Abstract：The Venezuela exploration area is complexstructural zone developed salt dome, diapir and o-verthrust structure, the wave-equation prestackdepth migration of common shot domain data isconsidered as an important and effective tool forseismic migration imaging in complex structural ar-ea. The technique is mainly divided into two steps:the first step is to use wave equation of one-waywave for downward continuation of wavefield fromshot and receiver points respectively;the secondstep is imaging adjustment, that is, at each imagingpoint, the relevant processing is implemented forcontinuous wavefield at receiver and shot pointsobtained from the continuation. The shortcomingof wave-equation prestack depth migration of com-mon shot domain data is more losses of high-fre-quency components that make the section strongcohenrence and poor migration background. The paper analyzed the parameters tests and existed is-sues of wave-equation prestack depth migration ofcommon shot domain data, and considered that thefactors such as strong coherent background, CPUcomputational capacity, higher demand on ampli-tude compensation precision of seismic data haveinfluence on popularization of the technique. Thepaper considered that in a receivable migrationtime-consuming condition, the migration back-ground could be improved by doing our effort toselect the higher input frequency rage. The casesshowed that in structure-complex area, the imagingeffects of prestack migration is better than that ofprestack time migration and wave-equation pres-tack depth migration of common shot domain datais better than the Kirchhoff prestack depth migra-rion.
