应用逐步判别法进行油水窜流通道预测研究

Application of Stepwise Discriminant Method in Prediction of Oil and Water Channeling

注水开发油田因地质和工程因素造成的日益突出的层内层间矛盾,导致直接运用地质和生产参数很难准确判断存在窜流通道的油水井对,进而影响合理调整方案的制定。本次研究选取影响储层大孔道形成的10个因素,将逐步判别分析方法应用于具体的窜流层位的识别中,建立窜流通道综合评判分析模型,并对待判样品进行识别。研究表明,该模型误判率较低,有助于预测、识别具有窜流通道的油水井对。

Because of geological and engineering factors,the development of oil fields with water- injection increasingly meet contradictions between layers,and direct application of geological and production parameters is difficult to accurately determine the presence of channeling oil wells; thus it is obstacle to the development of rational adjustment programs. This paper selects 10 factors affecting the formation of large pore reservoir,and stepwise discriminant analysis method is applied to identify the specific channeling horizons. Above this we create a comprehensive discriminant analysis model channeling for evaluation and treatment to identify certain samples. Studies have shown that this model has low false positive rate and is an effective method for predicting and identifying the channeling of oil wells.