Interlayered Clay

Interlayered Clay

A mixture of different clays such as illite, chlorite, and montmorillonite that are structurally interlayered and form via rock alteration at moderate temperatures in shallow zones that overlie producing geothermal reservoirs.

Geothermal Glossary

Word of the Week – Scale

Word of the Week – Scale

Scale Refers to deposition of minerals (e.g., calcite, silica, anhydrite, clays) in the well and reservoir that reduce permeability and block fluid channels.

Word of the Week – Seismometer

Word of the Week – Seismometer

Seismometer An instrument that records ground movement most often caused by earthquakes, volcanic eruptions and quarry or mine blasts. Short period seismometers detect seismic events that occur within a few hundred kilometers, whereas broadband seismometers detect...

Word of the Week – Shear Fracture

Word of the Week – Shear Fracture

Shear Fracture A pre-existing joint or fracture that accommodates shear displacement due to frictional slippage, wherein the rough surfaces on the fracture surface create permeability due to self propping.

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