The difference in coal quality affects the selection of water well drilling rig bits.
- For lignite with low hardness and good toughness, use cutting-type bits like drag bits. Their rotary cutting action crushes coal seams efficiently.
- Bituminous coal with moderate hardness suits composite blade bits. These bits balance wear resistance and rock-breaking ability for effective drilling.
- Anthracite, with high hardness and density, requires PDC bits or roller cone bits. Their high-strength cutting teeth and impact-breaking capability enhance rock-breaking efficiency.
- Reasonably choosing bits based on coal quality reduces bit wear, improves drilling efficiency, and cuts construction costs.water well drilling rig
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