论文详情
全波形反演已成功应用于海上地震资料，而陆上地震资料全波形反演应用还面临诸多难点。研究给出了一种针对陆上地震资料的全波形反演策略：首先采用相位拟合互相关目标泛函增强全波形反演的适用性；其次构建动态波数域滤波梯度预处理方法压制梯度噪声；最后采用构造倾角信息约束的自适应高斯平滑算子改善反演结果质量。二维陆上地震资料的反演结果表明，该策略可有效实现陆上地震资料高波数全波形反演速度建模。
Full waveform inversion of marine seismic data has been successfully applied,however,the application of this technology for onshore seismic data faces many difficulties.In this study,a robust strategy of full waveform inversion for onshore seismic data is presented.Firstly,the phase-matched cross-correlation cost function is adopted to improve the applicability of full waveform inversion.Secondly,dynamic wavenumber domain gradient preprocessing method is used to suppress gradient noise.Finally,an adaptive Gaussian smoothing operator is applied to improve the quality of inversion results.The inversion case of two-dimensional onshore seismic data shows that this strategy presented in this study can effectively realize high wavenumber onshore seismic data velocity modeling.
国家科技重大专项(2016ZX05014-001-002)资助。