Backreamer
Backup tool and method for preventing rotation of a drill string
Balanced or underbalanced drilling method and apparatus
Bearing elements for drill bits, drill bits so equipped, and...
Bi-center drill bit with enhanced stabilizing features
Bi-rotational coupling system
Big hole bit
Bit balling treatment
Bit balling treatment
Bit breakers, bits, systems, and methods with improved...
Bit connector
Bit for directional drilling
Bit guidance device and method
Bit head retaining system and method of installing a bit...
Bit torque limiting device
Blade or member to drill or enlarge a bore in the earth and meth
Bore hole drilling device
Bore lining and drilling
Bore location system and method of calibration
Borehole angle control by gage corner removal effects