摘要
液滴在水平井筒中的受力情况与垂直井筒中截然不同,根据垂直井筒中质点力学分析获得的计算气井携液临界流量的Turner公式及其修正式不再适用于水平井。根据水平井筒内液滴质点分析理论,推导出水平气井的携液临界流量公式。与水平管气液两相流态机理计算得到的携液临界流量结果的对比结果表明,用质点分析理论计算得到的携液临界流量比气液两相流态机理计算结果要偏于乐观,且其流态正处于环状流和雾状流的过渡区。因此,在实际应用中,用质点分析理论计算的结果可根据生产井实际情况在一定范围内进行调整。
The force acted on the liquid drops of the vertical wellbore is different from that of the horizontal wellbore.The Turner formula and its modified pattern deduced using the liquid drop mass point method for calculating the critical flow rate of carrying liquid in the vertical wellbore are not suitable for the horizontal gas well.According to the mass point method for horizontal wellbore,the equation for calculating the critical flow rate of carrying liquid in horizontal gas well was obtained.The critical flow rate of carrying liquid calculated by the equation was compared with the calculated result using the gas-liquid two-phase flow pattern mechanics of horizontal pipe.The results show that the critical flow rate of carrying liquid calculated by the mass point method is more optimistic than that by gas-liquid two-phase flow pattern mechanics.The flow pattern of carrying liquid just located at the transition region between annulus and mist flow.So,in the practical calculation,the calculation result by the mass point analytic method can be adjusted according to the practical situation in a certain area.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2010年第4期637-639,共3页
Acta Petrolei Sinica
基金
国家自然科学基金项目(No.50604011)资助
关键词
气藏
水平井
携液临界流量
临界速度
气液两相流态
质点分析理论
gas reservoir
horizontal well
critical flow rate of carrying liquid
critical velocity
gas-liquid two-phase flow pattern
mass point method
