气井井筒携液规律研究

Study on the Law of Wellhole Liquid Carrying in Gas Wells

以李闽模型为基础,并引用彭朝阳研究的曳力系数的计算方法进行了携液临界流速的公式验证,经实验验证,该公式能更准确的预测出气井的积液情况。根据某气井数据,分析了温度和压力对携液能力的影响,得出携液临界流速随温度升高而增加,随压力上升为减少;携液临界流量随温度上升而下降,随压力上升而增加。并根据气井数据,预测了临界积液深度。

Based on the Li Min model, using the calculation method of drag coefficient, the formula of liquid carrying critical velocity was verified. The results show that this formula can predict the situation of the bottom hole liquid loading more accurately. According to the data of a gas well, influence of temperature and pressure on the liquid carrying capacity was analyzed. It＇s pointed out that the critical liquid carrying flow velocity increases with the increase of temperature, and decreases with the increase of pressure; the liquid carrying critical flow rate decreases with the increase of temperature, and increases with the increase of pressure.