SZ75与75C重型钻具、钻杆及钻头钻进试验

Drilling Tests of SZ75 and SZ7SC Heavy-duty Drilling Tools,Rods and Bits

本文介绍了SZ75重型绳索取心钻具和SZ75C重型绳索取心液动冲击回转钻具、φ75重型绳索取心金刚石钻头及φ71重型绳索取心钻杆在岩金矿区的生产试验效果,同时提出了存在的问题和改进意见。

Prcduntion tests of some heavy-duty core drilling equipments,including model SZ75 drilling tools,model SZ75C percussion rotation drilling tools,φ75 model coring diamond bits and φ71 drill-rods,achieved good results in nugget gold prospecting areas.Some suggestions for further improvement ofthese apparactus are propssed.