基于Hugoniot关系的气举阀气嘴流动性能分析  

Analysis of flow performance of gas lift valve nozzle based on Hugoniot relation

作　　者：刘承婷[1] 刘钢[1] 闫作秀 仝春玥 张宪 LIU Chengting;LIU Gang;YAN Zuoxiu;TONG Chunyue;ZHANG Xian(School of Petroleum Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318

出　　处：《大连理工大学学报》2019年第2期124-130,共7页Journal of Dalian University of Technology

基　　金：中国石油科技创新基金资助项目(2018D-5007-0206)

摘　　要：气举阀是气举采油关键部件,气嘴流动性能是影响气举系统效率的重要因素,通过CIPT实验的方法,优选合适的气举阀气嘴形状,结合数值模拟方法确定气嘴内部流动性形态、气嘴内部激波面产生位置和两侧物理参数变化规律,并对实验数据与数值模拟结果进行了对比分析.研究结果表明:文丘里气嘴注气比圆台气嘴和圆柱气嘴更稳定,文丘里气嘴的临界流量对应压力比为0.92,圆台气嘴的为0.82,圆柱气嘴的为0.78;在高压实验条件下,气举阀气嘴中会产生激波面,经过激波面后速度降低、压力升高,变化关系满足Hugoniot关系推导式;圆台气嘴与文丘里气嘴相比,激波面产生的位置更靠近入口,产生的激波强度也更高.The gas lift valve is a key component of gas lift production.The flow performance of the gas nozzle is an important factor affecting the efficiency of the gas lift system.The CIPT test method is adopted to optimize the shape of the gas lift valve nozzle and the numerical simulation method is applied to determine the internal fluidity morphology of the gas nozzle,the position of the shock surface inside the gas nozzle and the change rules of physical parameters on both sides,and finally the experimental data and numerical simulation results are compared and analyzed.The research results show that the gas injection stability of the venturi nozzle is more higher than those of the round table nozzle and the cylindrical nozzle.The critical flow corresponding pressure ratio of the venturi nozzle is 0.92,and those of the round table nozzle and the cylindrical nozzle are 0.82 and 0.78 respectively.In the high pressure test condition,a shock surface is generated in the gas lift valve nozzle.After the shock surface,the velocity decreases and the pressure rises.The change relationship satisfies the Hugoniot relationship derivation.Compared to the venturi nozzle,the shock surface of the round table nozzle is located closer to the inlet and shock intensity is higher.

关 键 词：气举阀 气嘴 数值模拟 超音速流动 HUGONIOT 

分 类 号：TE93[石油与天然气工程—石油机械设备]