OALib Journal期刊
ISSN: 2333-9721
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叠前宽角度反演方法优化及应用
Keywords: 叠前反演,佐普里兹方程,精确解,灰质砂岩,宽入射角,储层描述
Abstract:
?基于佐普里兹方程精确解的叠前宽角度反演克服了由佐普里兹方程近似式带来的条件限制和近似误差的影响,反演精度高,适用于宽入射角地震资料。但佐普里兹方程描述的弹性参数与反射系数之间的关系复杂,对提高反演算法的稳定性和提高反演精度等技术的要求更高。因此,本文基于贝叶斯理论并采用反演参数间相互约束等方法,通过优化扰动量求取、岩石物理关系约束等关键技术的研发,提高反演的稳定性和精度。在ljl地区利用宽角度叠前反演去除了储层中灰质砂岩的影响,成功地刻画出主力砂体边界。
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