Abstract: The signal-to-noise ratio of r is low in Tarim basin. The interference wave is one of the main factors affecting the deep layer signal-to-noise ratio. Because of complexity of the geologic conditions of the surface and underground in Tarim basin, the noisy type and intensity are varied in different surface structures, different sand dune appearances and different shooting conditions. Hence, the key for deep seismic prospecting is how to reduce the noises and improve the effective weak signals in deep layer. On the basis of analysis of the interference wave characteristic and the quantitative estimation of the signal-to-noise ratio from seismic data, this paper demonstrates the acquisition parameters from the seismic prospecting, presents the method for improving the signal-to-noise ratio, which will play a significant part in accelerate oil-gas exploration in Tarim basin.

Key words: Tarim basin, seismic prospecting, interference wave, signal-to-noise ratio, squire array