Geological model is set up by using seismic data interpretation result to perform ray - trace forward modeling analysis , and to guide the establishment of initial velocity model of pre - stack depth migration , thus reaching the purpose of precise image of complex structure under complex surface 利用已有地震資料解釋成果,建立地質(zhì)模型進(jìn)行射線追蹤正演模擬分析,從而指導(dǎo)疊前深度偏移初始速度模型的建立,達(dá)到了復(fù)雜地表下復(fù)雜構(gòu)造精確成像的目的。