摘要
研究气井积液的成因及条件对于防止气井积液十分重要。文章采用气井中被气流携带向上运动的液滴趋于扁平形状的新观点 ,导出了一个新的气井连续排液最小携液速度和产量计算公式。该公式计算出的最小携液速度和产量比经典的Turner最小携液速度和产量公式计算结果要小 ,但实例计算表明更符合现场实际情况。此外 ,为了便于现场应用 ,在分析了影响气井排液的各种因素后 ,文章进一步给出了新公式的简化计算形式。该模型还解释了为什么许多气井产量在大大低于Turner的最小携液产量时 ,仍能继续正常生产的原因。
To prevent gas wells from load-up, it is necessary to study the reason and condition causing the liquid to accumulate in wellbore. In this paper, a new formula for calculating the minimum liquid-carrying velocity and the producing rate for continuously withdrawing the liquid from gas well is derived by adopting a new viewpoint that the moving-up liquid droplet carried by the gas flow in gas wells tends towards a flat shape. The minimum liquid-carrying velocity and the producing rate calculated by use of this formula is smaller than that by use of conventional Turner's formula. However, the calculation example shows that the former is more coincident with the practice. For the convenience of application to wellsite, a simplified formula is given out in this paper after the different factors affecting liquid withdrawal from gas wells are analyzed. The model explains also why many gas wells can normally produce without load-up when the producing rate is far smaller than that calculated by use of Turner's formula.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2001年第5期61-63,共3页
Natural Gas Industry
基金
中国石油天然气集团公司"九五"导向科技攻关项目 (编号 :96 0 80 2 0 2 - 2 )研究内容
关键词
天然气
气井
井眼
连续排液模型
Boreholes
Drop formation
Flow of fluids
Gas loads
Mathematical models
