High-Strength Hard Formation PDC Drill Bit
Our high-strength hard formation
PDC drill bits
adopt steel body & reinforced matrix dual structures, optimized for deep well, high-hardness and complex stratum drilling. With enhanced impact resistance, wear resistance and anti-cracking performance, this series solves the problems of slow drilling speed, easy tooth dropping and short service life of ordinary bits in hard and abrasive formations, suitable for industrial deep drilling and resource exploration projects.
1. Bit Size Range
Covers medium and large industrial standard diameters from 89mm to 444.5mm (3.5”–17.5”), including 89mm, 114mm, 140mm, 152mm, 165mm, 216mm, 311mm and 444.5mm. Special large-size bits can be customized for reaming and ultra-deep well drilling, fully meeting industrial high-standard drilling requirements.
2. Standard Thread Specifications
Equipped with high-strength API heavy-duty regular threads, mainstream specifications include 4 1/2” REG, 6 5/8” REG and 7 5/8” REG. The thickened thread structure improves tensile and torsion resistance, adapts to high-load and high-torque working conditions of deep wells, and ensures stable connection in complex downhole environments.
3. Blade Configuration
Adopts 5-blade, 6-blade and 8-blade dense tooth layout design. Multi-blade structure disperses drilling pressure, reduces single-tooth impact load, effectively resists stratum vibration and bit bouncing. The reinforced blade body improves overall rigidity, which is not easy to deform or break, suitable for long-term high-intensity drilling in hard and uneven formations.
4. PDC Cutter Specifications
Configured with large-diameter high-strength spherical and flat composite pieces, mainstream specifications are Φ16mm and Φ19mm. The ultra-thick diamond composite layer has strong impact resistance and abrasive resistance, can effectively break compact hard rock, avoid cutter damage caused by hard rock impact, and greatly improve single footage and comprehensive drilling efficiency.
5. Water Outlet Design
Optimized streamlined large-diameter water outlets with anti-blocking and self-cleaning design. The high-flux waterway realizes rapid slag discharge and efficient heat dissipation, adapts to high-temperature and high-pressure deep well environments, prevents cutter burnout and blade wear, and maintains stable rock-breaking capacity in complex formations.
6. Applicable Formations
Suitable for medium-hard to hard complex formations with firmness coefficient f=10–12, including hard shale, compact sandstone, limestone, dolomite, semi-weathered rock and mixed abrasive strata. It has excellent adaptability to uneven, fractured and high-abrasion complex strata.
7. Application Fields
Mainly used in deep oil and gas well drilling, mine deep exploration, large-scale geothermal well engineering, infrastructure deep foundation drilling and industrial reaming operations. It is a professional high-efficiency drilling tool for high-hardness complex stratum industrial projects.