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薄互层油气藏时移地震反演数据解释

Keywords: 时移地震,薄互层,累积属性,压力,波阻抗差异

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Abstract:

?本文从时移地震薄互层油藏监测的本质出发,首先提出并试验了地震尺度下基于边界理论的弹性参数计算方法;其次利用模型资料,定量分析了时移地震常规属性(如最大振幅、最大阻抗等)和累积属性响应地震尺度测量结果与精确测量结果的差异,以及薄层厚度、薄层组合结构、饱和度变化对属性的影响;然后利用实际气田时移地震纵波阻抗反演数据计算累积差异阻抗与累积差异阻抗的平均值,得到气藏压力变化质量因子与气藏压力变化数量因子;最后采用气藏压力变化质量因子与数量因子的交会分析和乘积分析方法实现了对实际薄互层气藏压力变化动态的监测。

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