坪北油田长4+5-长6储层测井二次解释研究及应用

Study and Application of Secondary Logging Interpretation for Chang4+5-chang6 reservoirs in Pingbei Oilfield

坪北油田因老区差油层和干层,含油水层和水层的测井曲线响应不明显,压裂措施效果差异较大。根据坪北油田长4+5-长6储层特征,对测井资料进行标准化处理,同时结合试油、生产情况建立测井二次解释图版,开展室内核磁共振与岩电实验,修正阿尔奇公式参数,提高了利用阿尔奇公式解释地层含油饱和度的精度,为进一步提高注采对应率,挖掘剩余油提供参考。

In Pingbei Oilfield,due to the difference between oil layer and dry layer in the old area,the response of logging curves of oil-water layer and water layer is not obvious,so the fracturing effect is quite different.According to the Chang 4+5-Chang6 reservoirs characteristics,logging data are standardized.At the same time,the second interpretation chart of logging is established in combination with the oil test and production,the laboratory NMR and petro-electric experiments are carried out,and the Archie formula parameters are modified to improve the accuracy of interpretation of formation oil saturation by Archie formula,providing reference for further improving the corresponding rate of injection and production and mining the remaining oil.