塔河油田XX井区白垩系层序—古地理特征
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摘要
在分析钻井、测井资料的基础上,采用井—震结合的方法对塔河油田西北部白垩系高分辨率层序地层和古地理进行了研究,将白垩系划分为1个巨旋回、3个超长期旋回、6个长期旋回、16个中期旋回层序。总体上显示为水进到水退的沉积旋回,可识别出辫状河三角洲、曲流河三角洲和湖泊3种沉积沉积体系,代表了湖盆演化所形成的3个阶段。综合地震属性分析,探讨了各长期旋回层序古地理特征,本区白垩系物源主要由古天山提供,沉积相带主要呈南北向展布,各类砂体向南部逐渐尖灭,受现今南高北低的构造格局控制,易形成构造—岩性复合圈闭。
Based on drilling and logging data analysis,this paper studies the high-resolution sequence stratigraphy and palaeogeography of Cretaceous in northwest Tahe Oilfield by combining wells with seismic data.The Cretaceous can be classified into 1 huge cycle,3 super-long-term cycles,6 long-term cycles and 16 medium-term cycle sequence,shown as transgressive to regressive sedimentary cycle,where 3 kinds of sedimentary systems can be recognized;braided river delta,meandering river delta and lacustrine deposit,representing 3 periods during lake basin evolution.The palaeo-geography features of each long term cycle sequence are also discussed by combing with seismic properties analysis.The source of Cretaceous in this area mainly came from ancient Tianshan Mountains,with sedimentary facies belt distributed as south-north direction.Various sand bodies gradually pinch-out southwards and are prone to form structure-lithology composite trap since they are controlled by the modern structural pattern of"the south part being higher than the north".
Based on drilling and logging data analysis,this paper studies the high-resolution sequence stratigraphy and palaeogeography of Cretaceous in northwest Tahe Oilfield by combining wells with seismic data.The Cretaceous can be classified into 1 huge cycle,3 super-long-term cycles,6 long-term cycles and 16 medium-term cycle sequence,shown as transgressive to regressive sedimentary cycle,where 3 kinds of sedimentary systems can be recognized;braided river delta,meandering river delta and lacustrine deposit,representing 3 periods during lake basin evolution.The palaeo-geography features of each long term cycle sequence are also discussed by combing with seismic properties analysis.The source of Cretaceous in this area mainly came from ancient Tianshan Mountains,with sedimentary facies belt distributed as south-north direction.Various sand bodies gradually pinch-out southwards and are prone to form structure-lithology composite trap since they are controlled by the modern structural pattern of"the south part being higher than the north".
引文
[1]林畅松,王清华,肖建新,等.库车坳陷白垩纪沉积层序构成及充填响应模式[J].中国科学D辑:地球科学,2004,34(S1):74–82.
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[3]郭宪璞,叶留生,李汉敏,等.塔里木盆地白垩纪地层对比格架[J].中国西部油气地质,2006,2(2):140–146.
[4]贾进华.塔里木盆地早白垩世沉积相特征与古地理[J].古地理学报,2009,11(2):167–176.Jia Jinhua.Sedimentary characteristics and palaeogeogra-phy of the Early Cretaceous in Tarim Basin[J].Journal ofPalaeogeography,2009,11(2):167–176.
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[6]贾进华.库车前陆盆地白垩纪巴什基奇克组沉积层序与储集层研究[J].地学前缘,2000,7(3):133–143.Jia Jinhua.Depositional sequence and reservoir of Creta-ceous Bashijiqike Formation in Kuqa Foreland Basin[J].Earth Science Frontiers,2000,7(3):133–143.
[7]孙龙德.塔里木盆地库车坳陷与塔西南坳陷早白垩世沉积相与油气勘探[J].古地理学报,2004,6(2):252–260.Sun Longde.Sedimentary facies and exploration ofpetroleum of the Early Cretaceous in Kuqa Depressionand Southwest Depression in Tarim Basin[J].Journal ofPalaeogeography,2004,6(2):252–260.
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[9]付清平.陆相前陆盆地层序地层学研究以塔里木盆地北部下白垩统地层为例[J].岩相古地理,1997,17(2):1–9.FuQingping.Approachestosequencestratigraphyofcon-tinental Foreland Basins:An example from the Early Cre-taceous Northern Tarim Basin[J].Sedimentary Facies andPalaeogeography,1997,17(2):1–9.
[10]陆亚秋.库车坳陷东部白垩—第三系层序地层及沉积体系研究[D].西安:西北大学,2002.
[11]肖建新,林畅松,刘景颜.塔里木盆地北部库车坳陷白垩系层序地层与体系域特征[J].地球学报,2002,23(5):453–458.Xiao Jianxin,Lin Changsong,Liu Jingyan.Character-istics of Cretaceous Sequence Stratigraphy and SystemTract in Kuqa Depression,Northern Tarim Basin[J].Ac-ta Geosicientia Sinica,2002,23(5):453–458.
[12]严德天,王华,王家豪,等.库车前陆盆地白垩系层序地层样式及控制因素分析[J].沉积学报,2006,24(6):842–848.Yan Detian,Wang Hua,Wang Jiahao,et al.Analysis ofthe Cretaceous Sequence-stratigraphic Pattern and Con-trollingFactorsinKunaForelandBasin[J].ActaSedimen-tologica Sinica,2006,24(6):842–848.
[13]Galloway W E.Genetic stratigraphic sequences inbasin analysis 1:architecture and genesis of flooding-surface bounded depositional units[J].AAPG,1989,73:125–142.
[14]Cross T A.High-resolution stratigraphic correlation fromthe perspective of base-level cycles and sediment accom-modation[C].Preedings of Northwestern European Se-quence Stratigraphy Congree,1994,105–123.
[2]顾家裕,朱筱敏,贾进华,等.塔里木盆地沉积与储集层[M].北京:石油工业出版社,2003.
[3]郭宪璞,叶留生,李汉敏,等.塔里木盆地白垩纪地层对比格架[J].中国西部油气地质,2006,2(2):140–146.
[4]贾进华.塔里木盆地早白垩世沉积相特征与古地理[J].古地理学报,2009,11(2):167–176.Jia Jinhua.Sedimentary characteristics and palaeogeogra-phy of the Early Cretaceous in Tarim Basin[J].Journal ofPalaeogeography,2009,11(2):167–176.
[5]贾承造,张师本,吴绍祖,等.塔里木盆地及周边地层研究[M].北京:科学出版社,2004.
[6]贾进华.库车前陆盆地白垩纪巴什基奇克组沉积层序与储集层研究[J].地学前缘,2000,7(3):133–143.Jia Jinhua.Depositional sequence and reservoir of Creta-ceous Bashijiqike Formation in Kuqa Foreland Basin[J].Earth Science Frontiers,2000,7(3):133–143.
[7]孙龙德.塔里木盆地库车坳陷与塔西南坳陷早白垩世沉积相与油气勘探[J].古地理学报,2004,6(2):252–260.Sun Longde.Sedimentary facies and exploration ofpetroleum of the Early Cretaceous in Kuqa Depressionand Southwest Depression in Tarim Basin[J].Journal ofPalaeogeography,2004,6(2):252–260.
[8]郭宪璞,王大宁,丁孝忠,等.塔里木盆地北部早—中白垩世孢粉时代和生物地理区系研究新进展[J].地质论评,2011,57(6):870–880.Guo Xianpu,Wang Daning,Ding Xiaozhong,et al.Ear-ly—Middle Cretaceous Sporopollen Assemblages andNew Progress on Biogeography in the Northern Partof Tarim Basin[J].Geological Review,2011,57(6):870–880.
[9]付清平.陆相前陆盆地层序地层学研究以塔里木盆地北部下白垩统地层为例[J].岩相古地理,1997,17(2):1–9.FuQingping.Approachestosequencestratigraphyofcon-tinental Foreland Basins:An example from the Early Cre-taceous Northern Tarim Basin[J].Sedimentary Facies andPalaeogeography,1997,17(2):1–9.
[10]陆亚秋.库车坳陷东部白垩—第三系层序地层及沉积体系研究[D].西安:西北大学,2002.
[11]肖建新,林畅松,刘景颜.塔里木盆地北部库车坳陷白垩系层序地层与体系域特征[J].地球学报,2002,23(5):453–458.Xiao Jianxin,Lin Changsong,Liu Jingyan.Character-istics of Cretaceous Sequence Stratigraphy and SystemTract in Kuqa Depression,Northern Tarim Basin[J].Ac-ta Geosicientia Sinica,2002,23(5):453–458.
[12]严德天,王华,王家豪,等.库车前陆盆地白垩系层序地层样式及控制因素分析[J].沉积学报,2006,24(6):842–848.Yan Detian,Wang Hua,Wang Jiahao,et al.Analysis ofthe Cretaceous Sequence-stratigraphic Pattern and Con-trollingFactorsinKunaForelandBasin[J].ActaSedimen-tologica Sinica,2006,24(6):842–848.
[13]Galloway W E.Genetic stratigraphic sequences inbasin analysis 1:architecture and genesis of flooding-surface bounded depositional units[J].AAPG,1989,73:125–142.
[14]Cross T A.High-resolution stratigraphic correlation fromthe perspective of base-level cycles and sediment accom-modation[C].Preedings of Northwestern European Se-quence Stratigraphy Congree,1994,105–123.
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