三维可视化技术在陈家庄地区砂砾岩储集层描述中的应用
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摘要
在对济阳坳陷陈家庄凸起馆陶组—明化镇组河流相砂体、东营组三角洲砂体和沙四段水下冲积扇砂体的解释中,利用三维可视化技术对三维地震数据体直接进行构造解释、岩性分析和沉积环境解释,通过种子点追踪,描述河道11条、三角洲前积砂体15个、水下冲积扇体4个,精细解释出河道、决口扇、废弃河道、前积砂体、冲积沟道等沉积微相和亚相。河道解释结果与实钻资料符合率达91.2%,解释的15个前积砂体已钻遇7个(其中3个含油),水下冲积扇体解释结果展示古冲沟对扇体有明显控制作用。应用三维可视化技术可有效描述不同类型碎屑岩储集层的空间展布规律,为沉积相、沉积微相的研究提供依据,并可利用多种地震属性数据体描述、分析储集层特征。图11参10
In the interpretation of fluvial facies sandstone of Guantao-Minghuazhen Formation, delta sandstone of Dongying Formation, and subaqueous alluvial fan of 4 th member of Shahejie Formation in Chenjiazhuang uplift, Jiyang Depression, the 3D visualization technique is applied in structure interpretation, lithology analysis and sedimentary environment interpretation from the processed 3D seismic data. And 11 channels, 15 delta sandstones and 4 subaqueous alluvial fans are described, and the microfacies and sub-facies such as the channels, burst fan, abandon channel, delta-front slumps and alluvial channel are interpreted. The coincidence rate of the interpretation results and the actual drilling data is 91.2%. The interpretation of the subaqueous alluvial fans illuminates that the fans are controlled by the old alluvial channels.
In the interpretation of fluvial facies sandstone of Guantao-Minghuazhen Formation, delta sandstone of Dongying Formation, and subaqueous alluvial fan of 4 th member of Shahejie Formation in Chenjiazhuang uplift, Jiyang Depression, the 3D visualization technique is applied in structure interpretation, lithology analysis and sedimentary environment interpretation from the processed 3D seismic data. And 11 channels, 15 delta sandstones and 4 subaqueous alluvial fans are described, and the microfacies and sub-facies such as the channels, burst fan, abandon channel, delta-front slumps and alluvial channel are interpreted. The coincidence rate of the interpretation results and the actual drilling data is 91.2%. The interpretation of the subaqueous alluvial fans illuminates that the fans are controlled by the old alluvial channels.
引文
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