结构增强扩散在地震资料构造解释中的应用

Application of structure enhancement diffusion to seismic data interpretation

为了提高地震资料构造解释的效率和准确性,提出结构增强扩散方法提高地震资料质量。将地震资料转换为地震图像,通过提取地震图像结构张量,使用双边滤波器求取梯度值,结构增强扩散方法根据地震图像纹理不连续的方向和强度信息自动判断阈值,实现在断点处保持不连续特征的同时,增强地震同相轴的连续性,从而提高地震图像横向分辨率和突出地震资料中的构造特征。应用结果表明,结构增强扩散处理能够提高地震图像复杂构造的显示效果,有助于提高构造解释精确度,并且能够提高计算机自动解释的合理性。

To improve the efficiency and accuracy of the seismic structure interpretation,a method of diffusion is put forwaed to enhance the seismic image quality.The method converts the seismic data to seismic image,and then extracts structure tensor from the seismic image.With the gradient obtained by bilateral filter,the structure enhancement diffusion can preserve the orientation and magnitude of the discontinuities without needing threshold switches.The structure enhancement diffusion the allows the noise to remove and the structure to enhance cohen enhancing the discontinuity and coherency along the strata.The results applied show that the technique facilitates seismic image enhancement for structure interpretation and improves visualization of the complex tectonic style.