Fetkovich综合IPR、三相IPR相关式及其应用

因Fetkovich方法是在现场测试数据的基础上得来,在IPR预测方面具有其独特的优势。在Fetkovich方法基础上,结合单相流和油气两相流动特点,推导出了基于Fetkovich方法的综合IPR方法,并给出了如何通过测试数据获得采油指数的计算方法。再由按含水率取纯油IPR曲线和水IPR曲线的加权平均,推导出了基于Fetkovich方法的三相流的采液指数计算方法和某一产量下流压计算方法。最后分别给出了实例进行验证,说明导出方法具有一定可行性。

Fetkovich composite IPR, three-phase IPR correlation and its application

The Fetkovich method was derived on the basis of field experiments, so it has its unique advantages in the IPR prediction. In this paper, the Fetkovich compositeIPR method was derived according to the flow characteristics of single-phase flow and two-phase flow on the basis of Fetkovich method, and the calculation method of the oil production index on the basis of test data is given; according to the weighted average by water cut from pure oil IPR curve and IPR curve of water, the calculation methods of liquid production index of three-phase flow and the flow pressure of well bottom in an certain production rate were derived on the basis of Fetkovich method, finally the feasibility of the two methods was proved by the given examples.