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GeoThermal

Seismic, gravity and magnetotelluric methods combine to answer key economic questions for geothermal resource development

Building a conceptual model

Fx Mines has conducted more than 30 projects for geothermal resources in the last five years in the Western United States alone. The process involves developing a conceptual model of the subsurface with the surface geology to identify specific drilling targets. The model integrates any existing well data (well logs), plots temperature and pressure data, and then combines the result of each geophysical survey conducted, allowing for skilled, integrated interpretation.

Using state-of-the-art tools for 3D subsurface imaging, FxMines maps the underground geologic structures and fluid pathways. Each investigation adds information, refines the image, and reduces economic risk. Fxmines then assists in prioritizing drill targets and transitions this information to a development contractor to provide quantitative resource assessment.

Multi-method approach addresses required geologic conditions.

Exploration for geothermal resources requires deep sounding tools that are robust in volcanic terrains which has led to the established use of magnetotelluric (MT) and gravity geophysics methods. Used in combination, however, with the addition of 2D reflection seismic, these methods can provide even more insight and identify structural controls on fluid migration.

Well logs and core samples are standard for investigating the geology of a potential play, but they provide information only at specific points.