Multicycle hydraulic underreamer

Rhino integrated borehole enlargement system

Overview

Complete control, unlimited activation cycles

The Rhino™ multicycle hydraulic underreamer is part of the rugged, precision-engineered Rhino integrated borehole enlargement system—a family of hydraulically actuated reamers that save rig time and bring production online faster by underreaming and drilling in a single run.

The Rhino multicycle hydraulic underreamer features an indexing system with a protective oil-filled chamber and functional design redundancy. The underreamer provides complete control of activation, eliminating pumpdown device activation. This eliminates placement of the Rhino multicycle hydraulic reamer below ID-restricted BHA components, such as MWD and LWD tools. Additionally, the reamer’s flow actuation changes the reaming mode in minutes, reducing reamer activation time and enabling an unlimited number of activation cycles during a run.

Applications

Hole enlargement while drilling
Mud systems with high solids content
Lost circulation material (LCM) as background treatments
Rathole elimination
Deep water
Extended-reach wells
Highly abrasive environments
Swelling formations

Benefits

Unlimited activations

The reamer’s flow actuation enables an unlimited number of activation cycles during a run.

On-demand wellbore enlargement

Faster deployment, activation, deactivation, and trip-out time.

Sticking prevention

Enclosed hydraulic oil and specially designed seals reduce sticking and static friction.

Time-saving performance

Eliminates a dedicated drillout run and delivers reduced rathole length in the same drilling run.

Features

Hydraulically activated multicycle cam mechanism in an oil-sealed chamber
Single-piece body for higher tensile- and torque-load capacity
Compatibility with rotary or rotary steerable BHA components
Innovative rotating cam stop to provide movement redundancy and reduce rotating seals
Optional locking mechanism for shoe-track drillout applications