顺北油气田含水高含凝析油凝析气井产能评价

Productivity Evaluation of Condensate Gas Wells With Water and High Condensate Oil Content in Shunbei Oil and Gas Field

塔里木盆地顺北油气田断溶体气藏凝析气井地层压力波动明显,与基于地层压力不变的传统系统试井解释方法不适配;由于含水和高含凝析油,常规气井无阻流量的评价结果偏差较大。为实现顺北油气田凝析气井产能评价,利用试井阶段弹性产率修正了系统试井资料,提出了含水和高含凝析油的凝析气井产能评价方法。通过实例验证,该评价方法适用于顺北油气田凝析气井无阻流量的产能评价,为顺北含水高含凝析油凝析气井产能定量认识提供了依据。

The wells drilled in the fault‑karst condensate gas reservoirs in Shunbei oil and gas field of Tarim basin exhibits significant formation pressure fluctuations,making conventional well testing interpretation methods based on constant formation pressure inapplicable.Additionally,due to the presence of water and high contents of condensate oil in gas wells,the evaluation results of open flow rates of the wells deviate significantly.Based on systematic well testing data that are corrected with elastic productivity in the well testing stage,this paper presents a productivity evaluation method for the condensate gas wells with water and high content of condensate oil.The field application validates that this evaluation method is applicable for assessing the open flow rate of condensate gas wells in the Shunbei oil and gas field to provide a quantitative understanding on the productivity of condensate gas wells with water and high content of condensate oil in Shunbei area.