李雪英;程云;聂伟东;万乔升;王福霖;

• 1:东北石油大学地球科学学院

摘要(Abstract)：

倾角域稳相菲涅尔带的确定依赖于预先设定的判别阈值,需要反复优选设定。在偏移过程中引入拉伸畸变校正因子和加权补偿因子,完成浅层拉伸畸变校正和深、浅层振幅均衡处理,得到高质量倾角道集;根据导出的2D菲涅尔带计算公式,以最佳叠加能量为判别准则,采用两步扫描法研究菲涅尔带影响因素——成像倾角和地震波主频,自适应地确定成像点处成像倾角及菲涅尔带范围,建立基于数据驱动的最优偏移孔径确定方法。常孔径和扫描孔径偏移结果局部对比和信噪比分析结果表明:基于两步扫描法的最优偏移孔径成像剖面中偏移噪声得到较好压制,信噪比提高7.37dB,地质构造成像更加清晰。基于两步扫描法的最优偏移孔径确定方法正确、有效,可提升叠前时间偏移成像质量。

关键词(KeyWords)：两步扫描法;最优偏移孔径;倾角道集;第一菲涅尔带;叠前时间偏移

Abstract:

Keywords:

基金项目(Foundation):黑龙江省杰出青年科学基金项目(JC2016006)

作者(Author):李雪英;程云;聂伟东;万乔升;王福霖;

Email:

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