Cutting Structures
"P" POWERCUTTERS
Varel's high-density "Powercutter" arrangement gives enhanced bit life through a variety of rock types without sacrificing ROP. The new Powercutter cutting structure provides extra exposure and cutter density on the critical shoulder area of the bit. Bits can now achieve maximum rates of penetration through one rock formation and then continue to penetrate harder sand or limestone beds without excessive wear or damage e.g. interbedded formations.
"U" UP DRILL / BACK REAM
When directional drilling hole wall sloughing, keyseating, or sever dog legs can occur requiring action. The updrill feature allows hole wall cleaning as you ream the well bore eliminating problems.
"W" CROWN TSP
Thermally Stable Polycrystalline diamond material is beneficially placed behind PDC cutters to improve bit stability with a grooving effect. A unique wear pattern is created increasing PDC cutter indentation as the cutter wears down.
"X" SHOCK STUDS
Shock Studs limit drill bit vibration and increase stability. When drilling conditions cause a vibration, Shock Studs make contact with the formation to help restore the bit's normal smooth cutting action. Smooth cutting action increases cutter life and overall bit performance.
Turbine sleeves can be customized to specific lengths and diameters to match each individual requirement. Sleeves are designed so the junk slots match the bit junk slots eliminating intersections, making the design hydraulically efficient. Gage protection on the sleeve can also be matched to the customer's need.
"G" PREMIUM GAGE
