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Challenge

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.

Variants:

Uni-directional

Uni-directional GunDRILL Reamer

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

Bi-Directional

Bi-directional GunDRILL Reamer

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

Directional

Directional GunDRILL Reamer

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

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On-Bit GunDRILL Reamer

PDC cutting structure on the leading and trailing segments of the tool enhance drilling operations in many ways.  While drilling ahead, these cutters help to smooth out any ledges or doglegs to efficiently improve wellbore quality while drilling.  The cutters on the leading edge also serve to reduce under-gauge drilling in hard rock applications.  During backreaming operations, the cutters on the trailing portion of the tool ensure the wellbore is reamed back to bit diameter even in hard and abrasive conditions.

Flat TCIs on a longer crown – just slightly under bit diameter – enhance vibration damping and further ensure that wellbore tortuosity and ledging is minimized.

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