| 摘要 |
Method of determining the velocity V and anellipticityηparameters for processing seismic traces in a common midpoint (CMP) gather comprising:—a preliminary step to define a plurality of nodes (dtn,τo), for each node (dtn,τo) defined in the preliminary step, the following steps:—for static NMO correction of traces in the CMP gather as a function of the values of the said parameters dtn andτo at the node considered, and calculation of the semblance function associated with the said NMO correction for the node considered; and—for each picked time to, a step including determination of the maximum semblance node (dtn (to),τo (to)),—and a final step to convert the dtn (to) andτo (to) parameters, so as to obtain the velocity to) and anellepticityη(to) laws. |
