Drilling Type Underreamer (DTU)
The work horse of our rental fleet, the DTU is used for a variety of well bore enlargement applications.
DTU - Underreamers
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:
Tell us your application.
We'll build the right tool.
Our Team works directly with your drilling team to spec the right solutions – no guess work, no catalog shortcuts.