摘要
气井井下油管"动态摩阻系数"的提出改变了气井垂管(井下油管)流动计算的方式,弥补了以往气井井筒流动计算的瑕疵,提高了气井流压梯度计算的精度。在此基础上,首先介绍了计算所需的主要公式,其次针对气田常见的两种井下结构,推荐了两种计算气井井下油管动态摩阻系数的方法;最后用气井的实例进行了计算,并对输入参数、中间环节和计算结果作了进一步的说明。
The proposed 'dynamic friction coefficient' for gas well underground tubing has changed the flow calculation way for the gas wells manubrium (down-hole tubing), made up flaws of well-bore flow calculation and improved the calculation accuracy of gas well flowing pressure gradient. On this basis, the calculation equations have been introduced at first; then, in view of two commonly-existed underground structures, two methods for calculating the dynamic friction coefficient of gas well underground tubing are recommended; at last, by using examples of gas wells, the dynamic friction coefficient is calculated and input parameters, intermediate links and computational solutions are further illustrated.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2008年第5期94-96,共3页
Natural Gas Industry
关键词
气井
油管
流动压力
动态
数学模型
gas well, tubing, flow pressure, dynamic, mathematical model
