Rhino RHE Reamer System | Schlumberger

Rhino RHE

Dual-reamer rathole elimination system

Rathole elimination at TD
Eliminates the need for dedicated rathole elimination runs, reducing well construction time
On-demand activation
Provides on-demand enlargement system activation with surface confirmation
Configurable cutting structure
Enables the cutting structures of each underreamer to be matched to specific formation requirements

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: 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.
A
Motor or RSS
B
Measurement while drilling and logging while drilling tools
C
Primary underreamer
D
Rathole elimination underreamer
Rhino RHE
Dual-reamer rathole elimination system
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