• Concentric String Tool


    Our concentric string tool is essential for helping you improve hole-opening efficiency. It centralizes the reamer even in irregular pilot holes, increases ROP, and allows you to use a range of pilot sizes. The tool is laterally stable and enables improved logging while drilling (LWD) response in the smaller pilot hole.


    Force-Balanced Cutting Structure – Ensures tool stability even in demanding applications
    Dedicated Nozzles – Optimized flow layout ensures efficient cutter cleaning and cooling
    Premium PDC Cutters – Cutter type can be optimized to suit the demands of each specific application
    Non-aggressive Gauge – Ensures the tool follows the pilot hole and does not deviate
    BHA Design Flexibility – Can be used in tandem with underreamers for additional enlargement