Geological characteristics of coal seams and Challenges in Water well Drilling operations

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Coal seams form from ancient plant remains through complex geological processes, featuring developed bedding, low strength, and large permeability differences.water well drilling rig

 

  1. They often interbed with sandstone, mudstone, الخ., and easily form folds/faults under tectonic stress.
  2. When water well drilling rig operate in coal seams:
    • Soft coal may cause borehole wall collapse.
    • Hard gangue interlayers can accelerate bit wear.
  3. Additionally, coal seams are rich in gas. Improper control of gas outburst during drilling may cause safety accidents.
  4. Aquifers in coal seam roof/floor may connect with boreholes, leading to water inrush and threatening construction safety.
  5. لذلك, conduct geological exploration before operation to understand coal seam occurrence and formulate targeted construction plans for safe and efficient rig operations.