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中国地调局探矿工艺研究所承担的地质调查项目“套管钻进技术研究”不久前在四川省核工业地质局若尔盖矿区开展了生产试验,试验圆满顺利完成,并取得显著的效果。若尔盖矿区ZK3-1钻孔位于海拔3900m的高原,为砂岩、板岩、炭质板岩和断层泥频繁交替地层,因为经常发生孔漏、孔垮、孔斜、断钻和埋钻等事故,被钻探工程师称为“五毒俱全”的复杂地层,在这种
Geological survey project undertaken by China Bureau of Prospecting Technology Research Institute “Casing Drilling Technology ” Not long ago in Sichuan Nuclear Geological Bureau Ruoergai mining area to carry out the production test, the test successfully completed successfully and achieved remarkable results. ZK3-1 borehole in Zoige Mining Area is located at a plateau of 3900m above sea level and is frequently alternated with sandstone, slate, carbonaceous slate and fault mud. Due to the frequent occurrence of hole leakage, hole collapse, hole slash, broken drill and burial, Drilled engineers called this “complex” of the “all sorts of poison” in this