涪陵气田页岩气井临界携液流量计算新模型

气井井筒积液会引发产量下降,井口压力降低等一系列问题,影响气井的正常生产。目前对于积液预测所使用的临界携液模型主要有:Tunner模型、Coleman模型、李闽模型等,它们之间的差别为携液系数的变化,无本质区别。为了更准确的预测涪陵气田页岩气井的临界携液流量,基于Tunner模型,考虑返排液量和井斜角对临界携液流量的影响,得到了适用于涪陵气田页岩气井的临界携液模型。

The New Calculation Model of Critical Liquid Carrying Flow Rate in Fuling Gas Field

Gas wellbore fluid accumulatio n will cause a series of problems, such as production decline and wellhead pressure reduction, which will affect the normal production of gas wells. Tunner model,Coleman model and Li Min model are the main critical fluid carrying models used for fluid accumulation prediction. The difference between them is the change of liquid carrying coefficient, but no essential distinction. In order to predict the critical fluid carrying capacity of shale gas wells in Fuling gas field more accurately, based on Tunner model, considering the influence of Flowback liquid and deviation angle on the critical fluid carrying capacity, a critical fluid carrying model for shale gas wells in Fuling gas field is obtained.