Hydraulic combination window opening tool

  title={Hydraulic combination window opening tool},
  author={丁建林 and 余立群 and 储明来 and 王景喜 and 邱晓锋 and 陈碧波},
The utility model relates to a hydraulic combined window opening tool in the field of down-hole drilling tools; the tool comprises a milling cone and a whipstock; the milling cone is arranged on the upper end of the whipstock; the upper end of the whipstock is an inclined iron; bosses are arranged at different positions up and down on the upper end of the inclined iron; the head of the milling cone is stuck between the two bosses sidewards; the lower end of the milling cone and the upper end of… CONTINUE READING

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