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多年来,井筒积液一直被认为是影响气井生产的一个很严重的问题。准确的预测积液的形成,对于能否有效地采用合理的方法解决问题起到关键的作用。尽管早期的工作者提出了很多方法用来预测井底积液,但是预测的结果都不够准确,不能适应生产的要求;而且由于井筒中多为多相流动状态,因此这些方法很难进行预测。这就要求产生一个计算准确且易于使用的方法。针对含有4相(气体、油、水、固体颗粒)流动介质的雾状流流动模型,并由此方程与最低动能理论导出一个预测气体临界流速的闭合解析方程。这个方程简单实用,计算结果准确。
Over the years, wellbore fluids have long been considered a serious problem affecting gas well production. Accurately predict the formation of fluid, for the effective use of a reasonable method to solve the problem played a key role. Although early workers proposed many methods for predicting downhole fluid, the predicted results were not accurate enough to meet the production requirements. Moreover, these methods are difficult to predict due to the multi-phase flow in the wellbore. This requires a computationally accurate and easy-to-use method. Aiming at the flow model of haze containing 4 phase (gas, oil, water and solid particles) flow medium, a closed analytical equation of the critical flow velocity of gas is derived from this equation and the lowest kinetic theory. This equation is simple and practical, the calculation result is accurate.