2D/3D land seismic surveys are methods used to create images of subsurface structures, essential for mapping geothermal reservoirs and identifying drilling targets. In 2D surveys, seismic waves are generated and recorded along a single line, producing a vertical cross-section of the subsurface. 3D surveys, on the other hand, use a grid of source points and receivers to create a three-dimensional volume of data, offering more detailed and accurate subsurface imaging. While 2D surveys are quicker and more cost-effective, 3D surveys provide higher resolution and better characterisation of complex geological structures while requiring more sensors to be utilised.
For geothermal projects like URGENT, these surveys are crucial for identifying and mapping potential reservoirs in sedimentary basins and hard rock basement formations across Europe, helping to optimise well placement and enhance the success rate of geothermal energy development in urban areas.
Sources:
https://strydefurther.com/a-guide-to-land-seismic-survey-design
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