新庄稠油低阻油层测井解释方法研究

新庄稠油低阻油层与水层的电阻率差别不大,常规测井方法很难识别,需要寻找更有效的适合低阻油层的解释方法。以岩心分析、试油、投产等资料研究为基础,建立了参数解释图版;用中子孔隙度曲线同介电常数、相位角曲线重叠识别油层;用介电测井资料结合常规测井资料综合进行稠油低阻油层解释。实际应用证明,该方法能够有效区分新庄稠油低阻油层与水层,提高了解释符合率。

Research on Well Logging Interpretation Methods of Low Resistivity Layers in Xinzhuang Heavy Oilfield

The resistivity difference between low-resistivity oil zones and water zones was very small in Xinzhuang Heavy Oilfield,so it was difficult to distinguish them with conventional logging methods.Therefore,to find a more effective interpretation method for low-resistivity oil layers was imperative.It gives out the calculation equations of oil zone parameters by using coring data,testing data and production data,and a method of distinguishing oil zones from water zones by overlapping neutron porosity curve and dielectric constant curve or overlapping neutron porosity curve and phase angle curve.And it also gives out a comprehensive interpretation method of combining conventional logging data with dielectric logging data to identify low-resistivity layers.Applications show that this comprehensive interpretation method is effective in distinguishing low-resistivity oil layers from water layers in Xinzhuang Heavy Oilfield,and it improves the coincidence rate of interpretation.