涡流工具携液效率影响因素及适应条件分析  

Analysis of Factors Affecting Fluid-Carrying Efficiency and Application Condition of Vortex Tools

作　　者：谢双喜 姚亚 王亚慧 苏作飞 王东 XIE Shuangxi;YAO Ya;WANG Yahui;SU Zuofei;WANG Dong(CNOOC Energy Technology & Services-Engineering Technology Company, Tianjin Tanggu, 300456, China;The University of Tulsa, TulsaOklahoma, 74104;College of Petroleum Engineering, China University of Petroleum(East China), Shandong Qingdao, 266580, China)

机构地区：[1]中海油能源发展工程技术公司,天津塘沽300456 [2]The University of Tulsa, Tulsa Oklahoma, 74104 [3]中国石油大港油田分公司第五采油厂,天津滨海新区300280

出　　处：《数码设计》2018年第4期167-172,共6页Peak Data Science

基　　金：中海油能源发展股份有限公司科研项目“涡流工具携液影响因素分析”(GC2014ZC2916)资助。

摘　　要：针对目前涡流工具适用条件和涡流携液效率影响因素认识不清,工具结构参数优选主要依据经验,影响使用效果等问题,运用AutoCAD和Fluent流体模拟软件,建立涡流工具气液两相流场模型,分析涡流工具结构参数和井筒气液状况对涡流携液效率的影响。研究结果表明,涡流工具的顶角对携液效率影响很小,使用时满足打捞操作即可;槽宽为60mm时,气液分离效果最好,气体轴向速度最大,井筒压力损失较小,携液效率较高;减小槽深或者增大导程,气液分离效果增强,气体轴向速度增大,井筒压力损失增大;气水比超过200m^3/m^3后,气体轴向速度和压力损失减小缓慢,携液效率趋于稳定;最好保持入口速度小于6m/s,入口速度过大时气体轴向速度增加缓慢,同时压力损失迅速增大。研究结果为现场涡流工具结构参数优选、适应条件确定和排液效果的提高提供理论依据。At present, there is still no clear understanding of applicable conditions of vortex tools and factors affecting fluid-carrying efficiency of vortex flow, and structural parameters optimization is mainly based on experience, which can weaken the application effect of vortex tools. In order to analyze the influence of structure parameters and gas-liquid condition on fluid-carrying efficiency of vortex flow, the Fluent and AutoCAD software are applied to establish two-phase flow models. The research shows that apex angle has little effect on fluid-carrying efficiency and only needs to be processed to meet fishing operation requirements. Fluid-carrying efficiency is higher with 60mm trough width, while best gas-liquid separation effect, maximum gas axial velocity and lower pressure loss can be obtained. With the decrease of trough depth or increase of lead, gas-liquid separation effect is enhanced, and axial gas velocity and pressure loss become higher. When gas-water ratio is higher than 200m3/m3, axial gas velocity and pressure loss decrease gradually, and fluid-carrying efficiency tends to be stable. It’s advisable to maintain inlet velocity lower than 6m/s, since too high velocity can lead to slow axial velocity increase and dramatic increase of pressure loss. The results provide theoretical basis for optimization of structure parameters, determination of application condition and improvement of drainage efficiency of vortex tools.

关 键 词：气井排液 涡流工具 携液效率 结构参数 气液状况 适应条件 数值模拟 

分 类 号：TE37[石油与天然气工程—油气田开发工程]