The PDC Reamer is a dual-center drilling and reaming tool that integrates with the drill string, enabling reaming while drilling. This innovative tool is equipped with two sets of spiral reaming blades—upper and lower—each designed for specific reaming functions:
- Lower Blade Wing Group: Performs reaming while drilling or forward reaming during the downward drilling process.
- Upper Blade Wing Group: Handles reverse reaming during the tripping-out process.
This tool is specifically designed to enhance wellbore stability, particularly in directional wells, by reducing dogleg severity, eliminating underground doglegs and small steps, and expanding the wellbore diameter slightly beyond the theoretical bit diameter. It is highly effective in challenging formations such as expansive shale, salt-gypsum layers with creep, soft mud layers, and coal seams.
By employing the PDC Reamer, drilling operations benefit from reduced conventional drilling time, ensuring safer and smoother tripping, logging, casing running, and packer expansion. Additionally, the tool effectively clears cuttings surfaces in directional wells and provides EaD (Effective Angle of Drift) control in horizontal and extended-reach wells, improving overall drilling efficiency and performance.
✅ Dual Reaming System – Upper and lower blade wings enable both forward and reverse reaming.
✅ Reduces Dogleg Severity – Smooths wellbore trajectory for improved stability.
✅ Wellbore Enlargement – Expands borehole diameter to prevent collapse in soft and unstable formations.
✅ Time-Saving & Efficient – Reduces the need for separate reaming operations, optimizing drilling time.
✅ Enhanced Wellbore Cleaning – Improves cuttings removal in directional and extended-reach wells.
✅ Improves Well Integrity – Ensures safer casing, logging, and packer deployment
