At the Core – April 2021 Keep up to date on what is going on at Utah FORGE. Read about it in the...
Stored Heat
Calculated thermal energy stored in a volume of hot rock. It is calculated using the rock volume, porosity, rock density, specific heat of rock, and the difference between the reservoir temperature and the background temperature given by the geothermal gradient outside the resource area.
Geothermal Glossary
Word of the Week – Slotted Linear
Slotted Liner In geothermal wells, this is a type of production casing that does not go to the surface, and instead with the aid of a “liner hanger” it extends below the casing shoe to protect the wall of the well. Slotted liner has pre-milled slots that allows for...
Word of the Week – Spudding In
Spudding In Denotes the start of the well. The term originated from cable tool drilling where spudding is the act of hoisting the drill pipe and letting it fall freely so that the drill bit strikes the bottom of the well bore with sufficient force to break the...
Word of the Week – Stable Isotopes
Stable Isotopes Refers to non-radioactive isotopes of elements, including those of oxygen, hydrogen, carbon, sulfur, and nitrogen. In geothermal geochemistry, the stable isotope ratios of oxygen (18O/16O) and hydrogen (2H/1H) in thermal waters are used to trace its...