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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 – Two-Phase Flow
Two-Phase Flow A condition that is attained in production wells associated with high temperature (>200°C) geothermal reservoirs, wherein the flowing fluid comprises a mixture of steam and water. As the two-phase fluid depressurizes in the well, it expands causing...
Word of the Week – Turbine
Turbine Spinning axle mounted with fan blades that converts a fluid flow stream into mechanical energy. To produce electricity, the mechanical energy from the turbine is connected to a generator.
Word of the Week – Unconformity
Unconformity Geological term that refers to an ancient surface that has been buried and now represents a discontinuity or break between coherent masses of rock or strata.