The
    surface seismic condition of ZD area is complicated, and mature faults and complicated
    structures is developed, which causes weak seismic reflection signal on target
    interval, low signal-to-noise ratio and resolution. The conventional seismic
    imaging methods are difficult to meet the needs of the exploration and development.
    In order to improve the signal-to-noise ratio and the resolution of the
    middle-deep layer reflections of the hilly region in the east of the ZD area, some
    seismic data processing techniques were applied and analyzed, including static
    correction, prestack multi-domain denoising, surface consistent processing, high-precision
    migration velocity field modeling and prestack time migration. On the time
    migration profile achieved from the above techniques, the characteristics of
    wave group is clear, the signal-to-noise ratio of middle-deep layer reflections
    was largely increased. Meanwhile, the continuity of the events were
    strengthened, the breakpoints and fault sections are clear and reliable.
    Through comprehensive interpretation, the authors achieved a new understanding of the
    structures in ZD area, discovered several new traps with good oil-gas show
    after drilling.