鄂尔多斯盆地姬塬地区延长组一维模型地震正演研究
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摘要
为减少沉积体解释的多解性,在进行砂体特征描述的基础上,针对姬塬地区延长组中下部岩性体,设计了基于砂泥岩不同组合方式的多种地质模型,进行了正演模拟,总结了各模型的地震响应特征,为定性与定量相结合正确解释和预测岩性体厚度和分布提供了依据,具有较强的针对性。
Based on the characteristic of mid-lower part of lithosome or sand body of Yanchang formation of Late Triassic in Jiyuan area, Ordos basin,multiple geologic models for sand-shale-based combinations are designed for the purpose of reducing the interpretation ambiguity of sedimentary system,and the forward modeling is conducted.The seismic response features of individual model are summarized.The results of forward modeling are proven to be helpful to interpret and predict the thickness and distribution of lithosome or sand bodies qualitatively and quantitatively.
Based on the characteristic of mid-lower part of lithosome or sand body of Yanchang formation of Late Triassic in Jiyuan area, Ordos basin,multiple geologic models for sand-shale-based combinations are designed for the purpose of reducing the interpretation ambiguity of sedimentary system,and the forward modeling is conducted.The seismic response features of individual model are summarized.The results of forward modeling are proven to be helpful to interpret and predict the thickness and distribution of lithosome or sand bodies qualitatively and quantitatively.
引文
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