| 自激振荡脉冲射流提高PDC钻头机械钻速实践 |
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| 引用本文： | 李天明,李大佛,雷艳,刘红旗. 自激振荡脉冲射流提高PDC钻头机械钻速实践[J]. 探矿工程(岩土钻掘工程), 2008, 35(11): 74-77 |
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| 作者姓名： | 李天明 李大佛 雷艳 刘红旗 |
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| 作者单位： | 中国地质大学长江钻头公司,湖北,武汉,430074 |
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| 摘 要： | 利用自激振荡脉冲射流原理,设计了脉冲射流喷嘴,应用于PDC石油钻头中,经过不同地域、不同地层、不同直径的实践应用表明,新型自激振荡脉冲射流PDC石油钻头与普通PDC钻头相比,机械钻速提高10%~30%;钻头寿命大幅度提高;破碎岩屑颗粒粒径增大2~4倍,扩大了勘探油井PDC钻头使用范围;有效地防止了钻头"泥包"等。
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| 关 键 词： | 自激振荡 脉冲射流 PDC钻头 机械钻速 |
Application of Self-excited Oscillation Pulsed Jet in Improving the Penetration Rate of PDC Drill Bits |
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| LI Tian-ming,LI Da-fo,LEI Yan and LIU Hong-qi. Application of Self-excited Oscillation Pulsed Jet in Improving the Penetration Rate of PDC Drill Bits[J]. Exploration Engineering （Rock & Soil Drilling and Tunneling）, 2008, 35(11): 74-77 |
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| Authors: | LI Tian-ming LI Da-fo LEI Yan LIU Hong-qi |
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| Affiliation: | Changjiang bit company, China University of Geosciences;Changjiang bit company, China University of Geosciences;Changjiang bit company, China University of Geosciences;Changjiang bit company, China University of Geosciences |
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| Abstract: | The pulsation-jet nozzle was designed according to the principle of self-excited oscillation pulsed jet,and was applied in PDC oil drilling head.The application in different area,formation and diameter showed that compared with ordinary PDC bit,penetration rate of self-excited oscillation pulsed jet PDC oil drilling head increased 10%-30%,the service life and application range was largely prolonged and enlarged,and the size of rock debris was increased by 2-4 times without any auxiliary equipment. |
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| Keywords: | self-excited oscillation pulsed jet PDC drill bit penetration rate |
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