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勘探水泥用灰岩是建材地质的一项主要任务。为提高钻探效率，加快勘探速度，建材六○四队（北京建材局地质队）及四○二队（广东建材地质勘探队）分别于1976、1977年试用金刚石小口径钻进，1977年以后开始推广使用。一、六○四队1976年在蓟县灰岩勘探中采用改装高速XU—600型钻机，大（φ91毫米）、小（φ56毫米）两种口径同时进行钻探，取得了两种方法的对比资料。大口径钻进8个孔，进尺1172.65米，小口径钻进10个孔，进尺1376.05米，钻进地层主要为：中厚层灰岩及柱状叠层灰岩，含少量燧石或矽质结核。
Exploration of limestone for cement is a major task of building materials geology. In order to improve the drilling efficiency and speed up the exploration, building materials 604 (Beijing Building Materials Bureau Geological Team) and 402 (Guangdong Building Materials Geological Exploration Team) were drilled in 1976 and 1977 with small diameter diamonds and started after 1977 Promote use. One, six four four teams in 1976 in Jixian limestone exploration using modified high-speed XU-600 type drilling rig, large (φ91 mm), small (φ56 mm) two diameter drilling at the same time, obtained two methods of comparison. Large diameter drilling 8 holes, footage of 1172.65 meters, 10 holes into the small caliber, footage of 1376.05 meters, drilling into the formation mainly: thick limestone and columnar laminated limestone, with a small amount of chert or silicon nodules.