潜孔钻头研究现状及展望  

The Research Status and Expectation of DTH Drill Bit

作　　者：冯一璟[1] 张来斌[1] 梁伟[1] 杨帆[2] 邓嵘[3] 冯定[4] 

机构地区：[1]中国石油大学(北京)机械与储运工程学院,北京102249 [2]中国石油大学(北京)地球科学学院,北京102249 [3]西南石油大学机电工程学院,四川成都610500 [4]长江大学机械工程学院,湖北荆州434023

出　　处：《长江大学学报（自科版）（上旬）》2015年第9期38-41,4,共4页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

基　　金：国家自然科学基金项目(51275057);湖北省自然科学基金创新群体项目(2012FFA033);高等学校博士学科点科研基金项目(20124220110003)

摘　　要：在调研国内外研究现状的基础上,从潜孔钻头的工作原理、潜孔钻头的结构、潜孔钻头的静力学研究、潜孔钻头的计算机仿真研究和潜孔钻头的材料研究几个方面阐述了国内外研究学者对潜孔钻头的研究情况。在现有研究现状的基础上,通过现场调研潜孔钻头在服役过程存在易断裂、掉齿、磨齿失效的问题,使用大型软件CAD/CAE/CFD可研究钻头在实时动态钻井过程钻头牙齿的受力情况、钻头的破岩机理、钻头结构参数及钻进过程流场特性,优化设计出满足空气锤钻井配套的高效破岩、长寿命的潜孔钻头。该研究为提高潜孔钻头使用寿命和提高充气锤钻井时效奠定了理论基础。In allusion to the problem of easy fracturing,tooth lose and tooth failure.Based on the internal and external research status,the internal and external research situations of DTH bit are elaborated from the working principle,the structure,static and dynamic study,the computer simulation and the materials of DTH bits.On the basis of the existed research situation,the problem of DTH bits in the service process is investigated in oilfields.large CAD/CAE/CFD softwares are used to study real-time dynamic force in the drilling process of the drill bits' teeth,their rock breaking mechanism,structure parameters of bit and flow field characteristics in drilling.In view of the existing problems of DTH bits,they are also used to optimize the design of high rock breaking efficiency,long life DTH bits to match the air hammer drilling.This study lays a theoretical foundation for improving the DTH bit service life and improving the efficiency of air hammer drilling.

关 键 词：潜孔钻头 结构设计 力学分析 研究现状 

分 类 号：P634.4[天文地球—地质矿产勘探]