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近两年来,有的地质队反映,用70～100目孕镶人造金刚石钻头钻进花岗岩、硅化板岩、石英砂岩等地层,以皂化油、松香酸钠或癸脂钠皂作冲洗液、连续用两个班就成汤浆,岩粉不易沉淀,孔内钻具回转阻力大,高转速开不上去.因此每隔1～2个班要换一次冲洗液,大大增加了润滑剂的消耗量,又影响了纯钻进时间.针对这一情况,我们在湖南305队一矿区开展了研究工作.该区地层为完整中细粒黑云母二长花岗岩,可钻性6～9级,少部分10级;水质矿化度低,含钙、镁离子30ppm.
In the past two years, some geological teams have reported that 70 to 100 mesh pregnant diamond-encrusted synthetic diamond bits are used to drill into granite, silicified slate, quartz sandstone and other formations, with saponified oil, sodium rosinate or sodium decane as washing liquid, With two classes into a soup, rock powder is not easy to sediment, drill hole drilling hole resistance, high speed can not go up, so every 1 to 2 classes to change the rinse solution, greatly increased the consumption of lubricants , But also affected the time of pure drilling.In response to this situation, we conducted a research work in the first coal mine of Unit 305 in Hunan Province, which is a complete medium-fine biotite monzogranite with drillability of 6 to 9, 10; water quality is low, calcium, magnesium ions 30ppm.