气井涡流排液采气工具参数仿真及结构优化  

Numerical Simulation and Structural Optimization of Vortex Tool for Liquid Discharge in Gas Well

作　　者：吴丹[1] 颜廷俊[1] 谢双喜[2] 姜丰华[1] 

机构地区：[1]北京化工大学机电工程学院 [2]中海油能源发展股份有限公司工程技术分公司

出　　处：《石油机械》2014年第8期111-115,共5页China Petroleum Machinery

摘　　要：为了研究不同结构参数对气井排液效果的影响,采用Fluent流体仿真软件对涡流排液采气工具进行了流场模拟。建模时采用雷诺平均假设下的N-S方程作为计算的基本方程,并采用RSM模型对N-S方程进行封闭,同时采用壁面函数处理壁面边界层的流场。分析结果表明,涡流工具的顶角对整体流场影响较小,使用时仅需满足打捞头相关尺寸即可;减小螺旋角对分离效果影响不大,同时减小螺旋角会大幅增加压力损失,因此选取螺旋角为70°;内柱直径为45 mm时有利于气、液两相的分离;最好选用1.50倍导程,倍数过大时会增加能耗。In order to study the effect of structural parameters on liquid discharge performance of the vortex tool in gas well, the Fluent software is used to simulate the vortex tool. In modeling, the N-S equation under the assumption of Reynolds average is used as the basic equation, and RSM model is used for closing N-S equation. While the wall function is adopted to process flow field of wall boundary. The results show that the vertex angle of the vortex tools has little effect on the overall flow field and only need to be adjusted according to the relevant dimensions of the fishing head. The decrease of the helix angle has little effect on the separation performance but will substantially increase the pressure losses, and the optimized helix angle is 70°. The inner column with the diameter of 45 mm is better for gas-liquid two-phase separation. The energy consumption will increase with too large helix lead number, and the optimized number is 1.50.

关 键 词：涡流排液 气井 数值模拟 螺旋角 导程 顶角 

分 类 号：TE377[石油与天然气工程—油气田开发工程]