藏北无人区高原冻土复杂地层钻探施工实践  

Drilling construction practice in complex strata with frozen soil in the no man’s land of northern Tibet Plateau

作　　者：牟程江 廖麟祥 孙昌伟 郝怀何 林见华 杨益 王东[1] MOU Chengjiang;LIAO Linxiang;SUN Changwei;HAO Huaihe;LIN Jianhua;YANG Yi;WANG Dong(Civil-military Integrated Geological Survey Center,China Geological Survey,Chengdu Sichuan 610036,China)

机构地区：[1]中国地质调查局军民融合地质调查中心,四川成都610036

出　　处：《钻探工程》2025年第2期65-71,共7页Drilling Engineering

基　　金：中国地质调查局地质调查项目“西部地区战略性矿产靶区查证技术支撑(军民融合中心)”(编号:DD20243097)。

摘　　要：藏北无人区海拔高气候恶劣,施工物资运输难度大,在进行地质调查钻探工程施工中发生冻土融冻坍塌、泥岩强造浆缩径、长孔段连续破碎涌水等多种复杂问题。针对钻探施工遇到的难点,优化了钻具组合、冲洗液体系、钻探器具,采用短行程干钻取心、重力加杆、跟管钻进、导流泄压等技术措施,解决部分施工中遇到的问题。在该地区钻探施工积累了一定经验,为该区域能源资源调查提供有效的地质资料和岩心实物资料。The no man’s land in northern Tibet Plateau has a high altitude and harsh climate,and it is difficult to ensure the transportation of construction materials.During the drilling process,problems happened such as thawing and collapse of frozen soil,strong cementation and hole shrinkage in mudstone,continuous breakage and water-gushing in long holes,and so on.In view of this,technical measures are taken to solve the problems in the drilling process such as optimization of drill assembly,flushing fluid systems,drilling tools and equipment,and the use of short-stroke dry drilling,gravity plus rod,follow-up pipe drilling,and drainage pressure relief.The project team has accumulated some experience of drilling construction,which provids effective geological drilling data and physical core data for the survey of energy resources in this region.

关 键 词：高原冻土 融冻 涌水 干钻取心 重力加杆 导流泄压 

分 类 号：P634.5[天文地球—地质矿产勘探]