| 不同喷嘴组合超高压射流破岩钻进特性分析 |
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| 引用本文： | 徐义,刘永旺,徐依吉,张玉英.不同喷嘴组合超高压射流破岩钻进特性分析[J].计算物理,2011,28(5):686-692. |
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| 作者姓名： | 徐义 刘永旺 徐依吉 张玉英 |
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| 作者单位： | 1. 中国石油集团钻井工程技术研究院,北京,100083
2. 中国石油大学(华东)石油工程学院,山东青岛,266555 |
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| 基金项目： | 中国石油集团公司重点研究课题(05A20301)资助项目 |
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| 摘 要： | 本文对不同喷嘴组合方式时超高压射流井底流场特性进行数值模拟.根据得出的井底流场的速度矢量图和井底压力分布图,分析超高压钻头喷嘴组合形式对流场结构及钻进效果的影响.结果表明,三个垂直的边喷嘴组合破岩效率较高,但清洗井底效果不佳,冲蚀井壁严重；中心加一个喷嘴可解决清洗井底及冲蚀井壁的问题,但要求高压流体排量增加；两个垂直边...
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| 关 键 词： | 机械钻速 超高压射流 喷嘴组合 数值模拟 |
Rock Breaking Characteristics of Ultra-high Pressure Jet with Nozzle Combinations |
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| XU Yi,LIU Yongwang,XU Yiji,ZHANG Yuying.Rock Breaking Characteristics of Ultra-high Pressure Jet with Nozzle Combinations[J].Chinese Journal of Computational Physics,2011,28(5):686-692. |
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| Authors: | XU Yi LIU Yongwang XU Yiji ZHANG Yuying |
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| Institution: | XU Yi,LIU Yongwang2,XU Yiji2,ZHANG Yuying2(1.CNPC Drilling Research Institute,Beijing 100083,China,2.College of Petroleum Engineering,China University of Petroleum,Dongying 257061,China) |
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| Abstract: | To maximize utilization of ultra high pressure jet energy,ultra high pressure jet flow field is studied with numerical simulation on different nozzle combinations.According to bottom flow field velocity vector and bottom hole pressure distribution,flow structure and drilling of nozzle combinations are analysed.A combination of three vertical edge nozzles has high efficiency on rock but is ineffective in cleaning the bottom and it results in wall erosion severely.Center plus a nozzle can clean the bottom and... |
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| Keywords: | rate of penetration ultra-high pressure jet nozzles combination numerical simulation |
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