Marine core drill bits are specialized tools designed for underwater drilling to extract sediment or rock samples. Mechanical systems in these bits ensure efficient cutting, stability, and sample retention during operation. They are engineered to withstand harsh marine conditions while maintaining precision and durability.

Size: 3.5 inches to 12.5 inches in diameter

Grade: API standards (typically Grade 5 or Grade 7)

Viscosity: Compatible with drilling fluids ranging from 30-150 cP

Buoyancy: Neutral to slightly negative buoyancy for stability

Material: Tungsten carbide inserts, high-strength steel matrix

Mechanical System: Hydraulic or pneumatic drive systems

Rotation Speed: 50-300 RPM

Weight: 50-200 kg (varies by size)

Pressure Rating: Up to 10,000 psi

Corrosion Resistance: Coated with anti-corrosive layers

Cutting Structure: PDC (Polycrystalline Diamond Compact) or roller cone

Compatibility: Suitable for soft to medium-hard formations

Connection Type: API threaded or quick-release mechanisms