摘要
在假设气井中的液滴是圆球形的前提下 ,1969年Turner导出了气井连续排液最小流速和产量计算公式。实际运用Turner模型 ,往往出现气井产量大大低于计算出的最小携液产量而气井照样正常生产的情况。事实上 ,在高速气流中运动的液滴前后存在一压差 ,在此压差的作用下液滴会变形呈椭球体。考虑液滴变形因素 ,导出了新的计算气井连续排液最小流速和产量公式 ,计算出的最小携液速度和产量只有Turner公式计算结果的 3 8%。实例对比分析表明 ,符合我国积液与没有积液井的实际情况。
In 1969, Turner put forward the formulae of minimum gas velocity and producing rate for continuous removal liquids from gas wells by supposing that the liquid is in spherical shape. However, when these formulae are put into practical use, it has been found that gas well production is not load-up even the producing ra t e of gas wells is much below the producing rate calculated by Turner's formulae. In fact, as a liquid drop is entrained in high velocity gas stream, there exist s a pressure difference between the fore and aft portions of the drop. The liqui d drop is deformed under the applied force and their shape changes from the sphe rical shape to the shape of a convex bean. The paper takes the deformation of li quid droplet entrained in high velocity gas stream into account and deduced new formulae for calculating minimum gas velocity and producing rate for continuous removal liquids. Minimum gas velocity and producing rate calculated by the formu lae is only about 38% of that predicted by Turner's, but the results accord with practical situation of load-up and unload gas wells in China.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2001年第5期105-106,共2页
Petroleum Exploration and Development
基金
油气藏地质及开发工程国家重点实验室开放式基金资助
项目编号PLN 0 1 1 7
关键词
气井
携液
流速
产量
计算公式
Load-up, Interfacial tension, Liquid droplet, Inertial, Natural gas
