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Rhino RHE

Dual-reamer rathole elimination system

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

Rhino XM

On-demand multiactivated reamer

Achieve more reliability with a truly on-demand hydraulically activated reamer—more reliable than third-party reamers.

Cement Cleanout Blocks

Rhino system complement

Clear cement from casing when drilling out the shoe track.

Stabilizer Blocks

Rhino system stabilizer

Achieve concentric, stable points of contact in the enlarged hole section and increase lateral support.

StingBlock

Advanced stabilization conical element cutter block

Improve footage and ROP in high-vibration, high-impact drilling applications.

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Case Study Single-Trip, Integrated Rathole Elimination BHA Drills Wells 7.5 Days Ahead of AFE, Offshore Sakhalin

World’s first deployment of PowerDrive RSS with the Rhino XS2 reamer eliminates rathole cleanout run and optimizes openhole gravel-pack completions.

Case Study Rathole Elimination System Eliminates Three Trips, Saving 72 Hours in Deepwater Well

Rhino RHE dual-reamer system enlarges rathole in exploration well without dedicated cleanout runs offshore French Guiana.

Case Study Dual-Reamer Rathole-Elimination RSS BHA Saves 1.5 Drilling Days, USD 425,000 for Statoil

First integrated use of C-Link and Rhino RHE systems helps operator enlarge section in one run and achieves smooth DLS in <45° inclination, North Sea.

Video Rhino RHE Dual-Reamer Rathole Elimination System

Eliminate the need for a dedicated rathole cleanout run that can add 24 or more hours to drilling time.

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