查干德尔斯钼矿复杂地层钻探技术探讨与实践

Discussion of Drilling Technology in Complex Formation of Chagandeersi Molybdenum Deposit

摘要:

针对内蒙古乌拉特后旗查干德尔斯钼矿区大部分地层（尤其进出矿层部位）破碎、漏失、坍塌、掉块的复杂特性，为避免因孔壁的不稳定等因素而造成卡钻、埋钻或报废钻孔等事故，结合以往复杂地层钻探施工经验，采取了腐植酸钾低固相泥浆及相关技术措施，确保了钻进的顺利，取得了良好的施工质量和效率，为下一步施工提供了技术保证措施和经验。总结了该区复杂地层钻探施工经验，可供类似矿区借鉴。

Abstract:

According to the breaking, leaking, collapsing and block-falling in most formations of Chagandeersi molybdenum deposit and to avoid bit sticking and burying drill, potassium humate low solid mud and relative technologies were adopted with good construction quality and high efficiency.