硬脆性辅料对孕镶金刚石钻头钻进性能的影响机制  

Influence mechanism of hard brittle abrasive on the drilling performance of impregnated diamond bit

作　　者：王佳亮 韦文杰 张绍和[2,3] 彭奋飞[1] WANG Jialiang;WEI Wenjie;ZHANG Shaohe;PENG Fenfei(National Local Joint Engineering Laboratory of Marine Mineral Resources Exploration Equipment and Safety Technology,Hunan University of Science and Technology,Xiangtan 411201,China;School of Geosciences and Info-Physics,Central South University,Changsha 410083,China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University),Ministry of Education,Changsha 410083,China)

机构地区：[1]湖南科技大学海洋矿产资源探采装备与安全技术国家地方联合工程实验室,湖南湘潭411201 [2]中南大学地球科学与信息物理学院,湖南长沙410083 [3]中南大学有色金属成矿预测与地质环境监测教育部重点实验室,湖南长沙410083

出　　处：《煤田地质与勘探》2019年第1期200-205,210,共7页Coal Geology & Exploration

基　　金：国家自然科学基金项目(41702390);湖南省自然科学基金项目(2018JJ3173);湖南省教育厅基金项目(17C0634)~~

摘　　要：以改善金刚石钻头的使用性能为目的,向钻头胎体中添加不同量的碳化硅颗粒,并采用室内钻进试验的方法,研究碳化硅及其添加量对钻头性能的影响机制。结果表明:与常规钻头相比,添加质量分数为5.5%的碳化硅颗粒,其钻进效率提高了55.14%;胎体中的碳化硅颗粒有利于改善钻头胎体的微观磨损形貌;残留于孔底的碳化硅颗粒有利于改善冲洗液对胎体的冲蚀效果,以及提高对胎体中单颗粒金刚石的修锐效果。In order to improve the performance of diamond bit,impregnated diamond bit was prepared by adding different mass of hard brittle abrasive into matrix and drilling performance was tested by drilling experiments.The effect of hard brittle abrasive on drilling performance was studied.The results show that adding 5.5%SiC particle had better effect and the drilling efficiency increased by 55.14%compare with common bit.The hard brittle abrasive in the matrix can improving the microstructure of bit.The hard brittle abrasive left in the down hole can improve the erosion performance of washing fluid to matrix and increase the truing and sharpening effect on the single diamond.

关 键 词：孕镶金刚石钻头 硬脆性辅料 钻进性能 碎岩机理 

分 类 号：P634.4[天文地球—地质矿产勘探]