Abstract: Restrained by various difficult conditions, there occurred big differences and serious contradictions in complex faulted blocks reservoir development of Xinglongtai block. In recent years, with the development of water flooding technology and supporting measures, on the basis of fine reservoir description, making focus on water flooding research and implementation, comprehensive adjustment such as well pattern infilling as well as diversified development manners have been carried out, which aims to increase the development reserves that are hard to produce and lays a good foundation for secondary development of oilfield.