鲁北济阳坳陷东营凹陷南坡沙河街组第四段上亚段高分辨率层序地层格架
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摘要
应用高分辨率层序地层学与沉积学等理论,通过对地震、录井、测井资料的分析,对鲁北东营凹陷南坡沙河街组第四段上亚段进行了高分辨率层序地层学的划分与对比,总结出各层序地层单元及其界面在录井和地震资料中的判识标志,把研究区基准面旋回划分为短期、中期和长期3个级别的旋回层序。整个沙河街组第四段上亚段由一个长期基准面旋回组成,并划分出5个中期基准面旋回,首次建立了研究区内该亚段高分辨率层序地层格架,有利于东营凹陷南坡该亚段沉积微相和储层结构描述等精细地质研究的进一步开展。
High-resolution sequence stratigraphic classification and correlation are made for the Upper Submember of the Fourth Member of the Shahejie Formation on the southern slope of the Dongying subbasin, northern Shandong, based on the theories of high-resolution sequence stratigraphy and sedimentology and an analysis of well log data and seismic information, and summarizes the markers for recognition of various sequence stratigraphic units and their boundaries in well logs and seismic data. The base-level cycle in the study area is divided into the short-term, medium-term and long-term cyclic sequences. The Upper Submember of the whole Fourth Member of the Shahejie Formation is composed of a long-term base-level cycle, which is subdivided into five medium-term base-level cycles. The authors have for the first time established the high-resolution sequence stratigraphic framework of the submember. All these studies are conducive to intensive geological studies such as the sedimentary microfacies study and detailed description of reservoir structure in this submember on the southern slope of the Dongying subbasin.
High-resolution sequence stratigraphic classification and correlation are made for the Upper Submember of the Fourth Member of the Shahejie Formation on the southern slope of the Dongying subbasin, northern Shandong, based on the theories of high-resolution sequence stratigraphy and sedimentology and an analysis of well log data and seismic information, and summarizes the markers for recognition of various sequence stratigraphic units and their boundaries in well logs and seismic data. The base-level cycle in the study area is divided into the short-term, medium-term and long-term cyclic sequences. The Upper Submember of the whole Fourth Member of the Shahejie Formation is composed of a long-term base-level cycle, which is subdivided into five medium-term base-level cycles. The authors have for the first time established the high-resolution sequence stratigraphic framework of the submember. All these studies are conducive to intensive geological studies such as the sedimentary microfacies study and detailed description of reservoir structure in this submember on the southern slope of the Dongying subbasin.
引文
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[8]柯光明,郑荣才,高红灿.胜坨油田一区沙河街组二段1～3砂组高分辨率层序地层学[J].成都理工大学学报,2004,31(2):139-147.
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[10]郑荣才,彭军,吴朝容.陆相盆地基准面旋回的级次划分[J].沉积学报,2001,19(2):249-255.
[2]Cross T A,Lessenger M A.Sediment volume partitioning:Ratio-nale for stratigraphic model evaluation and high-resolution strati-graphic correlation[R].Accepted for Publication in NorwegianPetroleums-Forening Conference Volume,1996.1-24.
[3]Cross T A著.杜宁平译.据高分辨率层序地层学认识地层结构对比概念体积分配相分异和储层的间隔单元划分[J].国外油气勘探,1996,8(3):285-294.
[4]荣启宏.东营凹陷西南部油气勘探与开发[M].北京:石油工业出版社,2002.3-7.
[5]赵澄林,朱平.高邮凹陷高分辨率层序地层学及储层研究[M].北京:石油工业出版社,2001.19-23.
[6]姜在兴,操应长.砂体层序地层及沉积学研究——以山东惠民凹陷为例[M].北京:地质出版社,2000.17-21.
[7]邓宏文,王洪亮,李熙喆．层序地层基准面的识别、对比技术及应用[J].石油与天然气地质,1996,17(3):177-184.
[8]柯光明,郑荣才,高红灿.胜坨油田一区沙河街组二段1～3砂组高分辨率层序地层学[J].成都理工大学学报,2004,31(2):139-147.
[9]崔光峰,汪庆芳.高分辨率层序地层分析技术及其应用[J].断块油气田,2003,10(3):32-36.
[10]郑荣才,彭军,吴朝容.陆相盆地基准面旋回的级次划分[J].沉积学报,2001,19(2):249-255.
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