钻探工程2024，Vol.51Issue(6)：85-90,6.DOI:10.12143/j.ztgc.2024.06.010
水平定向钻进坚硬地层孕镶金刚石钻头的研究与应用
Development and application of impregnated diamond bit for horizontal directional drilling in hard formation
摘要
Abstract
Aiming at the low efficiency of horizontal directional drilling in hard formation,the self-sharpness of the bit was improved by the hard brittleness of FeCoCu pre-alloy matrix and the hard silicon carbide particle to weaken the matrix.The layered structure design is used to alternate the high and low wear resistance layers along the radial direction of the bit.The thickness of low wear resistance and high wear resistance were designed to be 1.0～1.5mm and 2.5～3.5mm respectively,to realize simultaneous wear of high wear resistance layers and low wear resistance layers and improve drilling efficiency.The bits have been successfully applied to horizontal directional drilling in hard potassium feldspar granite formation,using the combination of FeCoCu pre-alloy matrix and stratified matrix structure,with the average ROP of 0.8～1.5m/h and the drilling life of 30～40m.Compared with the ordinary concentric sharp tooth bit,the ROP has been increased by about double,and the drilling life has been increased by more than 30%.关键词
水平定向钻进/坚硬地层/孕镶金刚石钻头/分层结构/FeCoCu预合金/机械钻速/工程勘察Key words
horizontal directional drilling/hard formation/impregnated diamond bit/layered structure/FeCoCu pre-alloy/rate of penetration/engineering investigation分类
天文与地球科学引用本文复制引用
胡立,李俊萍,唐治建..水平定向钻进坚硬地层孕镶金刚石钻头的研究与应用[J].钻探工程,2024,51(6):85-90,6.基金项目
中国地质调查局地质调查项目"地质矿产勘查技术方法升级与应用"(编号:DD20243535) （编号:DD20243535）
