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Breccia
Angular to sub-angular fragments of broken rock that are cemented together that are highly permeable and form on the surface due to sedimentary or igneous processes or in fault zones.
Geothermal Glossary
Word of the Week – Well Casing
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 internal bore, and prevent the inflow of water and/or collapse of the hole.
Word of the Week – Wellhead
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 support and attach the anchor casing via a welded connection. Other flow valves...
Word of the Week – Well Logging
Well Logging Methods used to survey and characterize the physical and geological characteristics along and near the wall of a well, including the temperature, pressure, fracture density, fracture orientation, porosity, rock type, casing integrity, and fluid...