荡坪钨矿宝山矿区复杂地层钻进工艺

Drilling Technology in Complex Formation of Baoshan Mining Area in Dangping Tungsten Mine

江西荡坪钨矿宝山矿区地层复杂,岩石硬度高,破碎松散,钻进难度大,易出现坍塌、缩径、卡钻、埋钻等事故。针对该矿区复杂地层特点及施工难点,从设备选择、钻孔结构、钻头选用、冲洗液及护壁堵漏等方面,总结了一套有针对性的钻探技术措施,并在现场取得了较好的效果。

The formation of Baoshan mining area in Dangping tungsten mine was complicated with hard and broken rocks in Jiangxi Province. Drilling was very difficult because borehole collapsing, diameter shrinkage, sticking and burying often occurred. According to the characteristics of complex formation and the construction difficulties, a set of pertinent technical measures were summarized in equipment selection, borehole structure, bits selection, washing fluid and wall protection ＆ leakage control. Good effects have been obtained in the field application.