Geophysical survey in geothermal exploration is very important. The geothermal system existence indicated by surface geological and geochemical evidences can be confirmed by imaging the subsurface condition through several physical parameters, such as: resistivity, density, magnetic susceptibility and microearthquake event.

The subsurface resistivity distribution could characterize the geothermal system components, such as conductive clay cap, possible reservoir and heat source, as well as the fault indication. The density of subsurface rock acquired from gravity data could be enhanced to investigate the possible intrusion existence and regional geological structure. Meanwhile, the magnetic susceptibility of subsurface rock acquired from magnetic survey could support the information of altered rock caused by demagnetization process. Furthermore, Microearthquake activity that occurred in a geothermal area could provide relevant indication regarding the geological structure and permeable zone.

NewQuest Geotechnology has dedicated specialists with years of experience for geophysical survey, start from survei design, data acquisition, data processing, data inversion/modeling and data interpretation, provides geophysical survey services, such as:
– Magnetotelluric Survey
– TDEM Survey
– Gravity Survey
– Magnetic Survey
– Microearthquake Survey

Geophysical data evaluation which includes reprocessing, quality control and remodeling can also be done to improve data quality. Good quality data will produce a confidence conceptual model. Which is expected to provide conclusive results.