Choosing Types of Water Well Drilling Rig in Hydrogeological Exploration

Berita 68 Dilihat
A water well drilling rig type depends on exploration goals, geology and environment. Right choices boost efficiency and data quality.

 

  1. Percussion rigs: Break rock with bit impact, suited for hard formations like cobbles. Simple, cheap but slow; 60-70% core recovery. Good for shallow holes (<50m). In mountain bedrock areas, they quickly drill to find fracture water.
  2. Rotary rigs: Cut layer by rotating bits, over 90% core recovery. Fit soft formations, ideal for detailed exploration. Core rigs get intact samples; rotary table rigs drill fast. A plain exploration used rotary core rigs. Sand cores showed aquifer grain size, aiding water assessment.
  3. Pneumatic and vehicle-mounted rigs: Pneumatic rigs use air, efficient, good for dry areas (<100m). High energy use limits residential use. Desert explorations rely on them to avoid water shortage. Vehicle-mounted rigs move fast, fit large areas. A provincial survey used 20, finishing 500 holes in 3 months—3x faster.

Right picks cut 20-30% of costs. A water well drilling rig type directly affects exploration success.