油田自喷井井底流压计算方法研究及应用

Calculation and Application of Bottom Hole Flowing Pressure in Oil Flowing Wells

在矿场上,井底流压的测试是一种常见的方法,但由于多方面的原因,使得许多井缺乏井底流压数据。因此借用一些计算方法进行井底压力的计算是十分必要的。本文在前人的工作基础上,分析不同流动形态时的空隙率与压降梯度的关系,建立了利用生产数据计算自喷井井底流压的方法,并用实例进行了验证。计算结果与实测值较为接近,能满足工程计算要求。

In the field, testing of bottom hole flowing pressure is a common method, however, due to various reasons, bottom hole flowing pressure data of some wells is lacking. So it is necessary to calculate bottom hole flowing pressure through some method. On the basis of previous work, this article analyzes the relationship between air voids and pressure drop gradient at different flow shape, establishes the method to calculate bottom hole flowing pressure by using production data, and verifies the method with instances. Calculation results are closed to measured values, so they can meet the requirements of engineering calculations.