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本文根据井筒内流体温度和压力的分布特征,引入了水密度的温度修正以及气体修正参数,通过积分的方法建立了新的考虑井筒内流体性质随温度压力变化的井底压力折算方法。并与现场实测数据进行了对比。结果表明,该方法计算的抽油井井底压力与压力计实测值误差较小。验证了该方法的正确性、稳定性和可靠性。
Based on the distribution of fluid temperature and pressure in wellbore, temperature correction of water density and gas correction parameters are introduced. A new method of calculating bottom hole pressure considering the change of fluid properties in wellbore with temperature and pressure is established by integral method. And compared with the field measured data. The results show that the calculated error between the bottom hole pressure of the oil extraction well and the measured value of the pressure gauge is small. The correctness, stability and reliability of this method are verified.