Reverse time migration (RTM) is a high-precision imaging method for complex structures. However, without considering seismic anisotropy of the subsurface, RTM utilizing the anisotropic seismic data may produce blurred structure images with incorrect positions. Moreover, some exploration targets with insufficient illumination cannot be effectively identified in the migration profile, especially the subsalt structure which is usually the favorable petroleum region for the hydrocarbon reservoir. Therefore, we develop a target-oriented RTM in transverse isotropy media (TO-TIRTM). Instead of classical RTM, the novel method extracts wavefields that carry relatively more information about the exploration target to image structure. In the imaging condition, the constraint with excitation time is introduced to eliminate the interference of multipath on the image. Using synthetic examples, we determined that the kinematic characteristic of wavefield is closely related to anisotropic parameters, and the proposed method has prominent advantages over conventional RTM for imaging insufficient illumination structure.

逆时偏移（RTM）是用于复杂结构的高精度成像方法。但是，在不考虑地下地震各向异性的情况下，利用各向异性地震数据的RTM可能会生成位置不正确的结构模糊图像。此外，在运移剖面中不能有效地识别出某些照明度不足的勘探目标，尤其是盐下结构，它通常是油气藏的有利石油区。因此，我们在横向各向同性介质（TO-TIRTM）中开发了一种面向目标的RTM。代替经典的RTM，该新颖方法提取波场，该波场携带有关勘探目标的相对更多信息至图像结构。在成像条件下 引入了激励时间约束，以消除多径对图像的干扰。通过综合实例，我们确定了波场的运动学特征与各向异性参数密切相关，并且该方法相对于常规RTM具有显着的优势，可以对不足的照明结构进行成像。