Field Case Study: φ94 Three-Wing Concave Bit

300 m per bit in f=8 aluminous mudstone inclined-shaft conditions

Section 1: Working Conditions

Section 2: Rock Formation & Drilling Parameters

Section 3: Performance After Field Use

• After 300 m of accumulated drilling per bit, the main body remained intact and the three-wing profile stayed clear.
• Wear on the cutting teeth and wing support areas was concentrated in the normal working contact zones, showing controlled wear.
• The central concave design helped reduce bit balling and improve cuttings discharge.
• In f=8 aluminous mudstone inclined-shaft conditions, the bit delivered stable drilling with reliable wear and impact resistance.
• Suitable for underground drilling in mudstone, coal seams, soft sandstone roadways, and similar formations.
• The PDC cutters are tightly bonded to the bit body, with a stable and reliable bonding interface.

Section 4: Image Captions

Before Use	After Field Use
Unused φ94 three-wing concave bit, showing the original three-wing structure, central concave design, and cutting tooth layout.	Our product after 300 m per bit in f=8 aluminous mudstone inclined-shaft conditions, showing intact structure and controlled wear.

Section 5: Key Advantages

• Fast cuttings discharge: The central concave design helps reduce bit balling and improve flushing efficiency.
• Wear and impact resistance: Stable structure after long-distance drilling in abrasive aluminous mudstone.
• Stable drilling performance: The three-wing structure improves support stability and helps reduce failure risk.
• Broad formation adaptability: Suitable for mudstone, coal seams, soft sandstone roadways, and general underground drilling.
• Higher operational continuity: Helps reduce downtime caused by bit balling and frequent bit replacement.

Section 6: Summary

In f=8 aluminous mudstone inclined-shaft conditions, our φ94 three-wing concave bit achieved 300 m per bit with stable drilling, fast cuttings discharge, wear and impact resistance, and low failure risk.