In order to find high-quality dolomite reservoirs of the Ordovician Penglaiba Formation in Tahe Oilfield,three-dimensional seismic data and forward modeling were used to identify the anomalous seismic fea-tures,and geological genesis analysis was carried out. The results show that:(1)the anomalous seismic facies of Penglaiba Formation are characterized by multi-layered,short-continuous strong reflection,massive or layered external forms,distributed on one or both sides of faults,longitudinally constrained b...