DTH Hammer Selection for Medium-Deep Well Soft Rock: Water Well Drilling Rigs

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The water well drilling rig needs medium-pressure large-diameter hammers (130-180mm) for 100-200m soft rock.

 

  1. Enhances cuttings removal: 1.0-1.2MPa pressure clears deep debris. A 150mm model cut jamming by 40% in 20% gravel.
  2. Choose long-stroke (50-80mm): >300J impact energy breaks <100mm gravel. Critical for bibbey-rock and sandstone layers.
  3. Prioritize sealing: Keep pressure loss <20% at 150m. Sealed models boost energy use by 15% at 200m.

Bits last 80m with optimized designs. The water well drilling rig relies on these for stable medium-deep drilling.