Water injection may refer to: * Water injection (engine), for increasing efficiency or power of internal combustion engines * Water injection (oil production), for increasing the amount of petroleum extracted from oil wells *

Water injection well An injection well is a device that places fluid deep underground into porous rock formations, such as sandstone or limestone, or into or below the shallow soil layer. The fluid may be water, wastewater, brine (salt water), or water mixed with indus ...

, a type of groundwater well through which water is injected into an aquifer system

See also