绳索取心钻进工艺在非金属矿产资源勘探中遇到的问题与对策

Problems of Wire-line Core Drilling Technique in Non Metallic Mineral Resources Exploration and the Countermeasures

摘要:

在介绍了非金属矿产勘探中钻探常见地层及其成孔特性和绳索取心钻进工艺特点的基础上，分析了绳索取心钻进工艺在非金属矿产勘探中容易出现的粘附卡钻、憋泵卡钻等事故的成因，提出了处理方法；总结了绳索取心钻进软、散地层的冲洗液类型、性能要求、维护管理等方面的经验；着重介绍了SJP水泥浆及其用于钻孔堵漏的灌注工艺方法。

Abstract:

Based on the introduction of common stratum of non metallic mineral exploration, boring characteristics and wire-line core drilling, the causes of accidents such as sticking and pump suffocation are analyzed with the countermeasures. This paper summarizes the wire-line core drilling experience about flushing fluid types, performance requirements and maintenance management in soft and loose strata; emphatically presents SJP cement slurry and its application in grouting technology for borehole plugging.