Photo by Jennifer Boyer: Geothermal Greenhouses in Hveragerði, Iceland. Geothermal Greenhouses: A...
Drill Cuttings
Small chips of rocks (e.g., <1/8 inch or <3 mm) obtained during drilling with a rotary bit that are continuously returned to the surface by the circulation of mud. Drill cuttings are the main source of geological and stratigraphic interpretation in the drilling of geothermal and oil-gas wells.
Geothermal Glossary
Word of the Week – Geochemical Tracer
Geochemical Tracer An environmentally benign chemical that is injected to trace fluid movement through the geothermal reservoir and that can be easily detected in produced hot fluid.
Word of the Week – Geothermal Gradient
Geothermal Gradient The increase in temperature with depth below the surface, usually reported in units of °C/km.
Word of the Week – Geyser
Geyser A rare type of hot spring that periodically discharges a fountain of hot water and steam (or sometimes just gas).