Abstract: As Zhangdian-Baiqiu block is characterized by abun dant hydrocarbon resources,structural fractures and compli cated structures,there was no clear understanding on reser voir characteristics.In recent years,through technique ap plication covering 3D seismic data fine interpretation,log ging interpretation and exploratory directional drilling,com bined with geology,well logging,mud logging and analytical experiment data,basic seismic and geologic research have been carried out in Baiqiu block.As a result,the structural framework has been made clear.On the basis of reservoir characteristics,accumulation law and reservoir scale,a se ries of effective methods on progressive exploration and development have been worked out,achieving obvious effect in application and providing significant guidance for progressive development of complex fault block.