Hydraulic Fracture

Hydraulic Fracture

A rock-hosted tensile fracture that is created by injection of fluid under high pressure.

Geothermal Glossary

Word of the Week – Cyclone Separator

Word of the Week – Cyclone Separator

Cyclone Separator A large cylindrical vessel attached to two-phase production pipelines in geothermal fields that is used to separate dry steam from a fast-moving two-phase fluid. Steam separation results from cyclonic fluid flow, centrifugal force and gravity.

Word of the Week – DAS

Word of the Week – DAS

DAS Distributed Acoustic Sensor. Involves the deployment of fiber optic cable on the surface or in a well, and the detection of small variations in the refractive index of the fiber based on the scattering of light pulsed from a laser. Strain and temperature can be...

Word of the Week – DFIT

Word of the Week – DFIT

DFIT Diagnostic Fracture Injection Test. A subsurface well test in which pressure is monitored as a small volume of fluid is injected into a reservoir to develop a hydraulic fracture. Monitoring continues to produce a pressure versus time plot that is analyzed to...

Utah FORGE

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