DAS Distributed Acoustic Sensor

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 determined at fine scale intervals along the length of the fiber.

Geothermal Glossary

Word of the Week – Normal Fault

Word of the Week – Normal Fault

Normal Fault High angle fault that results from extensional stress and forms a steeply dipping planar structure. Slip movement during an earthquake is vertical and down dip. The down-dropped block is called the hanging wall and the uplifted block is called the...

Word of the Week – Packers and Plugs

Word of the Week – Packers and Plugs

Packers and Plugs Downhole devices emplaced into a well to seal zones and intervals so they can be pressurized by pumping fluid from the surface in order to stimulate fractures at a specified location. They are designed for temporary and permanent deployments,...

Word of the Week – PDC Drill Bit

Word of the Week – PDC Drill Bit

PDC Drill Bit Polycrystalline diamond compact drill bits have been long used in oil and gas drilling, and only recently have they been used in geothermal drilling. The PDC cutters are known for their resistance to wear and impact, including hot crystalline rock. They...

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Advancing innovative technologies to unlock Earth’s limitless geothermal energy.