DDT

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DDT Underreamers (Drilling Drag Type) are built to utilize either ADD Cutters or PDC Cutters where circulation is required through the tool. Designed with the piston and actuator combined as a single component, the tool operates with only one moving internal part.

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The relatively short overall length of the tool allows for easier steerability when drilling and underreaming simultaneously. The three bladed design, assisted with the reverse jetting action assures a full gauge hole and increased cutter life.