S75B-2双弹卡绳索取芯钻具在宁夏固原盐矿勘探中的应用

Application of S75B-2 rope coring drilling tools The application of the evalution in Ningxia salt mine exploration

针对宁夏固原盐矿勘探中地层松散、易坍塌、掉块、缩径,且钻孔设计为中深孔,通过引入S75B-2双弹卡绳索取芯钻具及高强度绳索取芯钻杆,通过优选取芯钻头,调整冲洗液性能,采取相应的钻孔、取芯技术措施,取得了高质量、高效率、高效益的好成果。

For ningxia evalution salt formation in exploration of loose,easy to collapse,impellers,reducing,and design for deep hole drilling, by introducing S75B-2 double play card rope coring drilling tools and high strength rope coring drill pipe, through the optimal selection of core drill bit, adjust rinses performance, corresponding drilling and coring technology measures, made of high quality, high efficiency, high benefit good results.