The first two parts of this series showed that roller cone bit design analysis can predict cone behavior when heel teeth have equal pitch and how bit kinematics are modeled differently when the heel ...

Drill bit manufacturers have substantially improved polycrystalline diamond (PCD) cutters and drag bit designs since their introduction in 1972. PCD drill bits are now approaching the rolling cone ...

Varel International announced the launch of the A-Force roller cone bit series, a line built specifically for underbalanced applications, including air, foam and mist. A-Force bits bring together new ...