摘要
针对目前潜油电泵井下气液分离器处理气体能力有限的问题,基于计算流体动力学方法,运用RSM湍流模型对气液分离过程中气液分离器内部两相流流场开展了数值模拟,同时对气液分离器入口含气率进行了敏感性分析,而且在数值模拟的基础上经过计算得出同一液量不同进气量情况下气液分离器的分离效率。模拟结果和入口含气率敏感分析表明,气液分离器的分离片的数量偏少,导流片的分离导流能力不足,而且分离片和导流片的位置不合理以及导流片距分离头的距离太大;分离器分离效率随入口含气率增加而增大,当入口含气率为70%时分离效率为55.2%,气液分离器的分离效果不理想。
In view of the problem that the downhole gas liquid separator of ESP is limited in gas handling,based on the computational fluid dynamics( CFD) method,RSM turbulence model was used to simulate the gas-liquid two-phase flow field in the gas-liquid separator,the sensitivity of GVF at its intake was analyzed,and the separation efficiency of the separator was calculated with same amount of liquid at different inlet gas rate.Simulation and analysis results showed the number of separation film of gas- liquid separator not enough,insufficient separationand diversion by the inducers,unreasonable relative position between the separation film and the inducers,and the distance between the inducer and separation head too large. It was also shown that separation efficiency of the separator increased with the increase of GVF,the separation efficiency was 55.2% when the GVF was 70%,the separation was not satisfactory.
出处
《钻采工艺》
CAS
北大核心
2016年第5期48-51,103,共4页
Drilling & Production Technology
基金
中国石油天然气股份有限公司"十二五"科技攻关项目"CNPC中国石油海外油气当量上产2亿吨开发关键技术研究"(编号:2011E-2502)部分研究成果
关键词
湍流模型
气液两相流
数值模拟
分离效率
turbulence model
gas-liquid two-phase flow
numerical simulation
separation efficiency
