基于FLUENT的井下满眼涡流工具分析  

Analysis on Downhole Full-hole Vortex Tool based on FLUENT

作　　者：高素娟 高亚罡[2] 王毅博 GAO Sujuan;GAO Yagang;WANG Yibo(College of Mechanical Engineering,Xi’an Shiyou University,Xi’an 710065,China;Exploration and Development Technology Research Center of Yanchang Oilfield,Xi’an 710075,China)

机构地区：[1]西安石油大学机械工程学院,陕西西安710065 [2]延长油田股份有限公司勘探开发技术研究中心,陕西西安710075

出　　处：《化工技术与开发》2018年第2期59-63,共5页Technology & Development of Chemical Industry

摘　　要：井下涡流工具用于消除井筒积液,提高排水采气效率。涡流工具外径与油管内径之间为实现下放必须存在间隙,而间隙使得涡流工具在工作状态下气液混合流在缝隙内不经过旋流直接流出,导致涡流排水采气的效果大大降低。因此,针对此问题设计了井下满眼涡流工具,应用Solidworks建立了三维模型,建立其简化模型导入Ansys进行网格划分,最后在Fluent中进行流场模拟,与现有涡流工具进行对比。对比结果表明,新型满眼涡流工具的排液效果优于现存非满眼涡流工具,相对于非满眼涡流工具,平均携液率提高了2.06倍,携液能力更强。此外,平均压降相对于非满眼涡流工具降低了20.336%,水力损失更小。Downhole vortex tools were used to eliminate the liquid loading and improved the efficiency of drainage and gas recovery.In order to put down the vortex tool successfully,there must be a gap between the outer diameter of the vortex tool and the inner diameter of the tubing,but the existence of the gap made parts of two-phase flow out of the vortex tool without flowing with the swirling device.This phenomenon greatly reduced the effect of water-drainage gas recovery.Therefore,In order to solve this problem,a downhole full-hole vortex tool was designed.Solidworks was applied to establish three-dimensional model and established simplified model using into Ansys for meshing,then finished the simulation in fluent flow field compare with the existing vortex tools.The results showed that the effect of the new full-hole vortex tool was better than that of the existing vortex tools,whose average liquid carrying rate increased by 2.06 times compared with the existing vortex tools,the carrying capacity was stronger.In addition,the average pressure drop was reduced by 20.336%and the hydraulic loss was smaller relative to the existing vortex tools.

关 键 词：排水采气 满眼 涡流工具 结构设计 数值模拟 排液效果 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]