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同距波列静校正方法(简称CFW静校正)是根据地震波动理论,选择初至较好的相同炮检距波列,用相关法进行初至自动拾取,得到不同炮检距沿测线方向展开的初至波延迟时的矩阵。利用这一矩阵,先作高程静校正,然后在炮点、检波点域用统计迭代的方法求取炮点、检波点的剩余静校正量,即CFW短波长静校正量。最后,在炮点、检波点、CDP点域中求取长波长静校正量。该方法既不需考虑低、降速带的厚度和速度,也不依赖于折射波,因此不必作微测井或小折射观测。计算静校正量的全套程序均在微机上实现。
According to the theory of seismic wave fluctuation, the static correction method of the same pitch wave column (referred to as CFW Static Correction) is based on the seismic wave theory and selects the same primary offset wave train of the first arrival to obtain the first arrival automatic pick-up by the correlation method. Expanded first arrival wave delay matrix. Using this matrix, we first make the elevation static correction, and then use the statistical iterative method to get the static statics of the shot point and detection point, that is, the CFW short-wavelength static correction. Finally, the long-wavelength static correction is obtained from the point of shot, detection point and CDP point. The method does not need to consider the thickness and velocity of the low and slow down zones, and does not depend on refracted waves, so it is not necessary to do micro-logging or small-refraction observations. Calculate the amount of static correction of a full set of procedures are achieved in the computer.