摘要
汶川地震断裂带科学钻探项目WFSD-4S孔地层复杂,钻探施工难度大,孔内缩径、坍塌、掉块事故频发,给钻探施工带来了极大的困难。就WFSD-4S孔在孔深517 m发生的卡钻事故进行了详细的阐述,分析发生卡钻事故的原因及条件,采用了强力起拔、反钻杆、可退式打捞矛打捞、套铣等手段,最终成功处理该起卡钻事故。该起事故的经验,为同类事故的处理提供借鉴及参考。
The formations are extremely complicated in WFSD -4S of Wenchuan earthquake fault scientific drilling project, drilling was difficult with frequent wellbore shrinkage, collapse and block failing accidents, which brought great difficulties for the drilling construction. The sticking accident occurred at 517m depth is elaborated in detail, and the accident causes and conditions are analyzed. By means of forceful pulling, drill pipe reverse rotating, fishing by releasing spear, casing milling and some other ways, the sticking accident is smoothly processed. The treatment experience can be reference to the similar accidents.
出处
《探矿工程（岩土钻掘工程）》
2017年第1期15-17,共3页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
科技部科技支撑计划专项"汶川地震断裂带科学钻探(WFSD)"项目之"科学钻探与科学测井"课题
作者简介
翟育峰，男，汉族，1984年生，勘查技术与工程专业，硕士，工程师，从事钻探技术研究工作，山东省烟台市芝罘区机场路271号，282163880@qq．com。
