坚硬地层NBS高效孕镶金刚石钻头的研究与应用

Study and Application of High Efficiency NBS Impregnated Bit for Hard Formation

摘要:

介绍了一种NBS高效孕镶金刚石钻头，该类型钻头通过向胎体配方引入一种NBS材料，该材料与胎体结合强度强，晶型锐利，室内微钻试验及野外试验结果显示，该类型钻头可大幅提高钻进中弱风化坚硬岩石的钻进效率，且钻头寿命较以往技术有很大提高。

Abstract:

A high efficiency NBS impregnated bit was introduced in this paper. NBS material was added in the bit matrix, which has a sharp crystal and good bond strength with the matrix. The micro-drilling experiments and the field drilling tests show that this NBS diamond bit can greatly improve ROP in medium-weakly weathered hard rocks drilling and the bit service life is also prolonged compared with ordinary diamond bits.