水驱油藏多目标井网优化方法新探讨

New Discussion on Optimizing Method of Multi-target Well Pattern of Water Drive Pool

从传统的水驱砂岩油藏采收率与井网密度关系式入手，引入水驱油藏的特征参数对其修正的基础上，结合经济指标应用最优化理论推导并建立了以经济效益为中心、适合混合井网特点的水驱油藏合理井网密度确定模型．提出混合井网加密调整潜力量化方法。为验证该模型的可行性和正确性，将其应用于某油区典型水驱单元的测算。测算结果为：合理单井动用储量为14．49×10^4t／口，具有33口加密调整潜力，其中直井28口，水平井5口。

Beginning with the traditional relationship between oil recovery and well spacing density of waterflooding sandstone reservoir,and based on the revision of characteristic parameter,the identified model is derived and established combining with economic index and taking economic benefits as the center and using the optimization theory that reasonable well spacing density of water-flooding reservoir is suitable to the characteristics of mixed well pattern density.The quantifiable method of adjusting the mixed well pattern infill is proposed.In order to verify the feasibility and exactness of this model,it is applied to predict and calculate the typical water drive unit in certain oil area,which has gotten a satisfactory effect.