DRILLING EQUIPMENT

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.