甲魁煤田绳索取心液动锤钻进施工技术

Construction Technology of Wire-line Coring Hydrohammer Drilling in Jiakui Coalfield

摘要:

甲魁煤田地质构造复杂，岩层破碎胶结松散，换层频繁，断层破碎带多。在钻探施工中导致孔内事故多、岩（矿）心采取率低、钻进效率低等问题。通过使用绳索取心液动锤钻进技术，解决了在该矿田钻探施工中遇到的技术难题，减少了辅助时间，提高了钻进效率和岩（矿）心采取率，保证了钻孔质量。

Abstract:

The geological structure is complex in Jiakui coalfield with fractured rocks, loose cementation, frequent formations changing and fault fracture zone, so there are the problems such as many downhole accidents, low coring rate and low drilling efficiency. By the wire-line coring hydro-hammer technology, these technical difficulties were solved with less auxiliary time, improved drilling efficiency and coring rate and the borehole quality was ensured.