新型高效螺旋式复合气锚数值模拟与分析  

Numerical Simulation and Analysis of New High-Efficient Spiral Composite Gas Anchor

作　　者：赵庆丰 刘捷[1] 柳莉娜 ZHAO Qingfeng;LIU Jie;LIU Lina(School of Petroleum Engineering,Yangtze University,Wuhan Hubei 430199,China;Northwest Natural Gas Sales Center of SINOPEC Natural Gas Branch,Urumqi Xinjiang 830000,China)

机构地区：[1]长江大学石油工程学院,湖北武汉430199 [2]中石化天然气分公司西北天然气销售中心,新疆乌鲁木齐830000

出　　处：《机床与液压》2025年第1期162-167,共6页Machine Tool & Hydraulics

摘　　要：在石油、天然气、煤层气和页岩气勘探与开采领域,当井下流体中含有大量游离气体时,这些气体会严重影响泵的效率。为了减小气体对泵性能的影响,需使用气锚将混合物中的气体分离出来。为实现高效的气液分离,结合重力差式分离和螺旋式分离的优点,研发一种新型螺旋式复合气锚。通过计算流体力学数值模拟方法,对内部流场进行数值模拟,并对工况参数进行优化。同时,对比不同结构参数(如螺旋圈数、螺距和孔眼宽度)对气锚的分离性能和压降的影响。结果表明:入口速度在5~9 m/s时分离性能较好;螺旋圈数对分离效率和压降影响不大;螺距越小,分离效率越高,且压降越大;孔眼宽度越大,分离效率越高,压降越小。In the field of oil,gas,coalbed methane and shale gas exploration and production,when downhole fluids contain a large number of free gases,these gases can seriously affect the efficiency of the pump.In order to reduce the effect of gas on pump performance,gas anchors were used to separate the gas from the mixture.In order to realize efficient gas-liquid separation,a novel spiral composite gas anchor was developed combining the advantages of gravity differential separation and spiral separation.The internal flow field was simulated by numerical simulation method of computational fluid dynamics,and the working parameters were optimized.At the same time,the effects of different structural parameters,such as the number of spiral turns,pitch and hole width,on the separation performance and pressure drop of the gas anchor were compared.The results show that the separation performance is better when the inlet velocity is from 5 m/s to 9 m/s.The number of spiral turns has little effect on the separation efficiency and pressure drop.The smaller the pitch,the higher the separation efficiency and the larger the pressure drop.The larger the hole width,the higher the separation efficiency and the smaller the pressure drop.

关 键 词：螺旋式复合气锚 计算流体力学 数值模拟 气液两相流 分离性能 

分 类 号：TE37[石油与天然气工程—油气田开发工程]