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“钢粒钻进”是目前我国钻探生产中提高坚硬岩层钻进效率的最主要方法。1957年推广使用钢粒钻进以来,操作水平逐年提高,在同极岩层比铁砂钻进效率提高1～1.5倍。1961年起,我公司开始加强了钢粒钻进技术的系统科研工作。1963年至1964年末,我们与中南矿冶学院共同以中南矿冶学院钻探试验室及鞍山冶金地质勘探公司402队为基地,共同进行了三次室内试验和一次生产试验,对钢粒钻进工作过
“Drilling into the grain” is the most important method to improve the drilling efficiency of hard rock formations in our country nowadays. Since the popularization of steel grain drilling in 1957, the operation level has been increased year by year, and the drilling efficiency of iron sand in the same polar rock layer has increased by 1 to 1.5 times. Since 1961, our company began to strengthen the system of scientific research of steel drilling technology. From 1963 to the end of 1964, we worked with Central South University of Mining and Metallurgy, together with the Drilling Laboratory of Central South University of Mining and Metallurgy and the 402 Team of Anshan Metallurgical Geological Exploration Company, jointly conducted three indoor tests and one production test,