| 喷嘴孔径对PDC钻头井底流场影响的研究 |
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| 引用本文： | 杨丽,陈康民.喷嘴孔径对PDC钻头井底流场影响的研究[J].机械工程学报,2005,41(9):171-174. |
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| 作者姓名： | 杨丽 陈康民 |
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| 作者单位： | 上海理工大学动力学院 |
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| 基金项目： | 上海市科委高新技术(032912022)
上海市经委高新技术(2870)资助项目。 |
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| 摘 要： | PDC钻头在实钻过程中井底流场非常复杂，而优化其水力学参数是提高钻头钻井能力的有效手段。根据实际钻头结构，建立了不同孔径的四喷嘴PDC钻头井底流场模型并对之进行了数值模拟，分析了流场的总体特点，得出了在相同出口射流速度和相同流量条件下喷嘴孔径对PDC钻头井底流场的各种影响，并通过试验进行了验证，为PDC钻头的水力学设计提供了一定的指导。
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| 关 键 词： | PDC钻头 流场 喷嘴 数值分析 |
| 修稿时间： | 2004年11月9日 |
RESEARCHE ON THE INFLUENCE OF NOZZLES WITH DIFFERENT DIAMETERS ON FLOW FIELD OF PDC BITS |
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| Yang Li,Chen Kangmin.RESEARCHE ON THE INFLUENCE OF NOZZLES WITH DIFFERENT DIAMETERS ON FLOW FIELD OF PDC BITS[J].Chinese Journal of Mechanical Engineering,2005,41(9):171-174. |
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| Authors: | Yang Li Chen Kangmin |
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| Affiliation: | College of Power Engineering, University of Shanghai for Science and Technology |
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| Abstract: | The flow field of PDC bits is very complicated during drilling process, while optimizing its hydraulics parameters is an effective method to improve its drilling performance. According to the actual structure of the bits, flow field models for the PDC bits which have four nozzles with different diameters are established and then numerically simulated. The general features of the flow field are analyzed and the influences of nozzles with different diameters on flow field of PDC bits under the conditions of same outlet velocity and same flux are obtained, thus provide some guidance for hydraulic design of PDC bits. |
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| Keywords: | PDC bits Numerical analysis Nozzle Flow field |
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