| QFGZ型潜孔锤反循环跟管钻头的研制 |
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| 引用本文： | 郑治川,殷琨,王清岩,彭枧明,苏继军.QFGZ型潜孔锤反循环跟管钻头的研制[J].吉林大学学报(地球科学版),2007,37(5):1052-1054. |
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| 作者姓名： | 郑治川 殷琨 王清岩 彭枧明 苏继军 |
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| 作者单位： | 吉林大学 建设工程学院，长春 130026 |
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| 基金项目： | 中国地质调查局项目(200120170130) |
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| 摘 要： | 为实现在复杂地层用同步跟管钻进工艺钻凿直径较大的桩孔和水井，设计了一种气动潜孔锤反循环跟管钻进钻头。介绍了该钻头的结构组成、工作原理和设计特点。与常规设计相比，该新型钻头流道设计可以增强排渣效果，保持孔底干净，减少重复破碎，提高钻进效率；边齿数量较多，耐磨损能力强，有利于提高使用寿命。
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| 关 键 词： | 跟管钻进 反循环 排渣通道 活瓣 |
| 文章编号： | 1671-5888（2007）05-1052-03 |
| 收稿时间： | 2006-11-15 |
| 修稿时间： | 2006-11-15 |
Development of QFGZ Type Bit for Simultaneous Casing While Reverse Circulation Drilling with DTH Air Hammer |
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| ZHENG Zhi-chuan,YIN Kun,WANG Qing-yan,PENG Jian-ming,SU Ji-jun.Development of QFGZ Type Bit for Simultaneous Casing While Reverse Circulation Drilling with DTH Air Hammer[J].Journal of Jilin Unviersity:Earth Science Edition,2007,37(5):1052-1054. |
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| Authors: | ZHENG Zhi-chuan YIN Kun WANG Qing-yan PENG Jian-ming SU Ji-jun |
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| Institution: | College of Construction Engineering, Jilin University，Changchun 130026，China |
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| Abstract: | In order to implement simultaneous casing while drilling of larger diameter pile holes and water wells in complex strata,a new type of bit for simultaneous casing while reverse circulation drilling with DTH air hammer was developed.Its makeup,working principle and features of design are presented.Compared with conventional design,the new type reverse circulation bit for casing while drilling has several advantages.Novel passage design can improve the effectiveness of cuttings removal,result in cleaner hole,reduce fragmentation repeat,and speedup penetration.More peripheral carbon-tungsten teeth would improve the abrasion resistance and service life of the bit. |
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| Keywords: | simultaneous casing while drilling reverse circulation passage for cuttings removal pilot bit |
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