ZK5806钻孔绳索取心钻具脱落事故处理方法  

The treatment of wireline coring tool detachment accident in ZK5806 drilling hole

作　　者：葛晓华 GE Xiaohua(Drilling Engineering Technology Research Center of Shandong Bureau of Geology and Mineral Resources,Yantai,Shandong 264004,China;The Third Geological Team of Shandong Bureau of Geology and Mineral,Yantai,Shandong 264004,China)

机构地区：[1]山东省地矿局钻探工程技术研究中心,山东烟台264004 [2]山东省第三地质矿产勘查院,山东烟台264004

出　　处：《地质装备》2023年第6期32-36,46,共6页Equipment for Geotechnical Engineering

摘　　要：小口径岩心钻探施工过程中,钻具断裂落入孔内的情况时有发生,如果处理不当,还可能导致取心钢丝绳等断落孔内的二次事故发生,严重影响施工周期,更有甚者出现打捞失败,导致钻孔被迫侧钻或报废。因此,绳索取心钢丝绳(落鱼)的打捞与处理,对钻探施工极为关键,也一直是施工中的难题。山东莱州三山岛北部海域金矿钻探工程项目施工陆地与海上钻孔138个,总工作量15万余米,此项目属于施工周期长、工作量大、施工机台多、施工难度大的超大型钻探工程项目。在该项目ZK5806号钻孔事故处理过程中,全面分析了事故的发生原因,改进了现有打捞钩、自制抓筒、自制打捞筒和扩孔钻具,成功地解决了本次事故,取得了满意的技术效果。本文结合此案例提出了一些技术措施和处理方法,研究结果将为今后海上深孔、特深孔钻探中同类事故的处理提供有益的经验。During small diameter core drilling,it is common for drilling tools to break and fall into the hole.If not handled properly,it may also lead to secondary accidents such as the broken coring wireline falling into the hole,which will seriously affect the construction cycle,and even lead to fishing failure,and force the drilling to be sidetracked or scrapped.Therefore,the fishing and treatment of coring wireline(falling fish)is extremely crucial and has always been a difficult problem during drilling.The drilling project for gold mine in the northern sea of Sanshan island in Laizhou of Shandong province has constructed 138 land and offshore boreholes,with a total drilling workload of over 150000 m.This project belongs to a super large drilling with long drilling cycles,large workload,multiple machines,and high difficulty.In the process of handling ZK5806 drill hole accident,the accident reasons was comprehensively analyzed,the existing fishing hook,self-made grab barrel,self-made overshot and reaming drilling tool were improved,the accident was successfully solved and satisfactory technical results were obtained.This paper proposed some technical measures and treatment methods based on this case,which can provide useful experience for the treatment of similar accidents in offshore deep and ultra deep hole drilling in the future.

关 键 词：海上钻井平台 小口径岩心钻探 取心钢丝绳 落鱼打捞 

分 类 号：P634[天文地球—地质矿产勘探]