Bangxin drilling rig
Gravel Drilling: Challenges for Water Well Drilling Rigs
Water well drilling rigs face tough challenges in gravel layer exploration. water well drilling rig
Gravel layers mix 2-60mm pebbles with sand. Hard quartz/feldspar make up over 60%, unevenly distributed with large boulders.
Drilling bits endure heavy impacts and wear. Teeth crack easily; bodies wear too fast under pressure.
Gravel gaps cause mud loss, hole collapse, and stuck tools. “Candy cane” hole segments often trap drill strings.
Tips for water well drilling rig in gravel:
- Bit loss is 3-5x higher than in soil. Efficiency drops to 1/3 of soft layer drilling.
- Use ground-penetrating radar and sampling first. Map gravel size, density, and cementation.
- Base bit selection on precise geological data. This builds the foundation for success.
These steps help water well drilling rigs overcome gravel layer hurdles.