基于有限元分析的煤矿井下新型弧角型聚晶金刚石复合片钻头优化设计

doi:10.13229/j.cnki.jdxbgxb201706043

吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (6): 1991-1998.doi: 10.13229/j.cnki.jdxbgxb201706043

• 论文 • 上一篇

基于有限元分析的煤矿井下新型弧角型聚晶金刚石复合片钻头优化设计

孙荣军^{1, 2}, 谷拴成¹, 居培², 高科³

1.西安科技大学建筑与工程学院,西安 710054;
2.中国煤炭科工集团西安研究院有限公司,西安 710077;
3.吉林大学建筑与工程学院,长春 130026

收稿日期:2017-03-10 出版日期:2017-11-20 发布日期:2017-11-20
通讯作者: 高科(1977-),男,副教授,博士.研究方向:超硬材料及地质,石油钻头.E-mail:gaokenm@jlu.edu.cn
作者简介:孙荣军(1977-),男,副研究员,博士.研究方向:煤矿井下钻探技术与装备研发推广.E-mail:sunrongjun@cctegxian.com
基金资助:
“十三五”国家科技重大专项项目(2016ZX05045-003); 陕西省2014年科技统筹创新工程计划项目(2014KTCL03-14)

Optimal design of new arc angle PDC drill bit for coal mining based on finite element method

SUN Rong-jun^{1, 2}, GU Shuan-cheng¹, JU Pei², GAO Ke³

1.Faculty of Architecture and Civil Engineering, Xi'an University of Science & Technology, Xi'an 710054, China;
2.Xi'an Research Institute, China Coal Technology and Engineering Group Corp, Xi'an 710077, China;
3.College of Construction Engineering, Jilin University, Changchun 130026, China

Received:2017-03-10 Online:2017-11-20 Published:2017-11-20

摘要/Abstract

摘要： 为了提高煤矿井下硬地层的钻进效率,借鉴石油钻头的设计和加工理念,提出了一种适用于煤矿井下硬岩钻进的新型弧角型PDC钻头的设计思路。采用有限元数值模拟方法,分别对直径为113 mm的弧角型聚晶金刚石复合片(PDC)钻头的切削结构和水力结构进行优化设计,得出:当采用内锥角为130°、外锥圆弧半径为20 mm的冠部形状,切削齿切削角度为-15°、侧转角为4°~6°,刀翼采用直刀翼的钻头切削结构时,破岩效果最佳;喷嘴喷射角为22°~30°、方位角的设计靠近切削齿的工作面时的钻头水力结构,能够满足岩屑的有效运移。基于此,试制了直径为113 mm的弧角型PDC钻头,并进行现场试验,结果表明:弧角型PDC钻头的平均寿命为626 m,平均钻进时效为25 m/h,与工区现用普通内凹型钻头相比,寿命提高了4倍,钻进效率提高了1倍,说明本文设计的弧角型PDC钻头能够代替普通内凹钻头应用于硬地层钻进,可同时达到提高钻进效率和降低施工成本的目的。

关键词: 钻井工程, 硬地层, 弧角型PDC钻头, 有限元分析, 切削结构, 水力结构

Abstract: In order to improve the efficiency of hard formation drilling of coal mine, a design concept of new arc angle Polycrystalline Diamond Compact (PDC) drill bit is put forward by referring the design and processing concept of oil PDC bit. Taking Ø 113 mm arc angle PDC drill bit for example, the cutting structure and hydraulic structure of the PDC drill bit are designed using Finite Element Method (FEM). Simulation results show that, when the crown shape with inner cone angle 130° and outer taper arc radius 20 mm, the cutters with cutting angle -15° and inside angle 4°~ 6°, and using straight blade, the rock breaking efficiency of arc angle PDC drill bit is the best. In the same time, when the nozzle spray angle 22°~ 30°, and the azimuth angle working face near the cutter, the migration of cutting is the best. Based on the above research, ?113 mm arc angle PDC drill bit was produced. Field test shows that, the average bit life and drilling efficiency of the drill bit are 626 m and 25 m/h, respectively, which are increased by 4 times and one times compared with the ordinary concave PDC drill bit. Therefore, in the hard formation drilling process, the arc angle PDC drill bit can be used to improve drilling efficiency and reduce drilling cost.

Key words: drilling engineering, hard formation, arc angle polycrystalline diamond compact bit(PDC) drill, finite element methods(FEM), cutting structure, hydraulic structure

中图分类号:

TE921

孙荣军, 谷拴成, 居培, 高科. 基于有限元分析的煤矿井下新型弧角型聚晶金刚石复合片钻头优化设计[J]. 吉林大学学报(工学版), 2017, 47(6): 1991-1998.

SUN Rong-jun, GU Shuan-cheng, JU Pei, GAO Ke. Optimal design of new arc angle PDC drill bit for coal mining based on finite element method[J]. 吉林大学学报(工学版), 2017, 47(6): 1991-1998.

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基于有限元分析的煤矿井下新型弧角型聚晶金刚石复合片钻头优化设计

Optimal design of new arc angle PDC drill bit for coal mining based on finite element method

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