层级式孔板排水采气工艺设计及性能对比

Design and Performance Comparison of Drainage and Gas Production Technology with Hierarchical Orifice Plate

排水采气技术在气井生产过程中占有重要地位,用试验及对比的方式分析验证了层级式孔板排水采气技术的原理,通过安装于管筒内类似于倒置漏斗形的多级孔板,以气体为动能,利用层级式孔板减少液体回流,使液体通过层级式孔板逐级上升.研究发现,加入层级式孔板对于气体和泡沫携液能力具有重要影响:能够提高气体携液能力,减少管筒液体回流量,具有提高排液效果的作用.层级式孔板排水用于气井增产的方法和原理是成立的,与其他排液方式相比,具有原理简单、排液效果好、对环境影响小、效果持久的优势.

Drainage and gas production technology plays an important role in gas well production process.The principle of hierarchical orifice plate drainage and gas production technology is analyzed and verified by means of experiments and comparison.By installing a multi-stage orifice plate similar to inverted funnel in the tube,gas is used as kinetic energy,and hierarchical orifice plate is used to reduce liquid reflux and make liquid pass through.Experiments show that adding orifice plates has an important effect on the liquid carrying capacity of gas and foam.It can improve the gas carrying capacity,reduce the liquid reflux in the tube,and improve the fluid discharge effect.The method of using hierarchical orifice plate drainage to increase production of gas wells are established.Compared with other fluid discharge methods,it has the advantages of simple principle,good drainage effect,less impact on the environment and long effect.