Schlumberger

Fixed-Diameter Hole Opener

Overview Product Sheets

Drill longer intervals with continuous cutter cleaning and clearing of debris buildup

The fixed-diameter hole opener is designed for use in soft clays and shales to medium-hard shales and limestones and is particularly effective in sticky formations where balling problems are encountered. Three jets with replaceable nozzles continuously clean the tool’s cutting structure, clearing debris buildup and increasing penetration.

A range of features are available for drilling in soft to medium-hard, and sticky formations

A range of milled tooth and tungsten carbide insert (TCI) cutting structures are available for a variety of formation conditions. The fixed-diameter hole opener is available in sizes 6 1/4 to 42 in, with hand-tool demountable cutters that are easily replaced on the rig floor. Tools for hole sizes of 36 in or more are designed with four arms and cutters. The robust design and construction enable drilling of longer intervals.

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Fixed-Diameter Hole Openers are Versatile and Robust

Fixed-Diameter Hole Opener
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