PDC Drill Bit

PDC Drill Bit Matrix Body 8 1/2 Inch

What is PDC drill bit

A PDC (Polycrystalline Diamond Compact) drill bit is a high-performance cutting tool used in drilling operations. Obviously, it is named under its cutting structure, check figure 1 to check what Polycrystalline Diamond Compact looks like.

• Design: Features synthetic diamond layers bonded to tungsten carbide studs. And the diamond-edged cutters deliver extreme hardness and wear resistance.
• Function: Grinds through rock formations (soft to medium-hard) efficiently. So,  in most cases, it is ideal for horizontal directional drilling (HDD), oil/gas wells, and geothermal projects.
• Advantages:
  • Outlasts traditional roller-cone bits by 5-10x in abrasive conditions.
  • Reduces downtime with consistent penetration rates.
  • Handles high temperatures and complex geology.
• Market Use: Dominates shale drilling and trenchless projects. Leading manufacturers (e.g., Schlumberger, Baker Hughes, Vermeer, Kingdream) optimize PDC designs for HDD rigs.

Specs of this PDC bit

Bit Diamter                        8 1/2’’
IADC Code                         M423
Body Type                          Matrix
Blade Count                       5
Numbers of Cutters          54
Primary size of Cutters    19mm
19mm Cutters number     28
13mm Cutters number     26
Nozzles Quantity               3* #12 (12/32) + 3* #14 (14/32)
Thread connection            4 1/2’’ API REG PIN
Gauge Length                     3 in
Weight                                 80 kg
Make-up torque                 22.4-26.1 KN*m

Features of this PDC bit

• Matrix Body Design with High-Density Cutter Layout:
  Featuring a five-blade configuration and mid-parabolic crown profile, this design optimizes load distribution and rock contact. Additionally, high cutter density ensures enhanced cutting efficiency in medium-hard formations.
• Self-Stabilizing Geometry:
  Engineered to reduce bit vibration during operation, thereby reducing uneven cutter wear. As a result, operational lifespan is significantly extended.
• Proprietary Ring Slot Configuration:
  The expanded junk slot area prevents bit balling in sticky formations. When combined with the optimized nozzle layout, this synergy enhances cuttings evacuation and improves rate of penetration (ROP).
• Patent-Pending Rear Cutter Geometry:
  Unlike traditional rear cutter designs, this advanced placement provides superior flank protection and secondary cutting action. Consequently, bit stability and cutting efficiency in abrasive environments are markedly improved.
• Impact-Resistant Cutter Technology:
  Patented stable-strengthened cutters integrate reinforced diamond tables, hence that delivers exceptional impact resistance and prolonged abrasive durability.
• Ballistic Junk Slot Optimization:
  Ballistic junk slot geometry works in tandem with the engineered nozzle arrangement to accelerate cuttings evacuation. As you know, this ensures reduced recirculation and improved borehole cleanliness.
• Transverse Hydraulic Flow System:
  By integrating a transverse flow system, cutting structure dynamics are augmented. As a result, this enables simultaneous cuttings removal and cooling, ultimately sustaining drilling precision and bit longevity.