Abstract: Controlled by boundary faults and the Binxian Uplift, sandy-conglomeratic fans of different geneses such as alluvial fans, fan deltas and turbidite fans were developed in the Lower Tertiary on the northern margin of Binnan oilfield. In this paper, the sedimentary types and corresponding seismic facies of sandy-conglomeratic fans were studied, their sedimentation pattern and seismic recognition pattern were established, and their spatial distribution regularities as well as pool-forming types and rules were summarized. The practice of oil and gas exploration showed that the rules and research methods above are economically effective.