ND-S型水力式内割刀

Hydraulic Internal Cutter Type AND-S

ND - S型水力式内割， 从被切割的管柱内下放到预定深度， 加大泵压推动活塞下行使刀翼张开， 刀翼随同钻具旋转开始切割。它适合石油、地质部门切割各类型的套管、油管和钻杆 。如配接打捞矛时可切割、打捞—次完成。

Model    "ND-S"    Hydraulic Internal Cutter can be lowered into desired depth from cutted pipes string. The increased pump pressure can push piston downward as to make blade stretch. And the blade rotates in company with drill tool to start cutting. It can be used for all kinds of casing, tubing and drill pipe in oil/geology department. If it is equipped with the spear, cutting and fishing can be completed at the same time.