• A drilling rig is an integrated system that drills wells, such as oil or water wells,
  • in the earth's subsurface. Drilling rigs can be massive structures housing
  • equipment used to drill water wells, oil wells, or natural gas extraction wells,
  • or they can be small enough to be moved manually by one person and
  • such are called augers. Drilling rigs can sample subsurface mineral deposits,
  • test rock, soil and groundwater physical properties, and also can be used
  • to install sub-surface fabrications, such as underground utilities,
  • instrumentation, tunnels or wells. 

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