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冀东滩海南堡2号构造复杂油气储层叠前地震描述技术及效果

Keywords: 储层描述,obc,地震资料三高处理,岩石物理模拟,avo正演,弹性参数反演,综合评价

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Abstract:

?为了提高复杂油气区储层和流体预测的精度,本文针对冀东南堡凹陷滩海2号构造馆陶组—东一段复杂油气储层,以单块三维2ms海底电缆地震资料为基础,进行了obc处理、叠前地震资料的三高处理、测井资料的岩石物理模拟、avo正演、同时弹性参数反演等方面的一体化应用。确定了本区的岩性流体敏感弹性参数;证实了馆陶组底部玄武岩对下伏地层地震波传播的屏蔽作用,玄武岩顶面随着入射角的增加,其反射系数呈微弱降低的变化规律;主要含油储层的avo特征;通过avo正演与实际地震资料的分析,明确了主要目的层段东一段最大入射角为31°;经同时反演及对同时反演所得到的储层和流体敏感弹性参数的解释,落实了8个有利砂体的分布,并提供了两口钻探井位。

References

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