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为提高利用速度谱资料获取地震层速度的准确性,以GeoMountain解释工程师软件系统作为平台,提出了一种新的层速度计算方法,包括区域经验值约束的广义DIX计算层速度、基于广义DIX公式的已知层速度的速度谱反推算法、层速度的沿层计算和方位平滑等新算法。经实际项目验证,用该方法计算的层速度用于时深转换成图,在平面上的变化具有更好的规律性,更加符合实际地质情况。
In order to improve the accuracy of seismic velocities using velocity spectrum data, a new layer velocity calculation method based on GeoMountain interpretation software system is proposed, including generalized DIX computation layer velocity constrained by region empirical value. Based on generalized DIX formula The known layer velocity of the velocity spectrum inversion algorithm, along the layer velocity calculation and azimuth smoothing and other new algorithms. After actual project verification, the layer velocity calculated by this method is used for time-depth conversion into a graph, and the change in the plane has a better regularity and is more in line with the actual geological conditions.