摘要
无阻流量是评价油气井生产能力的重要指标,也常用于油气井分类、配产和其它公式中参数的无因次化等,它表示井底在完全敞开的情况下油气井的产量。在矿场上,主要利用压力平方二项式和指数式来求取气井的无阻流量,然而前者在满足一定条件下,才能替代拟压力形式的二项式产能方程来求取无阻流量,因此用此方程来计算井底流压不断变化下的气井无阻流量,便有失准确性;后者为经验方程,因此对于某一具体的气井无阻流量的计算,也存在一定的误差。于是本文提出了一种改进的计算方法,将二项式与指数式相结合来求取气井的无阻流量,以便更准确地指导矿场生产。
Absolute open flow is a important index of appraising oil/gas well production capacity,and often used in oil/gas well classification,proration and dimensionless parameters in other equations and so on, it denotes oil/gas productions under full openness of well bottom. On field, we mainly use pressure square binomial deliverability equation and exponential deliverability equation to gain absolute open flow of gas well, but the former , only under some conditions; can replace pseudo- pressured binomial deliverability equation to gain absolute open flow ,so if this equation is used to calculate absolute open flow of gas well of continuously changed bottom pressure, then it loses aeeuraey; the latter is experimental equation, so there will exist errors for calculating some concrete absolute open flow of gas well. So this paper proposes a improved method of combining binomial deliverability equation and exponential deliverability equation to gain absolute open flow of gas well,in order to exactly guide field production.
出处
《内蒙古石油化工》
CAS
2008年第10期91-92,共2页
Inner Mongolia Petrochemical Industry
关键词
无阻流量
无因次化
拟压力
指数式
经验方程
Absolute open flow
Dimensionless
Pseudo -- pressure
Exponential
Experimental equation
