钻探工程2024，Vol.51Issue(4)：46-53,8.DOI:10.12143/j.ztgc.2024.04.007
耐高温电镀镍锰合金胎体金刚石钻头的钻进性能研究
Study on drilling performance of heat-resisting electroplated diamond bit with Ni-Mn alloy matrix
摘要
Abstract
The complex drilling conditions of deep drilling put forward higher requirements for the performance of impregnated diamond bits.To improve the application range of electroplated diamond bits,the effects of MnCl2 and butynediol ethoxylate(BEO)on the surface morphology,microhardness,and thermal stability of the nickel base coating were studied.The drilling performance of pure Ni matrix diamond bit,Ni-Mn matrix diamond bit,and Ni-Mn matrix diamond bit with BEO as an additive after annealing at 300℃for 1 hr was compared.The results show that the microhardness of pure Ni decreases significantly to 300HV after annealing at 300℃for 1 hr,and the wear resistance of the annealed diamond bit with this matrix is too low,which leads to premature diamond shedding and a short service life to 2.94m.Both Ni-Mn coating and Ni-Mn coating with BEO added have good thermal stability,and the hardness increases to 640HV and 693HV respectively after annealing at 300℃for 1hr.Ni-Mn matrix diamond bit has both suitable drilling life and drilling efficiency after annealing,and the bit life can reach 4.67m.However,the annealed Ni-Mn matrix diamond bit with BEO as an additive fails due to the matrix's high microhardness.关键词
孕镶金刚石钻头/电镀/镍锰镀层/热稳定性/深部钻探Key words
impregnated diamond bit/electroplating/Ni-Mn electrodeposit/thermal stability/deep drilling分类
地质学引用本文复制引用
杨雪嘉,韦秀洁,潘秉锁..耐高温电镀镍锰合金胎体金刚石钻头的钻进性能研究[J].钻探工程,2024,51(4):46-53,8.基金项目
国家重点研发项目(编号:2022YFB3706604) （编号:2022YFB3706604）
