Abstract: According to core thin section, rock thin section, scanning electron microscope(SEM), physical property, injection-Hg capillary pressure curve and so on, A in-depth research has done on Es³₃ reservoir heterogeneity of Shen84-An12 block in Liaohe basin and its impact on exploitation. The result shows that the reservoir displays strong heterogeneity in the interlamination, the plane and the intraformation. Under microscope it shows that the pore has a bad connectivity, the coordination number is low and the ratio of hole to throat is high. Using its parameters, there is a comprehensive evaluation and classification to the reservoir. Research shows that the mainly petroliferous sandstones layers are Ⅲ reservoir in the area. At the same time, aiming at the influence of heterogeneity to waterflood development, separated zone production, multipass pour water into water injection well and other suggestions have been proposed. After the implementation, the watery ascending rate has been under control, the availability of pour water into block fault has been a positive raise, improved the effectiveness of artificial water drive, raised the recovery ratio of fault block, increased the recoverable resources.

Key words: heterogeneity, reservoir evaluation, intrcate fault-block, Shen84-An12 block