Drilling Drag Type (DDT)
An Underreamer for opening larger diameter bore holes with a smaller OD tool and 3 drag type cutters.
DDT - Underreamers
Description
An Underreamer for opening larger diameter bore holes with a smaller OD tool and 3 drag type cutters.
Designed to have a larger expansion ratio for milder applications that require circulation through the tool.
Features and Benefits
Designed with the piston and actuator as a single component.
The tool operates with minimal moving parts.
Cutters actuate in a scissor motion.
Hydraulically expandable with pump pressure.
Reverse jetting actuation assures a full gauge hole and increased cutter cleaning and life.
The DDT is designed to utilize PDC or HOC's ADD cutters.
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