| 井底岩屑磨料脉冲射流调制元件自激腔室的数值模拟研究 |
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| 引用本文： | 陈祎,沈忠厚,仲冠宇. 井底岩屑磨料脉冲射流调制元件自激腔室的数值模拟研究[J]. 钻采工艺, 2012, 35(2): 38-40,9 |
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| 作者姓名： | 陈祎 沈忠厚 仲冠宇 |
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| 作者单位： | 1. 中国石油大学石油工程学院 华东;中国石化西南石油局重庆钻井公司
2. 中国石油大学石油工程学院·华东 |
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| 基金项目： | 国家重大专项(2011ZX05060)部分研究成果 |
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| 摘 要： | 针对自激腔室的井底岩屑磨料脉冲射流调制问题,基于计算流体力学理论,建立了自激腔室的二维物理模型并进行了数值模拟计算.研究了自激腔室的流场特征,在此基础上,分析了其结构参数对进出口压力的影响规律.结果表明,自激腔室可以激生低压涡环,有利于岩屑的吸入和脉冲射流的形成.进出口压力随着上下喷嘴直径比的增大而增大,与腔长没有明显的线性关系.研究内容可以为井底岩屑磨料脉冲射流技术提供重要参考.
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| 关 键 词： | 井底岩屑磨料脉冲射流 κ-ε两方程 流场 |
NUMERICAL SIMULATION OF CUTTING ABRASIVE IMPULSE MODULATOR ELEMENT |
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| CHEN Yi,SHEN Zhonghou,and ZHONG Guanyu. NUMERICAL SIMULATION OF CUTTING ABRASIVE IMPULSE MODULATOR ELEMENT[J]. Drilling & Production Technology, 2012, 35(2): 38-40,9 |
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| Authors: | CHEN Yi SHEN Zhonghou and ZHONG Guanyu |
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| Affiliation: | 1(1. College of Petroleum Engineering, China University of Petroleum(Huadong); 2. Sinopec Southwest Petroleum Bureau Chongqing Drilling Company) |
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| Abstract: | The 2D physical model of self-excited cavity was established by the means of CFD centered on the modulation of cutting abrasive impulse jetting. Flow field character and effect of structure parameter on pressure difference between inlet and outlet were analyzed. The results showed: the self-excited cavity could induce vortex, which was useful for inhaling cutting and forming pulsing jet. The pressure difference between inlet and outlet became bigger with the ratio of up/down nozzles, but was not relevant to cavity length. The result of this analysis could provide good reference for cutting abrasive impulse jetting technology. |
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| Keywords: | cutting abrasive impulse jetting equation flow field |
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