A Geothermal Plant from a Time-Scale Perspective

In recent years, geothermal energy use from low-temperature sandstone reservoirs has sharply increased. Nonetheless, the injection of heat-depleted fluids not been an easy task because well/formation damage and operational/economic issues. Sønderborg plant is a case example heat-mining reservoir. It in northeast towards Augustenborg Fjord. The present work takes into consideration regional local geology area, construction wells, field experience water chemistry. main issues appear to be related wells reinjection brine. Our chemistry analysis PHREEQC simulations indicate that brine was saturated with respect carbonate barite minerals. excess Ca2+ SO42− ions could have led formation precipitation sulfate scales. Moreover, increment iron concentration over time suggest ingress oxygen pitting corrosion due presence halide ions.