The Hei47 block, typical tectonic reservoir of the Daqingzi oil field, the west fault of which has great influences on distribution of the remaining oil. Basing on the foundation of 3D geological model of Hei47 block, using the black oil E100 of ECLIPSE software to build the numerical simulation, we found that the remaining oil distribute in the non－injection region，and the peak area is mainly near the west fault.By means of integration of 3D geological modeling and reservoir numerical simulation technology，we can forecast the results of different injection-production ratio and production speed, and choose the best reservoir development scheme. This can be fine guidances for oilfields to establish the potential solutions and improve the recovery ratio.