CARROLLTON, Texas--(BUSINESS WIRE)--Varel International, the leading independent manufacturer of drill bits and global supplier to the drilling industry, recently completed a massive 44” steel-toothed ...

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 ...

Maybe it’s a better understanding of rock mechanics and hydraulics. Maybe it’s material science and manufacturing innovations. More likely it’s just natural evolution or synergy at work. In either ...

Purpose: A drill bit converts surface energy (rotation, axial load, and drilling fluid power) into rock failure at the wellbore face, creating cuttings and deepening the hole. I.3 Energy sources at ...