| 冲击回转挤压成孔方法及凸轮型挤压钻头 |
| 修订日期：1998-08-07 点此下载全文 |
| 引用本文：郑治川,邓洪超,卢文阁.冲击回转挤压成孔方法及凸轮型挤压钻头[J].钻探工程,1999,(4):8-10.. Percussion-rotary-extrudingDrilling Method and the Cam Extruding Bit[J]. Drilling Engineering, 1999,(4):8-10. |
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| 郑治川 邓洪超 卢文阁 |
| 长春市西民主大街６号 |
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| 中文摘要:在冲击回转挤压成孔的钻进中通常采用圆锥型的挤压钻头，这种钻头在松软地层中的钻进效率很高，但在高围压下的中、硬塑性地层中的钻进效率明显降低。针对这一问题，分析了地层因素对钻进效率的影响及其原因，针对圆锥型挤压钻头存在的问题，设计了凸轮型挤压钻头。并指出了冲击回转挤压成孔钻进方法的适用范围。 |
| 中文关键词:冲击回转,挤压成孔,凸轮,挤压钻头 |
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| Percussion-rotary-extrudingDrilling Method and the Cam Extruding Bit |
| Zheng Zhichuan Deng Hongchao Lu Wenge |
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| Abstract:The conic extruding bit usually be put into use when adopting percussionrotaryextruding drilling method to drill. This bit has very higher drilling efficiency than others in loose soil. But it's drilling efficiency would lower obviously in the middle and stiff plastic soil. To counter this problem, the writers analyzed the factors of soil that would effect drilling efficiency and the effecting reason. The shortcoming of the PRE bit have been find, and the cam PRE bit has been designed. The use range of the PRE drilling method be bind in this paper. |
| keywords:percussionrotation, extruding drill, cam, extruding bit, |
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