Schlumberger

Underreamers

Improve performance while enhancing borehole quality

Underreaming while drilling improves drilling performance while enhancing borehole quality. With operational flexibility ranging from demountable cutters to cutters that encompass milled tooth, tungsten carbide insert, and polycrystalline diamond compact (PDC) cutters, the range of tools available ensures optimum performance in any application.

Rhino Integrated Borehole Enlargement System

Drilling-Type Underreamer

GeoReam Dual-Diameter Near-Bit Reamer

Quad-D Dual-Diameter Drift and Drill Reamer

Reamaster-XTU Forged Cutter Arm Underreamer

Rock-Type Underreamer

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54-in Underreamer Aids Offshore Splitter Well Project

Drilling-type underreamer (DTU)
An operator working offshore UK used a 54-in DTU that can enlarge a pilot hole by up to 75%. Read case study