通过对边缘露头、钻井和地震等资料的综合层序地层分析 ,划分出下八道湾、上八道湾、三工河和西山窑等 4个层序以及湖退体系域 (RST)、湖进体系域 (TST)、高位体系域(HST)和冲积体系域 (AST)等四种类型的 9个体系域。层序形成主要受控于构造作用和湖水进退。RST中形成区域上广布的工业煤层 ;TST中的粗粒退积型辫状三角洲沉积体系中发育很好的储层。快速湖进形成的 TST与构造长期稳定形成的 HST反复叠置构成良好的生储盖组合 Based on the comprehensive sequence stratigraphic analysis of outcrops, drilling and seismic data, four sequences of Lower Badao Bay, Upper Badao Bay, Sangong River and Xishanyao are distinguished, and the sequence of the lake retreat system tract (RST), lacustrine system tract (TST), highstand system tract (HST) and alluvial system tract (AST). The formation of the sequence is mainly controlled by the tectonic movement and lake water advance and retreat. The widespread industrial coal seams are formed in the RST; well-developed reservoirs are developed in the coarse-grained retrograde braided delta sedimentary system in TST. The rapid formation of the TST lake and the formation of long-term stability of the formation of HST repeatedly stacked to form a good reservoir-cap combination