延长青平川油田长2储层最终采收率预测分析

结合延长青平川油田构造特征及区块储层物性和实际电测结果，采用容积法计算得到长2储层地质储量为517．14×10^4t；同时，选择6种不同水驱曲线预测该储层的可采储量，分析对比并结合油田开采结果，可以预测长2储层最终采收率：经济极限含水率为95％时，最终采收率在8．16％左右，经济极限含水率为98％时，最终采收率在9．17％左右。

Prediction of Final Recovery Efficiency of Chang2 Oil Reservoir in Yanchang Qingpingchuan Oilfield

According to structural characteristics and logging data of Qingpingchuan oilfield, the volumetric method was used to calculate the geological reserves of chang2 oil reservoir. At the same time, recoverable reserves were predicted by six different water drive curves. Combined with practical production situation of oilfield, predicted results were analyzed and compared, then final recovery efficiency of chang2 oil reservoir was predicted as follows ： when economic limit water-cut was 95% or 98%, the final recovery efficiency was 8.16% or 9.17%.