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 ...

“Fishtail” drill bits became obsolete in 1909 when Howard Hughes Sr. patented the dual-cone roller bit. By pulverizing hard rock, the new bit with two rotating cones brought faster and deeper rotary ...

A new tapered bearing assembly, developed specifically for roller-cone rock bits, significantly increased bit life for a Middle Eastern operator. This technology can help oil and gas customers avert ...