多级固井地锚作业喷嘴设计研究.pdfVIP

·机械研究与应用 · 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 设计与制造 2015年第5期 (第28卷,总第139期) doi:10.16576/ j.cnki.1007-4414.2015.05.036 多级固井地锚作业喷嘴设计研究* 陈摇 治,张摇 强,肖苏宸 (长江大学机械工程学院,湖北荆州摇 434023) 摘摇 要:对海上稠油热采技术中单级地锚锚固困难、预拉力不足等问题,采用多级固井地锚组合施工工艺,从而提高 地锚锚固性能。 借助Fluent仿真软件对三级地锚内部液流流场数值模拟,从理论和数值模拟两方面,设计地锚憋压喷 嘴结构尺寸,同时探讨三级地锚地面、井下试验方案。 分析结果表明,三级地锚依次采用孔径准65 mm、准60 mm、准57 mm的圆锥形喷嘴时,满足钻井施工要求,增加了地锚锚固性能。 研究结果对于地锚喷嘴设计和现场施工循环排量控 制具有指导作用。 关键词:地锚;喷嘴;仿真模拟;压差;试验研究 中图分类号:TE925摇 摇 摇 摇 摇 摇 文献标志码:A摇 摇 摇 摇 摇 摇 文章编号:1007-4414(2015)05-0107-03 Design and Analysis of the Operation Nozzle in Multi-level Cementing Anchor CHEN摇 Zhi,ZHANG摇 Qiang,XIAO Su-chen (College of Mechanical Engineering,Yangtze University,JingzhouHubei摇 434023,China) Abstract:Aiming at problems such as difficult anchoring of single-stage anchor and inadequate pre-tension and other issues of the offshore heavyoilthermalrecoverytechnology,themulti-stagecementinganchorcombinationconstructiontechnology is applied to raise the anchoring performance of ground anchor. Numerical simulation to the interior flow field of thetertiary an鄄 chor is conductedwith the Fluent simulation software,from aspects of thetheoretical and numerical simulation,structure size of the pressure-nozzle in groundanchorisdesigned,andtestingprogramsongroundandundergroundarealsodiscussed. The results show that it could meet the drilling requirementswhen the pores size of conical nozzles in thesethree anchors are suc鄄 cessively 准65mm,准60mm,准57mm,andtheanchoringperformancecouldalsobeincreased. Theresultshaveguidingfunction for the design of anchor nozzle and the cycle displacement control in the site construction. Key words:ground anchor;nozzle;analogue simulation;differential pressure;expe