孔内事故的预防与处理

钻探施工经常发生诸如埋钻、烧钻、卡钻、夹钻、掉钻等事故，而导致发生各种事故的原因却多种多样，因此根据事故的具体情况，应选择不同的处理方式。对于较常见的事故采用捞、提、扫、冲、顶等办法来解决，对一些复杂事故，可使用反、透、扩、钻、剥、偏等方式处理。钻井中的卡钻、埋钻、烧钻等事故应以预防为主。

Prevention and Treatment of Down-hole Accidents

Accidents of drilling tool trapping, sticking, wedging, falling off and burnt out bit are usually happening. While the causations of accidents many and varied. According to concrete condition of accident different treatment should be adopted. For common accidents, fishing, hoisting, sweeping, flushing and pushing up can be used; for more complex accidents, reversing, penetrating, reaming, boring, peeling, and deflecting to deal with. Accidents like tool sticking, trapping and burnt out bit should pay more efforts on prevention.