钻探工程2024，Vol.51Issue(6)：14-23,10.DOI:10.12143/j.ztgc.2024.06.002
偏心冲击回转钻进工艺试验研究及其所用钻头的开发
Experimental research on drilling parameters of eccentric percussion rotary drilling and development of the drill bit used for
摘要
Abstract
Percussion rotary drilling is an important method of drilling and widely used in geological exploration.Traditionally in percussion rotary drilling application of impact pulse is centric,but not eccentric.Russian experts have put award fragmentation of rock by application of eccentric impact pulse in order to improve the result of the fragmentation.That is a new concept and an innovation.The experimental research has been proved,that in percussion rotary drilling by eccentric impact pules in rock not only vertical normal stress are created,but also tangential shear stress created and it is beneficial to improve the result of rock fragmentation and rising of drilling rate.In drilling dolerite and marble at eccentricity E=1～2mm the mechanical drilling rate and bit penetration per revolution are increased substantially in comparison with E=0mm.Matching with the mentioned above the drill bit for eccentric percussion rotary drilling has been developed and the bit patent obtained,strengthening the result and role of the eccentric percussion rotary drilling further in geological exploration.It is suggested that further research on eccentric percussive rotary drilling should be carried out in China.关键词
冲击回转钻进/偏心冲击脉冲/偏心距/机械钻速/每转进尺/偏心冲击回转钻进用钻头Key words
percussion rotary drilling/eccentric impact pules/eccentricity/mechanical drilling rate/bit penetration per revolution/drill bit for eccentric percussion rotary drilling分类
地质学引用本文复制引用
汤凤林,赵荣欣,Нескоромных B.B.,李博,周欣,段隆臣,Чихоткин В.Ф...偏心冲击回转钻进工艺试验研究及其所用钻头的开发[J].钻探工程,2024,51(6):14-23,10.基金项目
国家自然科学基金面上项目"不同结构高压电脉冲钻头的破岩过程与预测模型研究"(编号:42272366) （编号:42272366）
