【摘要】 凝析气井在生产过程中,随着产气量、产油量、产水量的变化,井筒中不同位置的温度、压力、气液组成、气液摩尔分数和积液情况也发生变化。在考虑井筒温度变化的基础上,分流态综合利用垂直管流公式和井筒携液计算公式,结合流体相平衡热力学闪蒸计算,运用状态方程模拟,提出了凝析气井井筒动态预测方法。实例计算表明,该方法可预测凝析气井不同生产时期井筒内不同位置的温度、压力、气液组成、气液摩尔分数和积液情况,能更好地指导凝析气井的生产。更多还原

【Abstract】 When producing,the temperature,pressure,compositions and molar fractions of gas and liquid as well as liquid loading in different places of a condensate gas borehole are changing with changes of oil,gas and water production rates.The vertical conduit flow and borehole carrying fluid computational formulae by state of flow,considering borehole temperature change,and combining with thermodynamic flashing calculation for fluid phase equilibrium,this paper proposes the method for prediction of borehole performance in condensate gas well.The case calculated results show that this method as a guide for production of such a well can be used to predict these temperature,pressure,compositions and molar fractions of gas and liquid as well as liquid loading situation in different places of a condensate gas borehole in different production stages.更多还原