消除倾角影响的振幅曲率及其加权算法

Amplitude curvature calculation with dip influence elimination and its weighting method

为提高振幅曲率的精度和计算效率,提出基于最小均方根振幅差的倾角搜索算法,沿着求取的地层方向计算振幅曲率。传统振幅曲率通常采用相干能量进行加权,需要构造协方差矩阵并求其特征值,文中使用中心道的均方根振幅对振幅曲率进行加权,避免上述矩阵运算,提高了计算效率。实际数据测试表明了该方法的有效性和适用性。

To improve the precision and the efficiency of amplitude curvature calculation,we propose in this paper a new algorithm using dip-scanning and rootmean-square amplitude weighting. Conventional amplitude curvature calculations need covariance matrix and its eigenvalue calculations.But in our algorithm amplitude curvature is weighted by the central traces root-mean-square amplitude avoiding coherent amplitude weighting and coherent energy weighting.Real data tests show that the proposed algorithm has both higher precision and higher efficiency.