The Study Of Development Potential And Countermeasures In Dongxi Block Of Qingpingchuan

Qingpingchuan oil field Chang 2 oil-bearing formation mainly developed mainly for lithologic reservoir and structural lithologic reservoir.Qingpingchuan Chang 2 reservoir porosity is mainly in 10 ~ 15%,; permeability of the majority of less than 5×10-3μm2. According to the reservoir classification standard, qingpingchuan Chang 2 reservoir is low porosity and low permeability sandstone reservoir with low permeability.Used in this study is controlled by lithology based collaborative modeling method, can effectively avoid the reservoir physical property parameters in the model appear not consistent with the actual geological understanding of distribution parameters, such as high porosity and permeability zone appeared in the sand body development area.Research district 2 preliminary the effect of reservoir water flooding, water flooding reserves producing degree is good, but there are many problems in development: stripper well ratio is high, stabilize; Formation energy level is low, the reservoir and fluid properties variation; High water cut ratio increased, the impact of water injection development, etc.; Remaining oil distribution is not clear, exploration direction is not clear.District 2 reservoir were studied with dynamic method for maximum cumulative production and remaining recoverable reserves are calculated, and the development potential in the studied area are analyzed. The next step in the study area stable technology policy is: the partition adjustment of water injection strength, improve the effect of water flooding; Optimizing the water injection process, improve the utilization efficiency of water injection; Perfect injection-production well pattern, improve the formation pressure level; Tapping of remaining oil, slow down production decline.