组合双管绳索取芯心钻具在羊石山金矿勘查中的应用

Application of Combined Double Pipe Wire-line Core Drilling Tool in Yangshishan Gold Deposite Prospecting

摘要:

针对云南芒市上芒岗羊石山金矿钻进中含矿层破碎，取心要求高，采用110 mm单管钻进时常出现岩心采取率低、孔内事故频发的现象，探索研究的将110 mm单管钻进与95 mm绳索取心钻进相结合的钻探施工工艺，较好地解决了破碎含矿地层的钻进施工难题，保证了含矿地层的岩心采取率。

Abstract:

With the breakage of ore-bearing layer in Yangshishan gold deposite prospecting drilling in Yunnan, but coring reqirements are high, low core recovery rate and frequent downhole accidents often happen when drilling using 110mm single pipe. A set of drilling technology which combines 110mm single pipe drilling with 95mm wire-line coring is explored, the drilling difficulties in fractured ore bearing layers are solved and core recovery rate is ensured.