The seismic data collected in the E’xi and Yudong regions of China in 2023, namely the Shizhubei 3D and Jiannanbei 3D data, were analyzed and studied.

Advanced techniques from both domestic and international sources were incorporated, focusing on velocity analysis and processing. Three-dimensional regularization processing and OVT gather processing were performed, establishing an appropriate pre-stack migration velocity model.

Parameters such as pre-stack time migration methods and migration aperture were carefully selected to ensure accurate migration imaging, including precise positioning of reflection waves, sectional waves, diffraction waves, and clear identification of discontinuities.