)第三系油气藏形成条件[M].北京:科学出版社,2003.Chen Changmin,Shi Hesheng,Xu Shice,et al.Tertiary reservoir forming conditions in Pearl River Mouth Basin(eastern)[M].Bei-jing:Petroleum Industry Press,2003.
[4]张忠涛,秦成岗,高鹏,等.珠江口盆地番禺—流花地区天然气成藏特征及主控因素分析[J].天然气地球科学,2011,22(5):778-783.Zhang Zhongtao,Qin Chenggang,Gao Peng,et al.Accumulation of natu-ral gas and main controlling factorsin PY-LH Zone in Zhujiang River Mouth Basin[J].Natural Gas Geoscience,2011,22(5):778-783.
[5]许仕策,杨少坤,黄丽芬.层序地层学在地层对比中的应用[J].地学前缘,1995,2(3-4):115-123.Xu Shice,Yang Shaokun,Huang Lifen.The application of stratigra-phy to stratigraphic correlation[J].Earth Science Frontiers,1995,2(3-4):115-123.
[6]秦国权.珠江口盆地新生代晚期层序地层划分和海平面变化[J].中国海上油气:地质,2002,16(1):1-18.Qin Guoquan.Late Cenozoic sequence stratigraphy and sea-level changes in Pearl River Mouth Basin[J].China Offshore Oil and Gas(Geology),2002,16(1):1-18.
[7]董伟,林畅松,秦成岗,等.珠江口盆地番禺低隆起韩江组高精度层序格架和沉积样式与岩性地层圈闭的发育分布[J].现代地质,2008,22(5):794-802.Dong Wei,Lin Changsong,Qin Chenggang,et al.High resolution se-quence framework,depositional pattern and litho-stratigraphic traps of Hanjiang formation in Panyu Uplift,Pearl River Mouth Basin[J].Geoscience,2008,22(5):794-802.
[8]崔莎莎,何家雄,陈胜红,等.珠江口盆地发育演化特征及其油气成藏地质条件[J].天然气地球科学,2009,20(3):384-391.Cui Shasha,He Jiaxiong,Chen Shenghong,et al.Development charac-teristics of Pearl River Mouth basin and its geological conditions for oil and gas accumulation[J].Natural Gas Geoscience,2009,20(3):384-391.
[9]康永晓,张国军,冯于恬,等.珠江口盆地白云凹陷沉积充填演化研究[J].化学工程与装备,2011,9:48-50.Kang Yongxiao,Zhang Guojun,Feng Yutian,et al.Study on sedimen-tary filling evolution Baiyun sag of Pearl River Mouth basin[J].Chemical Engineering&Equipment,2011,9:48-50.
[10]付淑清,朱照宇,欧阳婷萍,等.南部陆坡晚第四纪沉积物稀土元素及环境意义[J].热带地理,2010,30(1):25-29.Fu Shuqing,Zhu Zhaoyu,Ouyang Tingping,et al.Sedimentary records of rare earth elements from southern south China Sea continental slope and its paleoclimaticimplications during late Quaternary[J].Tropical Geography,2010,30(1):25-29.
[11]邢文礼,张尚锋,杜家元,等.稀疏井网条件下利用测井曲线识别层序界面方法探讨——以珠江口盆地珠江组为例[J].岩性油气藏,2010,22(2):111-115.Xing Wenli,Zhang Shangfeng,Du Jiayuan,et al.Methods for recog-nizing sequence boundaries by using logging curves in sparse well pattern:a case study from Zhujiang formation in Pearl River Mouth basin[J].Lithologic Reservoirs,2010,22(2):111-115.
[12]李向阳,张昌民,张尚锋,等.珠江口盆地新近系层序划分与发育模式[J].石油天然气学报,2012,34(4):47-51.Li Xiangyang,Zhang Changmin,Zhang Shangfeng,et al.Neogene sequence subdivision and its development pattern in Pearl River Mouth basin[J].Journal of Oil and Gas Technology,2012,34(4):47-51.
[13]谢锐杰,张昌民,张尚锋,等.珠江口盆地东部T23层序界面的特征及生物定年[J].石油天然气学报,2011,33(5):55-58.Xie Ruijie,Zhang Changmin,Zhang Shangfeng,et al.The biochron and characteristics of T 2 3 sequence boundary in the eastern Pearl River Mouth Basin[J].Journal of Oil and Gas Technology,2011,33(5):55-58.
[14]李向阳,张昌民,张尚锋,等.珠江口盆地新近系层序发育影响因素分析[J].成都理工大学学报(自然科学版),2012,39(3):262268.Li Xiangyang,Zhang Changmin,Zhang Shangfeng,et al.Analysis of influencing factors on sequence development of Neogene strata in the Pearl River Mouth basin,China[J].Journal of Chengdu University of Technology(Science&Technology Edition),2012,39(3):262-268.
[15]陈维涛,杜家元,龙更生,等.珠江口盆地海相层序地层发育的控制因素分析[J].沉积学报,2012,30(1):73-83.Chen Weitao,Du Jiayuan,Long Gengsheng,et al.Analysis on controlling factors of marine sequence stratigraphy evolution in Pearl River Mouth basin[J].Acta Sedimentologica Sinica,2012,30(1):73-83.
[16]朱红涛,Liu Keyu,杨香华,等.陆相湖盆层序构型及其岩性预测意义:以珠江口盆地惠州凹陷为例[J].地学前缘,2012,19(1):32-39.Zhu Hongtao,Liu Keyu,Yang Xianghua,et al.The sequence stratigraphic architecture of continental lake basin and its significance on lithofacies prediction:taking Huizhou sag in Zhujiangkou basin as an example[J].Earth Science Frontiers,2012,19(1):32-39.
[17]祝彦贺,朱伟林,徐强,等.珠江口盆地13.8 Ma陆架边缘三角洲与陆坡深水扇的“源-汇”关系[J].中南大学学报(自然科学版),2011,42(12):3827-3834.Zhu Yanhe,Zhu Weilin,Xu Qiang,et al.Sedimentary response to shelf-edge delta and slope deep-water fanin 13.8 Ma of Miocene epoch in Pearl River Mouth Basin[J].Journal of Central South University(Science&Technology Edition),2011,42(12):38273834.
[18]易雪斐,张昌民,李少华,等.珠江口盆地NSQ2陆架边缘三角洲的识别标志及沉积模式[J].成都理工大学学报(自然科学版),2012,39(3):257-261.Yi Xuefei,Zhang Changmin,Li Shaohua,et al.Identification marks and depositional model of the shelf-margin delta from NSQ2 of the Pearl River Mouth Basin,China[J].Journal of Chengdu University of Technology(Science&Technology Edition),2012,39(3):257-261.
[19]祝彦贺.珠江口盆地早中新世陆架-陆坡沉积系统构成及储集体分布[J].西安石油大学学报(自然科学版),2011,26(6):1-9.Zhu Yanhe.Composition and reservoir body distribution of continental shelf-continental slope sedimentary system in early Eocene in Pearl River Mouth Basin[J].Journal of Xi’an Shiyou University Natural Science Edition),2011,26(6):1-9.
[2]周祖翼.珠江口盆地的形成与南海的构造演化[J].海洋科学,1993,5:62-66.Zhou Zuyi.Basement structure and tectonic evolution of the Pearl River Mouth Basin[J].Marine Science,1993,5:62-66.
[3]陈长民,施和生,许仕策,等.珠江口盆地(东部)第三系油气藏形成条件[M].北京:科学出版社,2003.Chen Changmin,Shi Hesheng,Xu Shice,et al.Tertiary reservoir forming conditions in Pearl River Mouth Basin(eastern)[M].Bei-jing:Petroleum Industry Press,2003.
[4]张忠涛,秦成岗,高鹏,等.珠江口盆地番禺—流花地区天然气成藏特征及主控因素分析[J].天然气地球科学,2011,22(5):778-783.Zhang Zhongtao,Qin Chenggang,Gao Peng,et al.Accumulation of natu-ral gas and main controlling factorsin PY-LH Zone in Zhujiang River Mouth Basin[J].Natural Gas Geoscience,2011,22(5):778-783.
[5]许仕策,杨少坤,黄丽芬.层序地层学在地层对比中的应用[J].地学前缘,1995,2(3-4):115-123.Xu Shice,Yang Shaokun,Huang Lifen.The application of stratigra-phy to stratigraphic correlation[J].Earth Science Frontiers,1995,2(3-4):115-123.
[6]秦国权.珠江口盆地新生代晚期层序地层划分和海平面变化[J].中国海上油气:地质,2002,16(1):1-18.Qin Guoquan.Late Cenozoic sequence stratigraphy and sea-level changes in Pearl River Mouth Basin[J].China Offshore Oil and Gas(Geology),2002,16(1):1-18.
[7]董伟,林畅松,秦成岗,等.珠江口盆地番禺低隆起韩江组高精度层序格架和沉积样式与岩性地层圈闭的发育分布[J].现代地质,2008,22(5):794-802.Dong Wei,Lin Changsong,Qin Chenggang,et al.High resolution se-quence framework,depositional pattern and litho-stratigraphic traps of Hanjiang formation in Panyu Uplift,Pearl River Mouth Basin[J].Geoscience,2008,22(5):794-802.
[8]崔莎莎,何家雄,陈胜红,等.珠江口盆地发育演化特征及其油气成藏地质条件[J].天然气地球科学,2009,20(3):384-391.Cui Shasha,He Jiaxiong,Chen Shenghong,et al.Development charac-teristics of Pearl River Mouth basin and its geological conditions for oil and gas accumulation[J].Natural Gas Geoscience,2009,20(3):384-391.
[9]康永晓,张国军,冯于恬,等.珠江口盆地白云凹陷沉积充填演化研究[J].化学工程与装备,2011,9:48-50.Kang Yongxiao,Zhang Guojun,Feng Yutian,et al.Study on sedimen-tary filling evolution Baiyun sag of Pearl River Mouth basin[J].Chemical Engineering&Equipment,2011,9:48-50.
[10]付淑清,朱照宇,欧阳婷萍,等.南部陆坡晚第四纪沉积物稀土元素及环境意义[J].热带地理,2010,30(1):25-29.Fu Shuqing,Zhu Zhaoyu,Ouyang Tingping,et al.Sedimentary records of rare earth elements from southern south China Sea continental slope and its paleoclimaticimplications during late Quaternary[J].Tropical Geography,2010,30(1):25-29.
[11]邢文礼,张尚锋,杜家元,等.稀疏井网条件下利用测井曲线识别层序界面方法探讨——以珠江口盆地珠江组为例[J].岩性油气藏,2010,22(2):111-115.Xing Wenli,Zhang Shangfeng,Du Jiayuan,et al.Methods for recog-nizing sequence boundaries by using logging curves in sparse well pattern:a case study from Zhujiang formation in Pearl River Mouth basin[J].Lithologic Reservoirs,2010,22(2):111-115.
[12]李向阳,张昌民,张尚锋,等.珠江口盆地新近系层序划分与发育模式[J].石油天然气学报,2012,34(4):47-51.Li Xiangyang,Zhang Changmin,Zhang Shangfeng,et al.Neogene sequence subdivision and its development pattern in Pearl River Mouth basin[J].Journal of Oil and Gas Technology,2012,34(4):47-51.
[13]谢锐杰,张昌民,张尚锋,等.珠江口盆地东部T23层序界面的特征及生物定年[J].石油天然气学报,2011,33(5):55-58.Xie Ruijie,Zhang Changmin,Zhang Shangfeng,et al.The biochron and characteristics of T 2 3 sequence boundary in the eastern Pearl River Mouth Basin[J].Journal of Oil and Gas Technology,2011,33(5):55-58.
[14]李向阳,张昌民,张尚锋,等.珠江口盆地新近系层序发育影响因素分析[J].成都理工大学学报(自然科学版),2012,39(3):262268.Li Xiangyang,Zhang Changmin,Zhang Shangfeng,et al.Analysis of influencing factors on sequence development of Neogene strata in the Pearl River Mouth basin,China[J].Journal of Chengdu University of Technology(Science&Technology Edition),2012,39(3):262-268.
[15]陈维涛,杜家元,龙更生,等.珠江口盆地海相层序地层发育的控制因素分析[J].沉积学报,2012,30(1):73-83.Chen Weitao,Du Jiayuan,Long Gengsheng,et al.Analysis on controlling factors of marine sequence stratigraphy evolution in Pearl River Mouth basin[J].Acta Sedimentologica Sinica,2012,30(1):73-83.
[16]朱红涛,Liu Keyu,杨香华,等.陆相湖盆层序构型及其岩性预测意义:以珠江口盆地惠州凹陷为例[J].地学前缘,2012,19(1):32-39.Zhu Hongtao,Liu Keyu,Yang Xianghua,et al.The sequence stratigraphic architecture of continental lake basin and its significance on lithofacies prediction:taking Huizhou sag in Zhujiangkou basin as an example[J].Earth Science Frontiers,2012,19(1):32-39.
[17]祝彦贺,朱伟林,徐强,等.珠江口盆地13.8 Ma陆架边缘三角洲与陆坡深水扇的“源-汇”关系[J].中南大学学报(自然科学版),2011,42(12):3827-3834.Zhu Yanhe,Zhu Weilin,Xu Qiang,et al.Sedimentary response to shelf-edge delta and slope deep-water fanin 13.8 Ma of Miocene epoch in Pearl River Mouth Basin[J].Journal of Central South University(Science&Technology Edition),2011,42(12):38273834.
[18]易雪斐,张昌民,李少华,等.珠江口盆地NSQ2陆架边缘三角洲的识别标志及沉积模式[J].成都理工大学学报(自然科学版),2012,39(3):257-261.Yi Xuefei,Zhang Changmin,Li Shaohua,et al.Identification marks and depositional model of the shelf-margin delta from NSQ2 of the Pearl River Mouth Basin,China[J].Journal of Chengdu University of Technology(Science&Technology Edition),2012,39(3):257-261.
[19]祝彦贺.珠江口盆地早中新世陆架-陆坡沉积系统构成及储集体分布[J].西安石油大学学报(自然科学版),2011,26(6):1-9.Zhu Yanhe.Composition and reservoir body distribution of continental shelf-continental slope sedimentary system in early Eocene in Pearl River Mouth Basin[J].Journal of Xi’an Shiyou University Natural Science Edition),2011,26(6):1-9.
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