利用分层测试资料进行产水油井分层产能评价

Productivity Evaluation of Water-Bearing Well with Stratification Testing Data.

多层合采井产能评价的关键是测量分层动态参数 ,而对于生产测井来说这已是较为成熟的技术。根据常规试井分析中的产能评价方法和油水两相渗流力学理论 ,利用生产测井所测分层测试数据 ,假设油、水两相同层产出时各相的驱动压力相同 ,总产液量等于油、水两相产量之和 ,建立产水油井的分层产能评价模型 ,该模型包括分层产油、产水及总产液能力评价。根据计算结果可以了解并预测各产层的生产状况 ,并可据此决定是否对井采取增产措施。应用实例证实所做假设基本正确 。

The key of layering productivity evaluation a multiplayer producing well is to measure its performance parameters, which is a mature technique of production logging. According to the method of productivity evaluation in well testing analysis and the theory of two phase percolation mechanics of oil and water, it is assume that the driving pressure is the same in each phase as oil and water are produced from the same layer, and the total fluid production is equal to the sum of oil and water production .The layering testing data derived from production logging is used to build an model for evaluating layering productivity in oil and water producing zone, which includes evaluations of oil production, water production and total fluid producing capacity. Based on the result of calculation, the production situation in each zone would be understood and predicted, and determination whether the stimulation is used on the well is made. The application example proves that the assumption is basically correct, the evaluating result is basically consistent with the real production.