Rhino RHE

Dual-reamer rathole elimination system

Illustration of the Rhino RHE dual-reamer rathole elimination system downhole.

Open ratholes closer to TD and avoid extra rathole cleanout runs

The Rhino RHE dual-reamer rathole elimination system is an integrated dual-reamer drilling system that enlarges the borehole to the top of the directional tool or the bit in one run. A passive near-bit underreamer is activated at TD, and the rathole is enlarged while drilling to avoid adding extra time to well construction, eliminating the need for a dedicated rathole cleanout run that can add 24 or more hours to drilling time.

The dual-reamer system comprises a Rhino XS2 full-cycle expandable reamer or a Rhino XS hydraulically expandable reamer that is run above MLWD tools, a near-bit Rhino XC on-demand hydraulically actuated reamer, a PowerDrive rotary steerable system, and a customized PDC bit. The system provides on-demand activation of the enlargement system with surface confirmation. It also offers the ability to work with Schlumberger MLWD real-time data extenders, enabling underreamer placement within the MLWD toolstring.

Rhino RHE dual-reamer rathole elimination system diagram.
Cutter blocks.

Cutter Blocks: 3D Innovations for the Best Performance

From the AxeBlock torque-reducing ridged diamond element cutter block to stabilizer blocks, our industry-leading family of cutter blocks combine the best cutters with a dynamically stable design for the best performance in a variety of formations—all in a variety of BHA configurations.

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Shortened schematic showing the components of a Rhino RHE system BHA.
Shortened schematic showing the components of a Rhino RHE system BHA.
Rhino RHE
Dual-reamer rathole elimination system