PDC Bits

PDC (Polycrystalline Diamond Compact) bits use synthetic diamond cutters brazed onto tungsten carbide studs or blades to shear rock through a scraping action. Since their introduction in the 1970s, PDC bits have revolutionized drilling—they now account for over 60% of footage drilled worldwide. The fixed-cutter design has no moving parts, which means fewer failures and longer downhole life compared to roller cone bits in suitable formations.

Core Advantages:

- No moving parts—eliminates bearing failures and lost cone risks

- 2-3x faster ROP than roller cone bits in soft to medium-hard formations

- Available in steel body and matrix body constructions

- Blade counts from 3 to 8 for formation-specific optimization

- Cutter sizes from 8mm to 25mm for varying rock hardness

- Custom back-rake angles for directional or vertical drilling applications

Q: What formations are PDC bits not recommended for?

A: PDC bits struggle in very hard, abrasive formations (quartzite, granite) where impact damage destroys cutters. They're also less effective in highly interbedded formations with frequent hard stringers. In these cases, roller cone or diamond impregnated bits are better choices.

Ready to switch to PDC and cut your drilling time? Send us your formation data and we'll design a bit that maximizes your ROP and meters per bit.