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作 者:汪晴川[1] 李瑞[1] 蒲平文[1,2] 王身健[1,2]
机构地区:[1]成都理工大学"油气藏地质与开发工程"国家重点实验室 [2]成都物探研究中心,四川成都610212
出 处:《物探化探计算技术》2008年第4期282-287,262,共6页Computing Techniques For Geophysical and Geochemical Exploration
摘 要:通过二维、三维地震剖面,结合长兴组顶部的反射形态和长兴组顶部与底部反射时差等特性,识别出了长兴末期"海槽—前缘斜坡—岩隆—台地"相带,且生物礁主要分布在地震岩隆相带中。针对生物礁储层分布广且体积小,礁岩与围岩物性差异甚大,非均质性强,纵、横向分布不均匀、埋藏较深等特点,利用了以沉积相、地震相研究为基础的储层反演预测思路,以宽方位的3D地震数据为依托的地震属性分析技术,确定了生物礁的形态和分布特征。Using 2D and 3D seismic profiles and the reflected shapes of the Changxing Formation strata, we successfully identified the different facies of 'trough-foreslope-build up-platform' at the 'Changxing' period. The organic reefs are mainly distributed in the rock crown of the seismic profiles. As we known, organic reefs have some characters, such as wide rang , small bulk, great difference between reefs and surrounding rock, high heterogeneity, heterogenetic distribution in horizontal and vertical direction, high burial depth , etc. According to all above, we introduced the reservoir inversion method which is based on sedimentary and seismic facies analysis. With the help of seismic attribute analysis technique in the wide-azimuth 3D seismic data, the shape of organic reefs and their distribution are predicted and carved.
分 类 号:P631.4[天文地球—地质矿产勘探]
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