Abstract: Analyzes main factors of affecting successful gas testing for gas wells with low permeability. It also analyzes different applicable conditions for different gas testing approaches to select suitable testing method for low permeability gas well. Investigation and research an the problems of failure to obtain absolute apen flaw far the creating of deliverability equation in the process of gas testing has been conducted. A productive prediction model has been established for main gas fields after research to predict the corresponding deliverability while farrnaticm pressure changes for the individual well. During the design of the model,the factors of limited flow rate, wet gas and gay testing time are optimized and the design procedure has been improved.

Key words: low pernieability, gas well, gas testing, open flow, deliverability equation, productivity prediction model

摘要： 分析影响低渗透气井试气的因素;通过分析不同试气方法所适用的条件,选择适合低渗透气井的试气方法;对试气过程中无法获取无阻流量,不能建立产能方程等生产实际问题进行调查,经过研究,建立了主要气田的产能预测模型,该模型能够预测随地层压力变化的单井产能;在设计中,对极限排液产量、湿气、试气时间等做了优化,完善了设计程序.

关键词: 低渗透, 气井, 试气, 无队流量, 产能方程, 预测模型