Abstract: The more complicated seismic geologic conditions of Bachu arch in Tarim basin keep its low degrees of exploration so far. This paper, based on interpretation of seismic geologic data from Bachu arch area, presents some new structural traps, and shows band or belted distribution of faults and local structures in this area. Furthermore, following classifying these structural belts and describing structural configuration and trap types, the paper proposed some new knowledge for hydrocarbon controls and the petroliferous prospects in each structural belt, which provide useful basis for continuous exploration of them in future.

Key words: Tarim basin, Bachu arch, structural belt, structural trap, fault, oil and gas resource evaluation