利用地震小层对比技术分析层序及岩性圈闭
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摘要
为了精确划分柴达木盆地三湖地区七个泉组地震层序和明确层序内部结构特征,采用地震小层追踪、对比技术对该区的地震剖面进行处理和精细解释,并结合地震小层的Wheeler域转换图以及岩心、钻测井、分析化验等资料的综合分析,将七个泉组从下向上划分为5个沉积层序,明确了各层序界面和最大湖泛面的识别标志,指出缺乏明显地形坡折的七个泉组沉积层序由湖侵体系域和湖退体系域组成,其中湖侵体系域以退积型序列为主要特征,而湖退体系域以进积型序列为主要特征,建立了研究区的层序地层充填模式。综合地震小层上倾尖灭点识别、连井砂体对比以及构造等分析成果,指出研究区岩性圈闭在平面上主要分布在台东、涩东、驼西鼻隆区和驼南、涩南、盐西斜坡带。
In order to divide exactly seismic sequences of Qigequan formation and understand structural features inside these sequences in Sanhu area of Qaidam Basin,seismic sub-layer correlation is used to process and interpret seismic data.Combining with the Wheeler domain transformation map of seismic sub-layers,core data,well logging data and analysis test data,Qigequan formation is subdivided into five sequences from the bottom to the top,and the identification marks of sequence boundaries and flooding surfaces are determined.Each Qigequan formation sequence which has no obvious breaks is comprised of lacustrine transgressive system tract and lacustrine regressive system tract.And the lacustrine transgressive system tracts are mainly characterized by retroprogradation sequence while the lacustrine regressive system tracts mainly characterized by oprogradation sequence.Then the sequence mode of the research area is proposed.Combining with the updip pinchout of seismic sub-layers,sandbody correlation and structural analysis,our study points that the lithologic traps of work area mainly distribute in eastern Taijinar,eastern Seniehu,western Tuofengshan uplift area and northern Tuofengshan,southern Seniehu,western Salt Lake slope area.
In order to divide exactly seismic sequences of Qigequan formation and understand structural features inside these sequences in Sanhu area of Qaidam Basin,seismic sub-layer correlation is used to process and interpret seismic data.Combining with the Wheeler domain transformation map of seismic sub-layers,core data,well logging data and analysis test data,Qigequan formation is subdivided into five sequences from the bottom to the top,and the identification marks of sequence boundaries and flooding surfaces are determined.Each Qigequan formation sequence which has no obvious breaks is comprised of lacustrine transgressive system tract and lacustrine regressive system tract.And the lacustrine transgressive system tracts are mainly characterized by retroprogradation sequence while the lacustrine regressive system tracts mainly characterized by oprogradation sequence.Then the sequence mode of the research area is proposed.Combining with the updip pinchout of seismic sub-layers,sandbody correlation and structural analysis,our study points that the lithologic traps of work area mainly distribute in eastern Taijinar,eastern Seniehu,western Tuofengshan uplift area and northern Tuofengshan,southern Seniehu,western Salt Lake slope area.
引文
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[11]孙志华,吴奇之,张一伟等.层序界面在地球物理资料上的响应特征.石油地球物理勘探,2001,36(5):626～632Sun Zhihua,Wu Qizhi,Zhang Yiwei et al.Responsecharacteristics of sequence boundary in geophysicaldata.OGP,2001,36(5):626～632
[12]袁井菊,陈明,何晓松,马伟.辽河东部凹陷古近系层序地层格架及成因分析.石油地球物理勘探,2006,44(4):350～356Yuan Jing-ju,Chen Ming,He Xiao-song,Ma Wei.Analysis of Tertiary sequence-stratigraphic frame-work and genesis in east Liaohe sag.OGP,2006,44(4):350～356
[13]李思田,林畅松,解习农等.大型陆相盆地层序地层学研究——以鄂尔多斯中生代盆地为例.地学前缘,1995,2(3/4):133～136Li Sitian,Lin Changsong,Xie Xinong et al.Approa-ches of nonmarine sequence stratigraphy:a case studyon the Mesozoic Ordos Basin.Earth Science Fron-tiers,1995,2(3/4):133～136
[14]郭建华,孙磉墩,许杰等.塔里木盆地巴楚地区石炭系层序地层学特征.中南大学学报(自然科学版),2010,41(1):257～264Guo Jianhua,Sun Sangdun,Xu Jie et al.Sequencestratigraphy of Carboniferous at Bachu area,TarimBasin.Journal of Central South University(Scienceand Technology),2010,41(1):257～264
[15]李建雄,李明杰,赵秀岐,刘春芳.断陷湖盆层序地层学解释与隐蔽油气藏勘探.石油地球物理勘探,2004,39(5):607～613Li Jian-xiong,Li Ming-jie,Zhao Xiu-qi,Liu Chun-fang.Sequence-sedimentary interpretation in faultlake basin and prospecting of concealed reservoir.OGP,2004,39(5):607～613
[16]赵翰卿.高分辨率层序地层对比与我国小层对比.大庆石油地质与开发,2005,24(1):5～12Zhao Hanqing.High-resolution sequential stratigra-phy correlation and chinese subzone correlation.Pe-troleum Geology&Oilfield Development inDaqing,2005,24(1):5～12
[17]李凤杰,王多云,陈明应.西峰油田延长组长8油组砂体高分辨率层序等时对比分析.成都理工大学学报(自然科学版),2007,34(2):121～127Li Fengjie,Wang Duoyun,Chen Mingying.Isochro-nic correlation of sandbodies with Chang 8oil forma-tion by high resolution sequence analysis in YanchangFormation,Xifeng oilfield,Ordos Basin,China.Jour-nal of Chengdu University of Technology(Science&Technology Edition),2007,34(2):121～127
[2]徐怀大等译.层序地层学原理(海平面变化综合分析).北京:石油工业出版社,1992,49～55
[3]朱筱敏.层序地层学原理.山东东营:中国石油大学出版社,2006,42～48
[4]Galloway W E.Siliciclastic slope and base of slope depo-sitional system:component facies,stratigraphic architec-ture,and classification.AAPG,1998,82:569～594
[5]赵澄林,朱筱敏.沉积岩石学(第3版).北京:石油工业出版社,2001,23～73
[6]刘振峰,郝天珧,王峰,徐亚.地震资料在层序地层学中的应用进展.地球物理学进展,2003,18(1):48～54Liu Zhenfeng,Hao Tianyao,Wang Feng,Xu Ya.Research progress on the application of seismic datain sequence stratigraphy.Progress in Geophysics,2003,18(1):48～54
[7]Zeng Hongliu,Stephen C Henry,John P Riola.Stratal slicing,partⅡ:Real 3-D seismic data.Geo-physics,1998,63(2):514～522
[8]王志坤,钟建华,王多云等.柴达木三湖地区七个泉组高频旋回成因分析.中国石油大学(自然科学版),2008,32(2):1～5Wang Zhikun,Zong Jianhua,Wang Duoyun et al.Ge-netic analysis of high frequency cycles of Qigequanformation of Sanhu region in the eastern Qaidam Ba-sin.Journal of China University of Petroleum(Edi-tion of Natural Science),2008,32(2):1～5
[9]穆星.利用地震几何属性和自组织神经网络进行地震相的自动识别.地质科技情报,2005,24(3):109～112Mu Xing.Method of seismic facies auto-classificationby the seismic geometrical attribute and the self-or-ganizing neural network.Geological Science andTechnology Information,2005,24(3):109～112
[10]沈武显,樊太亮,郭刚,高志前,宫雪.吐鲁番拗陷中下侏罗统层序地层格架内有利储集砂体分布规律.中南大学学报(自然科学版),2009,41(3):1672～1678Shen Wuxian,Fan Tailiang,Guo Gang,Gao Zhiqian,Gong Xue.Development of reservoir sandbody insequence stratigraphic framework of middlelower Ju-rassic in Turpan Sag.Journal of Central South Uni-versity(Science and Technology),2009,40(6):1672～1678
[11]孙志华,吴奇之,张一伟等.层序界面在地球物理资料上的响应特征.石油地球物理勘探,2001,36(5):626～632Sun Zhihua,Wu Qizhi,Zhang Yiwei et al.Responsecharacteristics of sequence boundary in geophysicaldata.OGP,2001,36(5):626～632
[12]袁井菊,陈明,何晓松,马伟.辽河东部凹陷古近系层序地层格架及成因分析.石油地球物理勘探,2006,44(4):350～356Yuan Jing-ju,Chen Ming,He Xiao-song,Ma Wei.Analysis of Tertiary sequence-stratigraphic frame-work and genesis in east Liaohe sag.OGP,2006,44(4):350～356
[13]李思田,林畅松,解习农等.大型陆相盆地层序地层学研究——以鄂尔多斯中生代盆地为例.地学前缘,1995,2(3/4):133～136Li Sitian,Lin Changsong,Xie Xinong et al.Approa-ches of nonmarine sequence stratigraphy:a case studyon the Mesozoic Ordos Basin.Earth Science Fron-tiers,1995,2(3/4):133～136
[14]郭建华,孙磉墩,许杰等.塔里木盆地巴楚地区石炭系层序地层学特征.中南大学学报(自然科学版),2010,41(1):257～264Guo Jianhua,Sun Sangdun,Xu Jie et al.Sequencestratigraphy of Carboniferous at Bachu area,TarimBasin.Journal of Central South University(Scienceand Technology),2010,41(1):257～264
[15]李建雄,李明杰,赵秀岐,刘春芳.断陷湖盆层序地层学解释与隐蔽油气藏勘探.石油地球物理勘探,2004,39(5):607～613Li Jian-xiong,Li Ming-jie,Zhao Xiu-qi,Liu Chun-fang.Sequence-sedimentary interpretation in faultlake basin and prospecting of concealed reservoir.OGP,2004,39(5):607～613
[16]赵翰卿.高分辨率层序地层对比与我国小层对比.大庆石油地质与开发,2005,24(1):5～12Zhao Hanqing.High-resolution sequential stratigra-phy correlation and chinese subzone correlation.Pe-troleum Geology&Oilfield Development inDaqing,2005,24(1):5～12
[17]李凤杰,王多云,陈明应.西峰油田延长组长8油组砂体高分辨率层序等时对比分析.成都理工大学学报(自然科学版),2007,34(2):121～127Li Fengjie,Wang Duoyun,Chen Mingying.Isochro-nic correlation of sandbodies with Chang 8oil forma-tion by high resolution sequence analysis in YanchangFormation,Xifeng oilfield,Ordos Basin,China.Jour-nal of Chengdu University of Technology(Science&Technology Edition),2007,34(2):121～127
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