Limestone Drilling: 113 mm Spiral PDC Bit on a 150-Class Rig
16 Jul 2026
Project conditions
- Location: Guangxi, China
- Formation: Limestone
- Drilling rig: 150-class drilling machine
- Drilling tool: 113 mm FS spiral PDC drill bit
Observed result
The recorded penetration was 3 meters in 45 minutes. The field feedback also reported long service life under normal use.
What this case shows
This result is a field reference for comparable limestone conditions. Final selection still depends on formation integrity, rig parameters, circulation and target hole specification.
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