Underreamers

[:en]Underreaming improves borehole quality. With operational flexibility ranging from demountable cutters to cutters that encompass milled tooth, tungsten carbide insert, and polycrystalline diamond compact (PDC) cutters.

Available Underreamer Tools
Body diameter: 5 3⁄4 in.
Opening diameters: 9, 11, 13, 16, 20 in.
Top connection: (IF box) 3 1⁄2 in.