Small diameter cone bit positioning deflection by wire-linecoring with steel ball supporting was used to solve the problem economically.
采用绳索取心钢球支撑小径锥面钻头定位偏斜技术对事故进行处理,经济有效。
2
The wire-linecoring tool of HSQ serial has kept up the technical features of conventional placer drills and derived the advanced structure from steel cable fishing tool for inner barrel.
HSQ系列绳索取心钻具,既保持了现用砂钻钻进的工艺特点,又发挥了钢绳打捞内管技术的方便性。
3
The technique of diamond wire-line taking -coring drill has been applied in China for more than 30 years. The drill process and operation rules have been formed completely.