速度管柱技术在鄂尔多斯盆地气井中的应用优化研究

Application of velocity string technology in gas wells in Ordos Basin

为了提高速度管柱工艺在低产低效井增产、稳产措施中的应用效果,针对鄂尔多斯盆地气井的生产特点,基于Turner模型和Li模型,以压降损失、携液量表征速度管柱井筒积液规律,进而优化管柱的尺寸及下入深度。结果表明:目标区块施工用的速度管柱油管的最佳尺寸为38.1 mm,下入深度应在喇叭口以上5~10 m,此时目标井产气量提升145.6%。

In order to improve the application effect of velocity string technology in low production and low efficiency wells,aiming at the production characteristics of gas wells in Ordos Basin,based on Turner model and Li model,the wellbore fluid accumulation law of velocity string was measured by pressure drop loss and fluid carrying,so as to optimize the size and running depth of the string.Results show that the optimal size of the velocity string for the construction of the target block was 38.1 mm tubing,and the running depth should be5-10 m above the bell mouth.The application of this technology resulted in a 145.6%increase in the target well gas production.