... 7/8 to 26 Covers almost all IADC codes suitable for sidetracking, deep well drilling Advantage: 1> TCI tricone ... > be used for water well, oil field, underground, construction, geothermal, directional boringDescription: 1> Cutting structureIn response to the characteristics ... capability and increases ROP.5> Product ApplicationIt is suitable for sidetracking, deep well drilling and old well repairing.6 ...