公开(公告)号：US10670751B2

公开(公告)日：2020-06-02

申请号：US15080729

申请日：2016-03-25

申请人： CGG SERVICES SA

发明人： Botao Qin ,  Gilles Lambare

IPC分类号： G01V1/28 ,  G01V1/30

摘要： A preserved-amplitude RTM-based FWI method is used to obtain an image of an explored subsurface formation. Model data corresponding to detected data is generated using a velocity model of the formation. Residuals representing differences between the modeled data and the detected data are back-propagated to then update the velocity model a local optimization based on a deconvolution formula employing a backward propagating wavefield and a forward propagating wavefield. Geophysical features of the formation are imaged based on the updated velocity model.