Abstract:3-D velocity field smoothing is the most common and important method for 3-D velocity field processing. This method improves the accuracy of 3-D velocity field. The circular ring smoothing method recommended here includes the following steps: · Draw some concentric circles, whose centers are at the smoothing point, thus deviling the velocity grid into some circular rings.· Estimate velocity values in each circular ring by using least-square method.· Acquire the final smoothed velocity by summing these estimated veloeity values and the original velocity at the smoothing point according to different weighting functions.The feasibility of this method is discussed here. It is shown that 3-D velocity field smoothing plays marked role in improving 3-D seismic data processing.
王兰, 王振华. 三维速度场的平滑及其应用效果分析[J]. 石油地球物理勘探, 1989, 24(5): 542-548.
Wang Lan, Wang zhenhua. 3-D velocity field smoothing and the application effect. OGP, 1989, 24(5): 542-548.