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在塔里木盆地北部地区，地震资料常规解释提取的界面平均速度规律性差，闭合差和闭合差的均方差大，在对界面平均速度编辑平滑过程中人为因素大，导致提取的界面平均速度和时深转换的构造深度精度低。针对上述问题，提出了另一种界面平均速度提取方法，其步骤为：选择一种拟合函数对叠加速度一时间进行拟合；统计分析出拟合函数系数闭合差中的系统部分并对其进行校正，实现对叠加速度闭合差的校正；依据积分形式的ＤＩＸ公式和经过闭合差校正后的拟合函数，通过变换得到界面平均速度、界面深度与界面反射时间之间的函数关系。
In the northern Tarim Basin, the average velocity of interface extracted by seismic data is poor, and the mean square error of closure difference and closure difference is large. There are many human factors in the process of editing and smoothing the average velocity of the interface, resulting in the average interface velocity and depth of time The depth of conversion is low. In view of the above problems, another method of average velocity extraction is proposed. The steps are as follows: choosing a fitting function to fit the stacking velocity for a period of time; and statistically analyzing the part of the system fitting the coefficient closing difference, The correction is made to correct the closing difference of the stacking speed. According to the integral form of the DIX formula and the closing difference corrected fitting function, the function of the interface average speed, the interface depth and the interface reflection time is obtained through transformation.