11 5/8″ (295mm) PDC drill bits, including models tailored for hard, abrasive, and interbedded formations (often utilizing 5+ blades), are specialized for high-performance oil drilling. They feature high-strength synthetic diamond cutters for enhanced wear resistance and durability, designed to boost rate of penetration (ROP) and stability in challenging, tough rock.
Key Features and Applications
Size & Configuration: The 11 5/8-inch (295mm) size is typically used for intermediate casing sections, often designed with 5 or more blades to balance stability and speed.
Formation Suitability: Optimized for medium to hard and super-hard formations, including interbedded strata, by providing high thermal stability and impact resistance.
Cutting Structure: Uses advanced, high-density PDC cutters to enhance durability and ROP while reducing vibrations.
Design Characteristics: Features specialized hydraulic designs for improved cooling, cleaning, and anti-balling capabilities.
Performance Benefits
High ROP: Engineered to deliver faster drilling speeds in hard rock.
Durability: Enhanced wear resistance minimizes failure in abrasive, challenging geological environments.
Stability: Balanced, asymmetric blade design improves drilling stability in hard, interbedded formations.
These bits are commonly used for applications requiring high-reliability tools to achieve faster, more cost-effective oil well construction.