卢氏柳关铅锌矿区钻探施工技术

Technology of Drilling Construction in a Pb-Zn Mining Area

摘要:

针对河南卢氏柳关矿区钻探施工难题，采取优化钻孔结构，上部复杂孔段下入活动套管，加快了施工进度；采取小压力、低转速 绳索取心液动潜孔锤钻进技术钻进在孔斜控制方面有明显效果，钻孔弯曲度明显减少，提高了钻孔质量和施工成功率；经过现场分析，不断调整泥浆配方，并针对不同漏失地层，添加惰性堵漏材料，研究出一套适合该矿区复杂地层钻进的护壁堵漏技术。

Abstract:

According to the drilling difficulties in Liuguan Pb-Zn mining area in Henan, by optimizing borehole structure and putting retrievable casing in the upper complex hole section, the construction schedule was accelerated; with low pressure and slow speed wire-line coring hydro-hammer technology, the obvious effects of drilling deviation control and less borehole curvature were received, the construction quality and success rate were improved. Based on the field analysis，mud formulation was constantly adjusted and inert leaking stoppage material was added to different loss zones. A set of wall protection and leaking stoppage technology suitable for the complex formation of this mining area was developed.