水力割刀在岩心钻探烧钻事故处理中的应用
投稿时间:2021-09-07  修订日期:2022-03-12  点此下载全文
引用本文:段晓,皮建伟,顾科伟,等.水力割刀在岩心钻探烧钻事故处理中的应用[J].钻探工程,2022,49(3):118-122.
DUAN Xiao,PI Jianwei,GU Kewei,et al. Application of the hydraulic cutter in the treatment of bit burning in core drilling[J]. Drilling Engineering, 2022,49(3):118-122.
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作者单位邮编
段晓 中国地质调查局西安矿产资源调查中心陕西 西安 710000 710000
皮建伟 中国地质调查局西安矿产资源调查中心陕西 西安 710000 710000
顾科伟 中国地质调查局西安矿产资源调查中心陕西 西安 710000 710000
杨可 中国地质调查局西安矿产资源调查中心陕西 西安 710000 710000
基金项目:中国地质调查局地质调查项目“秦岭地区金银矿资源勘查”(编号:DD20208008)
中文摘要:宁强县中坝外围预查区岩心钻探ZK1102钻孔地层裂隙发育,钻孔漏失严重。由于送浆时间不足,冲洗液未到达孔底即开始钻进,导致钻孔发生严重烧钻事故。烧钻事故发生后,通过尝试传统起拔、旋转等方法均无效后,结合便携式全液压钻机装备特点和地层条件现状,在能够确保找矿成果和事故处理的安全性、经济性以及可靠性的前提下,进行科学分析研判,甄选出了最佳事故处理方案,即利用BTW钻杆连接水力割刀切割事故段钻具,而后下入NTW钻具连接磨铣钻头研磨剩余钻具钻头,高效、经济、稳妥地解决了烧钻事故。在水力割刀实际应用中,分析总结了在不同操作顺序和切割参数下切割失败的原因,为施工人员积累了丰富的经验,为烧钻事故顺利处理打下了坚实的技术基础。本文对利用水力割刀处理岩心钻探烧钻事故进行了积极探索,为其他地区使用水力割刀处理类似复杂钻孔事故提供了参考。
中文关键词:水力割刀  便携式全液压钻机  烧钻事故  事故处理  研磨
 
Application of the hydraulic cutter in the treatment of bit burning in core drilling
Abstract:The formation in ZK1102 core drilling hole in the peripheral pre-survey area of Zhongba, Ningqiang county was fracture-developed, and the drilling leakage was serious. Due to insufficient pumping time, the drilling fluid had not reached the bottom of the hole when drilling began, resulting in a serious bit burning accident. The optimum accident treatment scheme was selected through scientific analysis and assessment based on the equipment characteristics of the portable full hydraulic drill and the formation conditions, at the prerequisite to guarantee the prospecting results, and the safety, economy and reliability of accident treatment. The BTW drill pipe was used to connect the hydraulic cutter for cutting the accident section in the drilling string, and then the NTW tool to connect the grinding mill to mill out the remaining drill bit; in such a way, the drilling accident was solved efficiently, economically and safely. With reference to field applications of the hydraulic cutter, the causes for cutting failure are analyzed and summarized under different operation sequences and cutting parameters, which has accumulated rich field experiences for on-site operators and laid a solid technical foundation for smooth handling of bit burning accidents. In this paper, the use of the hydraulic cutter to deal with core drilling bit burning accidents has been actively explored, which provides reference for other areas to use the hydraulic cutter to deal with similar complex drilling accidents.
keywords:hydraulic cutter  portable full hydraulic drill  bit burning  accident treatment  grinding
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