琼东南盆地井震地层对比分析及区域地层格架的建立
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摘要
琼东南盆地历经断陷、断坳、裂后热沉降和裂后加速沉降等一系列的构造变动,沉积环境由始新世的滨海环境发展为现今的深水环境,形成了一套包括滨岸沉积、滨浅海沉积、陆架和陆坡沉积、以及半深海沉积的地层组合,具有良好的油气资源的生储盖条件,已成为当前油气资源勘探开发的重点区域。本文首先对盆地区域内钻井和地震剖面进行了主要地层界面(T20、T30、T40、T50、T60和T70)的识别和提取(点),继而结合连井地震剖面(线)和盆地区域过井地震剖面(面)对主要地层界面做了追踪对比分析,再依据古生物年代,建立了适用于琼东南盆地的区域地层年代格架。在琼东南盆地浅水区主要沉积了新近系地层(T60-T20),断裂基本不发育,地层厚度变化不大,极少有明显的上超和削截,局部地区发育有利于油气储集的三角洲沉积体系,表明琼东南盆地新近纪时期受构造作用影响较小。在深水区,新近系地层(T60-T20)和浅水区特征相似,仅反射特征有所不同;古近系地层(T100-T60)内部层序结构主要为楔状或近平行状,具有明显的上超和削截,地层厚度较大,断裂明显并导致地层错断,表明琼东南盆地深水区在古近纪时期主要受构造作用控制,并伴随着强烈的拉张和快速沉降作用,沉积环境主要为浅海。在近东西向的中央峡谷内存在有三期砂体:第一期砂体(井深3 528~3 336m,厚约192m)形成于距今11.6~5.5Ma(T40-T30),分布范围跨越中央峡谷的陵水-松南-宝岛段,沉积物构成包括浊积水道沉积、浊积席状砂、块体流沉积、深海泥质沉积、天然堤及漫溢沉积等;第二期砂体(井深4 100~3 900m,厚约200m)形成于距今5.5~4.2Ma(T30-T29),分布范围跨越中央峡谷的乐东-陵水段,以重力流沉积为主;第三期砂体(深度3 630~3 400m,厚约230m)发育于距今4.2~3.6Ma(T29-T28),分布于峡谷的乐东-莺东段,以浊积水道沉积为主。三期砂体在琼东南盆地中央坳陷带自东向西、由老到新依次展布,构成了良好的油气储层体。
The Qiongdongnan Basin experienced a series of tectonic activities from faulting,through fault-depression and post-faulting thermal subsidence to post-faulting accelerated subsidence,had a sedimentary environment from coast in Eocene to deep-sea in present,formed a set of strata combination including littoral sediments,offshore sediments,shelf-slope sediments and bathyal sediments,and possessed favorable source-reservoir-cap conditions for hydrocarbon accumulation.Thus it is considered as an important region of hydrocarbon exploration and development.In this study,the key strata interfaces(T20,T30,T40,T50,T60 and T70)in the wells-through seismic profiles were identified,then were tracked and correlated combined with the regional wells-tie seismic profiles in the basin.On this basis,the regional stratigraphic framework of the Qiongdongnan Basin was established associated with the age of fossil assemblages.The Neogene strata(T60-T20)are primary in the shallow water area,in which the faults are rarely distributed,the stratigraphic thickness has little variation,and onlaps and truncations can be rarely found.Delta sedimentary system,which is beneficial to hydrocarbon reservoir,develops highly in local area.The evidence mentioned above indicates that tectonism exerted trivial influence on the Qiongdongnan Basin during the Neogene.The characteristics of the Neogene strata(T60-T20)in the deep water area are similar to that in the shallow water except seismic reflection characteristics.The internal sequence structure of the Paleogene strata(T100-T60)is dominantly sphenoid or subparallel with obvious onlaps and truncations.The thickness of the strata is large,and obvious faults result in strata fractures.These characteristics imply that the deep water area in the Qiongdongnan Basin was controlled mainly by tectonism,accompanying with the strong extension and rapid subsidence,and being in neritic environment during the Paleogene.Three stages of sand bodies are identified in the Central Canyon from east to west:the first stage(depth of 3 528-3 336 m,thickness of about 192m)formed during 11.6-5.5Ma B.P.(T40-T30)distributes in the Lingshui-Songnan-Baodao segment of the Central Canyon,which includes turbidite channel deposit,turbidite sheet sand,mass flow deposit,deep-sea politic deposit,natural levee and overflow deposit;the second stage(depth of 4 100-3 900 m,thickness of about 200m)formed during5.5-4.2Ma B.P.(T30-T29),spans Ledong-Lingshui segment of the Central Canyon,being primarily composed of gravity flow deposits;the third stage(depth of 3 630-3 400 m,thickness of about 230m)formed during 4.2-3.6Ma B.P.(T29-T28),presents in the Ledong-Yingdong segment of the Central Canyon,consisting mainly of turbidite channel deposits.The three stages of sand bodies from oldest in the east to youngest in the west,constituted the favorable reservoirs in the Central Depression Belt of the Qiongdongnan Basin.
引文
[1]Honza E,Fujioka K.Formation of arcs and backarc basins inferred from the tectonic evolution of Southeast Asia since the Late Cretaceous[J].Tectonophysics,2004,384(1):23-53.
    [2]谢建华,夏斌,张宴华,等.南海形成演化探究[J].海洋科学进展,2005,23(2):212-218.Xie Jianhua,Xia Bin,Zhang Yanhua,et al.Study on formation and evolution of the South China Sea[J].Advances in Marine Science,2005,23(2):212-218.
    [3]李三忠,索艳慧,刘鑫,等.南海的基本构造特征与成因模型:问题与进展及论争[J].海洋地质与第四纪地质,2012,32(6):35-53.Li Sanzhong,Suo Yanhui,Liu Xin,et al.Basic structural pattern and tectonic models of the South China Sea:problems,advances and controversies[J].Marine Geology&Quaternary Geology,2012,32(6):35-53.
    [4]Wang Zhenfeng,Liu Zhen,Cao Shang,et al.Vertical migration through faults and hydrocarbon accumulation patterns in deepwater areas of the Qiongdongnan Basin[J].Acta Oceanologica Sinica,2014,33(12):96-106.
    [5]谢文彦,张一伟,孙珍,等.琼东南盆地断裂构造与成因机制[J].海洋地质与第四纪地质,2007,27(1):71-78.Xie Wenyan,Zhang Yiwei,Sun Zhen,et al.Characteristics and formation mechanism of faults in Qiongdongnan Basin[J].Marine Geology&Quaternary Geology,2007,27(1):71-78.
    [6]邵磊,李昂,吴国瑄,等.琼东南盆地沉积环境及物源演变特征[J].石油学报,2010,31(4):548-552.Shao Lei,Li Ang,Wu Guoxuan,et al.Evolution of sedimentary environment and provenance in Qiongdongnan Basin in the northern South China Sea[J].Acta Petrolei Sinica,2010,31(4):548-552.
    [7]万志峰,夏斌,何家雄,等.南海北部莺歌海盆地与琼东南盆地油气成藏条件比较研究[J].天然气地球科学,2007,18(5):648-652.Wan Zhifeng,Xia Bin,He Jiaxiong,et al.The comparative study of hydrocarbon accumulation conditions in Yinggehai and Qiongdongnan Basins,northern South China Sea[J].Natural Gas Geoscience,2007,18(5):648-652.
    [8]王振峰,甘华军,王华,等.琼东南盆地深水区古近系层序地层特征及烃源岩分布预测[J].中国海上油气,2014,26(1):9-16,29.Wang Zhenfeng,Gan Huajun,Wang Hua,et al.Paleogene sequence stratigraphy and source rock distribution in the deep water area,Qiongdongnan Basin[J].China Offshore Oil and Gas,2014,26(1):9-16,29.
    [9]Pettingill H S,Weimer P.Deepwater remains immature frontier[J].Offshore,2002,62(10):48-51.
    [10]王春修.国外深水油气勘探动态及经验[J].中国海上油气(地质),2002,16(2):141-144.Wang Chunxiu.Petroleum exploration situation and experiences in overseas deepwater[J].China Offshore Oil and Gas(Geology),2002,16(2):141-144.
    [11]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.He Jiaxiong,Xia Bin,Shi Xiaobin,et al.Prospect and progress for oil and gas in deep waters of the world,and the potential and prospect foreground for oil and gas in deep waters of the South China Sea[J].Natural Gas Geoscience,2006,17(6):747-752.
    [12]林畅松,刘景彦,张英志,等.构造活动盆地的层序地层与构造地层分析——以中国中、新生代构造活动湖盆分析为例[J].地学前缘,2005,12(4):365-374.Lin Changsong,Liu Jingyan,Zhang Yingzhi,et al.Sequence stratigraphy and tectono-stratigraphic analysis of tectonically active basins:a case study on the Cenozoic-Mesozoic lacustrine basins in China[J].Earth Science Frontiers,2005,12(4):365-374.
    [13]王东东.琼东南盆地古近系高分辨率层序地层研究[D].青岛:山东科技大学,2009.Wang Dongdong.Study of high-resolution sequence on Paleogene system in area of Qiongdongnan Basin[D].Qingdao:Shandong University of Science and Technology,2009.
    [14]唐武,王英民,黄志超,等.琼东南盆地南部深水区中新统层序地层地震相与沉积演化特征[J].海相油气地质,2012,17(2):20-25.Tang Wu,Wang Yingmin,Huang Zhichao,et al.Seismic facies and sedimentary evolution characteristics of Miocene sequence strata in the deep-water region,southern Qiongdongnan Basin[J].Marine Origin Petroleum Geology,2012,17(2):20-25.
    [15]杜同军.琼东南盆地层序地层和深水区沉积充填特征[D].青岛:中国海洋大学,2013.Du Tongjun.Sequence stratigraphic and deep water sedimentary characteristic in the Qiongdongnan Basin[D].Qingdao:Ocean University of China,2013.
    [16]李亚敏,施小斌,徐辉龙,等.琼东南盆地古近纪基底断裂的活动特征分析[J].热带海洋学报,2011,30(6):74-83.Li Yamin,Shi Xiaobin,Xu Huilong,et al.Analysis on the characteristics of Paleogene basement faultsactivity in Qiongdongnan Basin[J].Journal of Tropical Oceanography,2011,30(6):74-83.
    [17]姚伯初,曾维军,陈艺中,等.南海北部陆缘东部的地壳结构[J].地球物理学报,1994,37(1):27-35.Yao Bochu,Zeng Weijun,Chen Yizhong,et al.The crustal structure in the eastern part of the northern margin of the South China Sea[J].Acta Geophysica Sinica,1994,37(1):27-35.
    [18]蔡佳.琼东南盆地古近系古地貌恢复及其对层序样式和沉积特征的控制[D].武汉:中国地质大学(武汉),2009.Cai Jia.Paleo-morphologic restoration of Paleogene in Qiongdongnan Basin and its control on sequence architecture and sedimentary characteristics[D].Wuhan:China University of Geosciences(Wuhan),2009.
    [19]雷超,任建业,裴健翔,等.琼东南盆地深水区构造格局和幕式演化过程[J].地球科学:中国地质大学学报,2011,36(1):151-162.Lei Chao,Ren Jianye,Pei Jianxiang,et al.Tectonic framework and multiple episode tectonic evolution in deep-water area of Qiongdongnan Basin,northern continental margin of South China Sea[J].Earth Science:Journal of China University of Geosciences,2011,36(1):151-162.
    [20]Ren Jianye,Zhang Daojun,Tong Dianjun,et al.Characterising the nature,evolution and origin of detachment fault in central depression belt,Qiongdongnan Basin of South China Sea:evidence from seismic reflection data[J].Acta Oceanologica Sinica,2014,33(12):118-126.
    [21]雷超.琼东南盆地深水区盆地结构构造及其形成机制研究[D].武汉:中国地质大学(武汉),2009.Lei Chao.Basin structure and its formation mechanism in deep-water area of Qiongdongnan Basin,South China Sea[D].Wuhan:China University of Geosciences(Wuhan),2009.
    [22]陶维祥,赵志刚,何仕斌,等.南海北部深水西区石油地质特征及勘探前景[J].地球学报,2005,26(4):359-364.Tao Weixiang,Zhao Zhigang,He Shibin,et al.Petroleum geological conditions and exploration prospects in deep-water area of northwestern South China Sea[J].Acta Geoscientica Sinica,2005,26(4):359-364.
    [23]赵民,张晓宝,吉利明,等.琼东南盆地构造演化特征及其对油气藏的控制浅析[J].天然气地球科学,2010,21(3):494-502.Zhao Min,Zhang Xiaobao,Ji Liming et al.Characteristics of tectonic evolution in the Qiongdongnan Basin and brief discussion about its controlling on reservoirs[J].Natural Gas Geoscience,2010,21(3):494-502.
    [24]徐强,姜烨,董伟良,等.中国层序地层研究现状和发展方向[J].沉积学报,2003,21(1):155-167.Xu Qiang,Jiang Ye,Dong Weiliang,et al.Research status and development direction of sequence stratigraphy in China[J].Acta Sedmentologica Sinica,2003,21(1):155-167.
    [25]李祥辉.层序地层中的混合沉积作用及其控制因素[J].高校地质学报,2008,14(3):395-404.Li Xianghui.Mixing of siliciclastic-carbonate sediments within systems tracts of depositional sequences and its controlling factors[J].Geological Journal of China Universities,2008,14(3):395-404.
    [26]孔祥宇,于继崇,李树峰.复杂断块老油田精细地层对比综合方法的提出与应用[J].岩性油气藏,2009,21(1):120-124.Kong Xiangyu,Yu Jichong,Li Shufeng.Fine stratigraphic correlation method and its application in complicated fault-block oilfield[J].Lithologic Reservoirs,2009,21(1):120-124.
    [27]米立军,王东东,李增学,等.琼东南盆地崖城组高分辨率层序地层格架与煤层形成特征[J].石油学报,2010,31(4):534-541.Mi Lijun,Wang Dongdong,Li Zengxue,et al.High-resolution sequence stratigraphic framework and coal-forming features in Yacheng formation of Qiongdongnan Basin[J].Acta Petrolei Sinica,2010,31(4):534-541.
    [28]葛黄敏,李前裕,钟广法,等.南海北部第四纪高分辨率地震层序地层与古环境演化[J].海洋地质与第四纪地质,2012,32(4):49-60.Ge Huangmin,Li Qianyu,Zhong Guangfa,et al.High resolution Quaternary seismic sequence stratigraphy and paleoenvironmental evolution in the northern South China Sea[J].Marine Geology&Quaternary Geology,2012,32(4):49-60.
    [29]Blow W H.Late middle Eocene to Recent planktonic foraminiferal biostratigraphy[C]//Bronnimann P,Renz H H.Proceedings of the First International Conference on Planktonic Microfossils.Leiden:EJ Brill Leiden,1969:199-422.
    [30]Blow W H.The cainozoic globigerinida:a study of the morphology,taxonomy,evolutionary relationships and the stratigraphical distribution of some[M].Atlas:Brill Archive,1979.
    [31]Bolli H M,Saunders J B,Perch-Nielsen K.Plankton Stratigraphy:Volume 1,Planktic Foraminifera,Calcareous Nannofossils and Calpionellids[M].CUP Archive,1989.
    [32]Martini E.Standard Tertiary and Quaternary calcareous nannoplankton zonation[C]//Proceedings of the Second Planktonic Conference,Roma1970.Roma:Edizioni Tecnoscienza,1971:739-785.
    [33]Sun Zhipeng,Zhai Shikui,Xiu Chun,et al.Geochemical characteristics and their significances of rare-earth elements in deep-water well core at the Lingnan Low Uplift Area of the Qiongdongnan Basin[J].Acta Oceanologica Sinica,2014,33(12):81-95.
    [34]苏明,李俊良,姜涛,等.琼东南盆地中央峡谷的形态及成因[J].海洋地质与第四纪地质,2009,29(4):85-93.Su Ming,Li Junliang,Jiang Tao,et al.Morphological features and formation mechanism of central canyon in the Qiongdongnan Basin,northern South China Sea[J].Marine Geology&Quaternary Geology,2009,29(4):85-93.
    [35]李冬,王英民,王永凤,等.琼东南盆地中央峡谷深水天然堤——溢岸沉积[J].沉积学报,2011,29(4):689-694.Li Dong,Wang Yingmin,Wang Yongfeng,et al.The sedimentary and foreground of prospect for levee-overbank in central canyon,Qiongdongnan Basin[J].Acta Sedmentologica Sinica,2011,29(4):689-694.
    [36]许怀智,蔡东升,孙志鹏,等.琼东南盆地中央峡谷沉积充填特征及油气地质意义[J].地质学报,2012,86(4):641-650.Xu Huaizhi,Cai Dongsheng,Sun Zhipeng,et al.Filling characters of central submarine canyon of Qiongdongnan Basin and its significance of petroleum geology[J].Acta Geologica Sinica,2012,86(4):641-650.
    [37]张道军,王亚辉,赵鹏肖,等.南海北部琼东南盆地陵水段峡谷沉积建造及勘探意义[J].海洋学报,2015,37(2):25-35.Zhang Daojun,Wang Yahui,Zhao Pengxiao,et al.Sedimentary formation and exploration significance of the Lingshui Canyon system in the Qiongdongnan Basin[J].Haiyang Xuebao,2015,37(2):25-35.
    [38]龚再升,李思田.南海北部大陆边缘盆地油气成藏动力学研究[M].北京:科学出版社,2004.Gong Zaisheng,Li Sitian.Dynamical studies of hydrocarbon accumulation in deep water in northern continental margin of the South China Sea[M].Beijing:Science Press,2004.
    [39]王家豪,刘丽华,陈胜红,等.珠江口盆地恩平凹陷珠琼运动二幕的构造——沉积响应及区域构造意义[J].石油学报,2011,32(4):588-595.Wang Jiahao,Liu Lihua,Chen Shenghong,et al.Tectonic-sedimentary responses to the second episode of the Zhu-Qiong movement in the Enping Depression,Pearl River Mouth Basin and its regional tectonic significance[J].Acta Petrolei Sinica,2011,32(4):588-595.
    [40]Li Qianyu,Jian Zhimin,Su Xin.Late Oligocene rapid transformations in the South China Sea[J].Marine Micropaleontology,2005,54(1/2):5-25.
    [41]朱继田,裴健翔,孙志鹏,等.琼东南盆地新构造运动及其对晚期油气成藏的控制[J].天然气地球科学,2011,22(4):649-656.Zhu Jitian,Pei Jianxiang,Sun Zhipeng,et al.Feature of neotectonism and its control on late hydrocarbon accumulation in Qiongdongnan Basin[J].Natural Gas Geoscience,2011,22(4):649-656.
    [42]赵淑娟,吴时国,施和生,等.南海北部东沙运动的构造特征及动力学机制探讨[J].地球物理学进展,2012,27(3):1008-1019.Zhao Shujuan,Wu Shiguo,Shi Hesheng,et al.Structures and dynamic mechanism related to the Dongsha movement at the northern margin of South China Sea[J].Progress in Geophysics,2012,27(3):1008-1019.
    [43]赵天亮,蒲仁海,屈红军,等.琼东南盆地南部中新统“丘”形反射成因探讨[J].海洋学报,2013,35(4):112-120.Zhao Tianliang,Pu Renhai,Qu Hongjun,et al.An origin discussion of mound-shaped reflections in Miocene,southern Qiongdongnan Basin[J].Haiyang Xuebao,2013,35(4):112-120.
    [44]冯杨伟.琼东南盆地深水区梅山组沉积相与丘状反射体地质解释[D].西安:西北大学,2012.Feng Yangwei.Research on sedimentary facies and geologic interpretation of moundy reflectors of Meishan formation in deepwater area of Qiongdongnan Basin[D].Xian:Northwest University of China,2012.
    [45]孙珍,钟志洪,周蒂.莺歌海盆地构造演化与强烈沉降机制的分析和模拟[J].地球科学:中国地质大学学报,2007,32(3):347-356.Sun Zhen,Zhong Zhihong,Zhou Di.The analysis and analogue modeling of the tectonic evolution and strong subsidence in the Yinggehai Basin[J].Earth Science:Journal of China University of Geosciences,2007,32(3):347-356.
    [46]Wang Zhenfeng,Shi Xiaobin,Yang Jun,et al.Analyses on the tectonic thermal evolution and influence factors in the deep-water Qiongdongnan Basin[J].Acta Oceanologica Sinica,2014,33(12):107-117.

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