摘要： 反循环钻头是职称论文发表价格中形成反循环的关键，反循环钻头的二级引射装置直接影响反循环效果。利用试验和计算流体动力学(CFD)方法对二级引射装置结构参数对钻头反循环效果的影响规律进行研究，探寻最优尺寸组合，为反循环钻头结构改进提供理论依据，进一步推广贯通式潜孔锤反循环连续取心（样）技术在复杂地层的应用。
关键词： 钻井技术；反循环； 钻头；内喷孔；正交试验

ZHU Lihong^1,*， HUANG Yong^2,

 

Abstract： The reverse circulation drilling bit is the key to the formation of the reverse circulation, the two stage ejector of the reverse circulation drill bit directly affect the reverse circulation effect. The influence of the structural parameters of the two stage ejector device is studied by using experimental and computational fluid dynamics (CFD) method, and the optimal size combination is explored.It is provided theoretical basis for improving the structure of reverse circulation bit, and to further promote the application of the continuous coring (sample) technology in complex formation.
Keywords： Drilling technology; reverse circulation; drill; inner nozzle; orthogonal test