Under Reamer
  • Fixed Diameter Hole OpenerFixed Diameter Hole OpenerFixed diameter hole opener is used for expanding drill areal large hole in terrestrial oil field and oceanic oil field. It is used to reaming the well bore what has been drilled by the big cone’s bit or used to connecting it to the drill bit and finish well drilling and reaming of hole.
  • Variable Diameter Hole OpenerVariable Diameter Hole OpenerVariable diameter hole opener is can also expand the well hole when drilling, it can save the trip out and drill down time, improve drilling efficiency. This under reamer is hydraulic expansion type, it’s convenient to control the open and close of tool arm.
  • TEL:+86-029-81138812
  • FAX:+86-029-62827812
  • ADDRESS:Hi-Tech Development zone, Xi'an China