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气井的试井分析是气藏开发动态监测和动态分析的一个重要手段。气藏和气井进入开发的中、后期后 ,不同程度地见水使井筒气水两相流动和地层气水两相渗流对试井分析结果的影响日益突出 ,包括常规试井方法和现代试井方法的现有传统试井分析技术受解析解处理方式的限制 ,无法较好地考虑上述复杂因素的影响 ,寻求新的试井分析方法已经成为气田开发对技术发展的一大要求。文章针对天然气开发过程中气水井井筒流动和地层渗流的特点 ,考虑井筒气水两相流动和地层气水两相渗流等对试井分析的影响 ,建立了气水两相地层 /井筒两相组合数学模型并用数值方法进行了求解。为气水井试井开辟了新的途径。
Well test analysis is an important means of dynamic monitoring and dynamic analysis of gas reservoir development. Gas reservoirs and gas wells into the development of the late and later, to varying degrees, see the water to the wellbore gas and water two-phase flow and formation gas-water two-phase seepage analysis of well test results have become increasingly prominent, including conventional well test methods and modern well test The existing traditional well testing technology is limited by the analytical solution processing method, and the influence of the above complex factors can not be considered well. Therefore, finding a new well testing method has become a major requirement for the development of gas fields. In this paper, according to the characteristics of wellbore flow and formation seepage in natural gas development process, considering the influence of wellbore gas-water two-phase flow and formation gas-water two-phase seepage on well test analysis, a gas-water two-phase formation / Mathematical model and solved by numerical method. It opens up a new way for well testing of gas and water wells.