4 methods for determination of open - flow potential in gas well are discussed , including their theoretical bases , practiceal significances , computing accuracy , applied conditions , advantage and deficiency , inherent relations among the methods 摘要讨论了4种确定气井无阻流量方法的理论依据和实际意义,计算精度与应用条件,优点与不足,不同方法之间的内在联系。