Drilling Type Underreamer (DTU)

Description

The HOC DTU Underreamer has gone through several changes and modifications to adapt to the ever changing drilling applications and environments.

Features and Benefits:

  • Long proven history with over 2.5 million feet underreamed worldwide.
  • Expansion ratios 70% and larger than the OD of the body.
  • Hydraulically expandable with pump pressure.
  • Cutter arms move upward and out simultaneously in the body.
  • Fail safe cutter arm retraction.
  • Reverse actuating mechanism maintains that tool is open while drill string weight prohibits tool closure.
  • Unrestricted flow through ID.
  • Roller cone cutters are specifically designed for the HOC DTU underreamers and are consistent with down hole diameters.
  • Body machined from heat-treated steel bar, giving it exceptional strength.
  • Jet nozzles near the cutters allow for cutter washing and cooling.
  • Cutting Structures available include:
    1. Sealed Bearing Mill Tooth
    2. Sealed Bearing TCI
    3. PDC
    4. HOC’s ADD Cutter

 

DTU Specifications

 

Call For More Information   Request a Quote

 


Looking for more information or specific tool spec sheets? Contact us today for more information!