基于破碎单位体积岩石能耗量设计坚硬研磨性岩石用钻头方法的研究

Low Energy Consumption for Fragmentizing Rocks Is An Important Criterion for Designing Drill Bits in Hard and Abrasive Formations

摘要:

深孔钻进时常常遇到坚硬岩石和研磨性岩石，在这种岩石中钻进时钻探技术指标不甚理想。建议以破碎单位体积岩石能耗低的标准来设计和研制孕镶金刚石钻头。按此标准设计的胎体扇形块上带有凸出和低洼切削齿的梳状金刚石钻头，在实验台上进行的试验，试验结果表明，与常规平底胎体金刚石钻头比较，破碎单位体积岩石能耗量降低了，机械钻速提高了，胎体单位进尺磨损量降低了。建议对这种新型钻头给以充分注意并进行进一步研究。

Abstract:

In drilling deep holes hard and abrasive formations are found often. When drilling in these formations the results of drilling are not satisfied with. It is recommended to design new type drill bits according to the criterion about low energy consumption for fragmentizing rocks. The results of lab experiments show， that the bits with convex and concave cutting edges in matrix sectors，designed and manufactured according to the criterion， are better， than bits， manufactured according to conventional flat face matrix in penetrate rate， abrasiveness of the matrix and energy consumption for fragmenting rocks. Therefore， the new type diamond impregnated drill bits should be paid our special attention to.