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Hole Opening

GunDRILL Reamer


$8m saving on dedicated wiper trips

By replacing a standard stabilizer with the GunDRILL Reamer the client saved up to USD8m per year by eliminating the need for dedicated wiper trips throughout the Bakken Field.

The GunDRILL Reamer provides reaming through a simple blade design that uses proprietary Tungsten Carbide Inserts (TCI) that provide more reaming or stabilization according to the drilling and formation conditions and maintains the gauge for extended durations. TCI distribution is optimized to provide continuous reaming in longitudinal and radial directions. The PDC distribution works with our in-house cutter matrix design, resulting in balanced drilling and reduced vibrations. The PDC gauge is passive, allowing it to interact with formation only when undergauge occurs.

The GunDRILL is highly flexible being uni-directional for applications where only back reaming is required and bi-directional for applications where front and back reaming is required. There is also the directional variant with flat TCIs for applications where sliding is expected. The tool can be made in steel and non-magnetic configurations to extend the flexibility of tool placement anywhere along the BHA. By reducing the MSE fluctuations, improving WOB transmission, smoothing the pull out process (POOH) and increasing the casing RIH speed, the GunDRILL Reamer is contributing to enhanced drilling deployments in all formations.



Uni-directional GunDRILL Reamer

The single direction (uni-directional) GunDRILL Reamer is suitable for applications where only back reaming is required.


Bi-directional GunDRILL Reamer

The bi-directional GunDRILL Reamer is suitable for applications where front and back reaming is likely.


Directional GunDRILL Reamer

This directional variant is suitable for applications where drilling directional holes with mud motors and sliding is required.


On-Bit GunDRILL Reamer

PDC cutting structure on all blades of the backreaming end provide maximum number of PDCs for best backreaming performance even in tough conditions.

Flat TCIs on a longer crown enhance vibrations damping thru better gauge holding capability. TCI protrusion provides reaming action with the PDCs.

PDC cutting structure on alternating blades at forward reaming end backs up the bit in achieving desired hole size. Cutting structure starts above body diameter and extends to tool gauge diameter.

Blade offset on bit side improves TFA locally to allow a smooth flow path from bit junk slots to GDR junk slots.