QFGZ型潜孔锤反循环跟管钻头的研制

• 地球物理·勘查技术 • 上一篇

QFGZ型潜孔锤反循环跟管钻头的研制

郑治川，殷琨，王清岩，彭枧明，苏继军

吉林大学建设工程学院，长春 130026

收稿日期:2006-11-15 修回日期:1900-01-01 出版日期:2007-09-26 发布日期:2007-09-26
通讯作者: 郑治川

Development of QFGZ Type Bit for Simultaneous Casing While Reverse Circulation Drilling with DTH Air Hammer

ZHENG Zhi-chuan，YIN Kun，WANG Qing-yan，PENG Jian-ming，SU Ji-jun

College of Construction Engineering, Jilin University，Changchun 130026，China

Received:2006-11-15 Revised:1900-01-01 Online:2007-09-26 Published:2007-09-26
Contact: ZHENG Zhi-chuan

摘要/Abstract

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。

关键词: 跟管钻进, 反循环, 排渣通道, 活瓣

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.

Key words: simultaneous casing while drilling, reverse circulation, passage for cuttings removal, pilot bit

中图分类号:

P634.4

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]. J4, 2007, 37(5): 1052-1054.

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]. J4, 2007, 37(5): 1052-1054.

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