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. Drilling rigs can be mobile equipment
- mounted on trucks, tracks or trailers, or more permanent land or
- marine-based structures (such as oil platforms, commonly called
- offshore oil rigs' even if they don't contain a drilling rig).
- The term "rig" therefore generally refers to the complex
- equipment that is used to penetrate the surface of the Earth's crust.