气井合理管径的确定

根据气井生产系统分析方法，得到采用小于某油管直径生产会扼制气井的产能；根据气井流入动态曲线和油管携水曲线的分析，得到采用大于某油管直径生产井筒会出现积液；综合考虑以上两点，便可得到气井合理油管直径；从而建立了既考虑地层能量的供给能力和井筒举升能力，也考虑井筒携液能力的气井合理油管直径计算方法，能更好地指导气井的生产。根据实例，说明了气井合理油管直径计算方法的应用，具有广阔的应用前景。

THE DETERMINATION OF REASONABLE GAS WELL TUBE DIAMETER

Based on analyzing production system of gas wells,a result is obtained that utilizing the tube smaller than a certain diameter will restrain productivity of gas well during production.On the other hand,according to the analysis of the inflow dynamic curves and tube watercarrying curves,it is also demonstrated that there will be liquidaccumulated in well bore if the tube bigger than a certain diameter.In light of the two viewpoints above,the reasonable diameter of tube can be decided.Thereby,the calculation method that the energy supply and well bore rising abilities are considered in terms of formation energy,but also liquidcarrying ability of well bore,can be achieved and will guide the production of gas wells.With case study,it is pointed out that this method has its broad application prospect.