大宝山复杂钼矿地层钻孔堵漏技术研究与应用  

Research and Application of Sealing Technologies in Complex Molybdenum Stratum in Dabao Mountain

作　　者：孙平贺[1,2,3] 乌效鸣[1] 赵均文[4] 赵仁明[5] 

机构地区：[1]中国地质大学工程学院,武汉430074 [2]中国地质大学(武汉)岩土钻掘与防护教育部工程研究中心,武汉430074 [3]美国Arizona State University,AZ85282 [4]河北省地矿局第四地质大队,承德067000 [5]广东省地质勘查局705地质大队,韶关512023

出　　处：《地质与勘探》2010年第1期132-136,共5页Geology and Exploration

基　　金：中国.国家建设高水平大学公派研究生项目(20093012)资助项目;中国地质大学(武汉)研究生学术探索与创新基金(CU-GYJS0721)联合资助

摘　　要：钻孔漏失是钻进过程中经常碰到的问题。大宝山钼矿区地层条件复杂,多以软硬夹层和岩石裂隙为主,地下水丰富,局部漏失比较明显。为了解决该区域地层钻孔的漏失问题,笔者在分析地层及现场工艺条件后,提出并设计了脲醛树脂水泥球堵漏方案。经室内评价性实验,确定了以水泥、脲醛树脂、酒石酸等为主要原料的现场堵漏配方,该方案初凝和终凝时间比较短,操作过程比较简单,水泥球在酸性条件下能够保持自身的稳定,减少浸泡条件下堵漏材料的分解,配比材料经济。通过现场漏失钻孔段的实际堵漏验证,该方案可以有效解决大量漏失的问题,减少了辅助作业的时间,降低了工程成本。It is a common problem that the drilling fluid often goes through the borehole. Especially in the stratum including crack rock and shale, it occurs quite often. Sealing of cement hal/is adapted to the drilling bore in complex stratum in Dabao mountain. The author designs this sealing project due to the complex stratum and locale techniques. The cement, Urea-formaldehyde and acid are fixed to apply in the drilling bore through much experi- ment by the author. In many cases, the material will run away by the force of flowing underground water and can＇t keep its stability. In this experiment, the cement can keep itself away from broken. It takes little time during the concretion and keeps stabilization in the acid liquid. This project keeps the sealing of drilling bore normally, shorten the time of assistant work and cut down the cost of the drilling.

关 键 词：水泥球 复杂地层 钻孔堵漏 

分 类 号：P642[天文地球—工程地质学]