CAJ | 학술논문

嵩县槐树坪金矿区域地质构造复杂，岩石破碎，部分岩层高岭土化，钻探施工中漏失、垮塌严重，经常发生钻孔缩径、卡钻、内管总成打捞困难等孔内事故，严重影响了钻进效率和钻孔质量。对该矿区施工所遇到的困难和需要重点解决的问题进行了分析，通过试验研究，确定采用聚合物低固相泥浆体系，并根据该矿区地层特点，确定了在不同条件下聚合物低固相泥浆的配方、配制方法、维护管理及护壁堵漏方法等，逐步在该矿区全面推广，大幅度减少了孔内事故、提高了纯钻效率和台月效率，有效地促进了该矿区的勘探进度，缩短了勘探周期，取得了显著的经济效益和社会效益。
숭현괴수평금광구역지질구조복잡，암석파쇄，부분암층고령토화，찬탐시공중루실、과탑엄중，경상발생찬공축경、잡찬、내관총성타로곤난등공내사고，엄중영향료찬진효솔화찬공질량。대해광구시공소우도적곤난화수요중점해결적문제진행료분석，통과시험연구，학정채용취합물저고상니장체계，병근거해광구지층특점，학정료재불동조건하취합물저고상니장적배방、배제방법、유호관리급호벽도루방법등，축보재해광구전면추엄，대폭도감소료공내사고、제고료순찬효솔화태월효솔，유효지촉진료해광구적감탐진도，축단료감탐주기，취득료현저적경제효익화사회효익。
Because of the complex regional tectonics with broken rocks, kaolinization in part of rocks, serious circulation loss and collapse in Huaishuping large gold mine, the downhole accidents of hole diameter shrinkage, drill pipe sticking and difficult inner tube assembly fishing often occurred, which seriously affected the drilling efficiency and drilling quality. The analysis on the above difficulties and problems are made, and by the experimental study, the low solids polymer mud system is adopted.According to the characteristics of the strata, the formula of low solid phase polymer mud, preparation method, maintenance and wall protection&plugging under different conditions are determined and gradually comprehensive promoted in this mining area.The hole accidents are greatly reduced with the efficiencies of penetration and meterage per rig-month improved, which also promotes the mining exploration progress, shortens the cycle of exploration and achieves re-markable economic and social benefits.