钻探工程2024，Vol.51Issue(z1)：318-321,4.DOI:10.12143/j.ztgc.2024.S1.050
湖南明月峰地区水力割刀使用问题研究
Research on the use of hydraulic cutting knives in the Mingyuefeng area of Hunan Province
孙熙宇 1易军平 1沈应航 1贾明浩2
作者信息
- 1. 核工业二三〇研究所,湖南 长沙 410007||湖南省伴生放射性矿产资源评价与综合利用工程技术研究中心,湖南 长沙 410007
- 2. 中国地质科学院勘探技术研究所,河北 廊坊 065000
- 折叠
摘要
Abstract
During the drilling construction in the Mingyuefeng area of Hunan Province,accidents such as hole shrinkage and tool stuck are prone to occur in limestone and mudstone formations,and casing is often used for wall protection.Due to the deep penetration of the casing and the limited lifting capacity of the portable drill,it is difficult to recover the casing.The method adopted is to use a hydraulic cutter to cut the middle of the casing for recovery.In the actual cutting process,the success rate of casing cutting is not high,mainly manifested as the casing still cannot be lifted out of the drilling hole after cutting,and the hydraulic cutting blade after cutting is prone to breakage,excessive wear,etc.The main reasons are incorrect judgment of the stuck point position and irregular cutting operation.In this paper,precautions for the use of hydraulic cutting tools are formulated to address the reasons of cutting failure.Cutting the casing according to relevant precautions can significantly improve the success rate of cutting.关键词
水力割刀/套管切割/缩径卡钻/事故处理/便携式钻机Key words
hydraulic cutting blade/casing cutting/hole shrinkage and tool stuck/accident handling/portable drill分类
天文与地球科学引用本文复制引用
孙熙宇,易军平,沈应航,贾明浩..湖南明月峰地区水力割刀使用问题研究[J].钻探工程,2024,51(z1):318-321,4.
