页岩气除砂器性能评价方法现场试验研究

Study on field test of performance evaluation method for shale gas desander

页岩气生产井口气夹带较多砂粒,需要用除砂器对砂粒进行脱除以保证下游生产设备的安全,而目前尚缺乏成熟的除砂器运行效果评价方法。针对这一问题,将声学砂粒监测法和离线砂粒取样分析相结合,测试平均除砂效率和粒径>15μm的砂粒脱除效率,形成了页岩气除砂器运行性能评价方法。声学监测数据与离线取样分析数据对比表明,声学法测试得到的除砂器效率误差在30%以内,该方法可为页岩气除砂器性能的评价以及日常生产管理提供参考。

In the process of shale gas exploiting,sand is carried to the downstream.Sand desander is used to remove sand particles to ensure the safety of production equipment.However,there has no mature method to evaluate the effect of sand desander.In this paper,an acoustic method of sand monitoring add off-line sand sampling analysis are proposed to evaluate the performance of shale gas desander by calculating the average desanding efficiency and the removal effeciency of sand particles which was bigger than 15μm.Comparing with the acoustic monitoring data and the off-line sampling data,the results showed that the error of desander efficiency tested by acoustic monitoring is under 30%.It can provide a reference for the performance evaluation and daily production management of shale gas desander.