The influence of coal seam thickness and burial depth on the selection of water well drilling RIGS

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The thickness and burial depth of coal seams are key bases for selecting water well drilling rig.

 

  1. For shallow thin coal seams (thickness < 3m, depth < 200m), small portable rotary rigs meet needs with flexible operation and low costs.
  2. For thicker seams (>6m) or greater depths (>500m), choose high-power deep-hole rigs like hydraulic power head rigs:
    • They have large torque and strong drill pipe strength, adapting to complex deep geological conditions.
  3. Considering ground stress differences at different depths, also ensure rig stability:
    • Equip suitable foundation treatment and anchoring devices to keep the rig stable during drilling for efficient construction.water well drilling rig