Abstract: The structures in Pucheng-Weicheng area of Dongpu sag are complicated and the exploration mainly focuses on the crushing complex fault blocks and lithologic hydrocarbon reservoirs, such as the fault of the narrow space between two adjacent things, and the small fault blocks. The working area features in large-volume seismic data, complex wave field, and interference wave develops. In view of the characteristics of high-precision seismic data of Pucheng-Weicheng area and geological characteristics of the working area, research has been conducted on the fine processing method and high precision seismic imaging technology. High-precision seismic data processing technologies taking high-precision point-to-point velocity analysis, tomographic inversion static correction, prestack time migration, and prestack interference wave suppression as main features are developed. And obvious progress has been made in data processing.

Key words: high-precision 3D seismics, variable suface element, point-to-point velocity analysis, 3D prestack time migration, Pucheng-Weicheng