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, we achieved a new understanding of the structures in ZD area, discovered several new traps
with good oil-gas show after drilling.
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