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云南省地矿局807队老厂分队过去长期使用当地劣质粘土造浆，因此孔内事故多，效率低。自从使用优质膨润土粉造浆以后，孔内事故大大减少，钻进效率提高，工人的劳动强度降低。现就915孔和1713孔可比性较强的孔段进行对比如下：915孔自672.75—900.50米完全使用当地劣质粘土泥浆，钻进227.15米；1713孔自775.20—984.44米完全使用山东高阳膨
Yunnan Bureau of Geology and Mineral Resources 807 team of old factory in the past long-term use of local inferior clay slurry, so the hole more accidents, low efficiency. Since the use of high-quality bentonite powder after the hole greatly reduced the accident, drilling efficiency increased, reducing the labor intensity of workers. Comparison is now made between 915 and 1713 holes, which are more comparable: 915 holes from 672.75-900.50 meters completely using local inferior clay mud, drilling 227.15 meters; 1713 holes from 775.20-984.44 meters full use of Shandong Yang bulging