气井产能测试现场影响因素分析

Analysis of Field Factors Affecting Deliverability Testing in Gas Wells

通过求解地层压力及产能方程、无阻流量的具体实例,分析了测试现场诸多因素对气产量、井底流压的影响。影响因素包括仪器性能、测试环境及不恰当操作等,其中有些影响因素隐蔽,易被忽略,但直接影响到试井资料的准确性及对气井的分析评价。对此提出了相应的解决策略。

This paper analyzes the influence of several field factors to gas production rate and bottom-hole flowing pressure by calculating formation pressure,deriving deliverability equation and calculating absolute open flow potential in some field examples;these factors include properties of test instruments,test environment and operation etc.,some of them influence directly the accuracy of test data and evaluation of the tested well but are concealed and so can be ignored easily.Methods for solving these problems are proposed.