Rock Hardness & Mineral Distribution via Water Well Drilling Rig

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Water well drilling rigs’ core data reveal links between rock hardness and minerals.water well drilling rig

 

  1. In metal exploration, hard rocks (f=8-12) often hold sulfide ores. Chalcopyrite lies in silicified granite, with 100-150MPa compressive strength.
  2. Coalfield surveys show big hardness differences in coal seam roofs/floors. Roofs: sandstone shale (f=4-6), 40-60MPa. Floors: muddy shale (f=2-3), 20-30MPa. A water well drilling rig’s hardness curves pinpoint coal seams.
  3. In oil-gas exploration, dense sandstone (f>15) acts as good cap rock. Carbonate rocks (f=3-5) with dissolved pores may be quality reservoirs. Water well drilling rigs’ continuous hardness data aid reservoir evaluation.water well drilling rig