| 摘要 |
Method of determining the velocity V and anellipticity h parameters for processing seismic traces in a common midpoint (CMP) gather comprising: -a preliminary step to define a plurality of nodes (dtn, t 0) - for each node (dtn, t 0) 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 and t 0 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 t0, a step including determination of the maximum semblance node (dtn(t0), t 0 (t0)) - and a final step to convert the dtn (t0) and t 0(t0) parameters, so as to obtain the velocity (t0) and anellepticity h (t0) laws. |
