Wairakite A zeolite mineral of hydrothermal origin that was first identified in the Wairakei geothermal field in New Zealand by Alfred Steiner. It forms clear to white prismatic crystals,...

Well Casing Large diameter pipe that is assembled and inserted into newly drilled intervals of a well. The upper portions of a cased well are commonly cemented in place to provide a smooth...

Wellhead Surface equipment at the top of a well (oil, gas, geothermal) that provides a structural and pressure-containing interface for drilling and production equipment. It is used to...