Geothermal Exploration

Stages in Developing a Geothermal Field

• Exploration, Feasibility, Development, Operation & Maintenance

• Exploration, Development, Feasibility, Operation & Maintenance

• Exploration, Development, Operation & Maintenance, Feasibility

• Feasibility, Exploration, Development, Operation & Maintenance

Indicator of a potential geothermal

• presence of thermal manifestations

• anomaly thermal gradient

• altered rocks

• acidic water

Components of Geothermal System, except

• Heat Source

• Reservoir

• Clay Cap

• Source Rock

Type of fluid that represents the reservoir

• Acid Sulphate

• Chloride

• Bicarbonate

• Magmatic

Type of fluid used for geothermometer

• Sulphate

• Bicarbonate

• Magmatic

• Chloride

Type of Convective Geothermal System, except:

• magmatic

• intracratonic basin

• plutonic

• extentional

Type of Conductive System, except:

• Magmatic

• Intracratonic basin

• Orogenic belt

• Crystalline Basement

Objective of Geochemistry, except:

• identify type of fluid

• estimate temperature of reservoir

• intrepret lithology composition

• estimate type of system

Role of geology in exploration

• identify lithology

• identify mineral alteration

• map distribution of structure

• map distribution of density anomaly

The correct role of Geophysics with understanding geothermal

• Magnetotelluric = heat source anomaly

• Magnetotelluric = clay cap anomaly

• Magnetotelluric = conductive anomaly

• Magnetotelluric = resistive anomaly