Abstract: With the development of geophysical prospecting technologies, the complex structure and deep Carboniferous become one of favorable areas for petroleum exploration in Junggar basin. However, the imaging quality is often difficult to satisfy the requirement for petroleum exploration due to low signal-to-noise ratio of the seismic profiles in these areas caused from complicated surface and deep burial conditions. Increasing the imaging precision is an urgent task. Using the common reflection surface stack technology (CRS) can obtain higher signal-to-noise ratio than conventional stack profile, particularly, has a certain effect in improving complex structure continuity. In addition, integrated with prestack migration technology in seismic profile processing, CRS is one of effective methods for increasing the information quality.

Key words: first Fresnel belt, zero offset ray, incident angle, aperture, prestack migration, bin