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本文探讨了抽油井环形空间中气液混合物的压力梯度。通过抽油井的室内模拟实验,研究了压力梯度校正系数的计算方法,得出了气液混合物的压力梯度校正系数与气体表观速度之间的关系以及空隙率与气体表观速度之间的关系。
This article explores the pressure gradient of a gas-liquid mixture in the annular space of a pumping well. Through the simulation experiment in oil pumping wells, the calculation method of pressure gradient correction coefficient was studied. The relationship between the pressure gradient correction coefficient of gas-liquid mixture and the apparent gas velocity and the relationship between the void fraction and the apparent gas velocity were obtained .