| 磨料射流切割金属套管机理及计算公式 |
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| 引用本文： | 于鸿春,张永利.磨料射流切割金属套管机理及计算公式[J].辽宁工程技术大学学报(自然科学版),2007,26(6):850-852. |
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| 作者姓名： | 于鸿春 张永利 |
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| 作者单位： | 1. 中国石油大学,石油工程学院,山东,东营,257061
2. 辽宁工程技术大学,力学与工程学院,辽宁,阜新,123000 |
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| 基金项目： | 辽宁省博士启动基金资助项目（2001102097） |
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| 摘 要： | 研究和分析了磨料射流切割机理，由于实际工作中固体颗粒做占比例较小，把磨料两相射流假定为稀疏固液两相流，将固体颗粒假定为伪流体，其运动速度与流体运动速度相同。根据弹性力学的固体接触理论，建立了相应的数学模型，得出了磨料颗粒与材料相接触时的最大接触剪应力公式，从而计算出切割套管所需要的最大剪应力，最后通过实例计算，其结果与现场试验结果相吻合，为该技术不断发展及工艺参数选择提供了理论支撑。
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| 关 键 词： | 磨料射流 切割机理 数学模型 |
| 文章编号： | 1008-0562（2007）06-0850-03 |
| 收稿时间： | 2006-04-15 |
| 修稿时间： | 2006年4月15日 |
Mechanism of abrasive jet slotting and establishment of its mathematical model |
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| YU Hong-chun,ZHANG Yong-li.Mechanism of abrasive jet slotting and establishment of its mathematical model[J].Journal of Liaoning Technical University (Natural Science Edition),2007,26(6):850-852. |
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| Authors: | YU Hong-chun ZHANG Yong-li |
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| Abstract: | Abrasive jet is a jet formed by mixer of a small amount of abrasive particles and water. Oil well downhole abrasive jet slotting technology is a highly new technology for oil well production increase, injection increase of water injector and improving oilfield recovery. According to solid contacting theory of elasticity, mechanism of abrasive jet slotting is studied and correspondent mathematical model is established. And the maximum contacting shearing stress equation is obtained when abrasive granule has a shock with metal material. The computing result is consistent with the test result in situ, which provides theoretical support for continuous development of the technology and selection of technical parameters. |
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| Keywords: | abrasive jet slotting mechanism mathematical model |
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