High temperature aquifer thermal energy storage performance in Middenmeer, the Netherlands: thermal monitoring and model calibration
van Wees, J.D.A.M.
In 2021, the first full scale high-temperature aquifer thermal energy storage (HT-ATES) system became operational in Middenmeer, the Netherlands. The system is operated by ECW Energy and realized within the framework of the GEOTHERMICA HEATSTORE project. A dedicated monitoring program, including distributed heating sensors (distributed temperature sensing, DTS) at the hot well, cold well and monitoring well was deployed to keep track of the field performance. In this study, a first attempt at monitoring data evaluation and model calibration is done based on data from the first loading phase (heat injection), the resting phase, and the unloading (heat production) phase at the HT-ATES site in Middenmeer. Although a technical flaw in the cable resulted in frequent noise signals, an improved output could be generated using a filtering technique. The DTS measurements in the monitoring well in Middenmeer were able to capture the relevant processes such as the passing of the thermal front during injection and production, the upward flow of hot water due to buoyancy and permeability variations, and the heating of over- and underlying clay layers. A baseline model and three uncertainty scenarios have been analysed, and the first results show a good fit between the monitoring data and the thermal model scenario with a coarsening upward sequence in the aquifer. The DTS data and reservoir parameters will be investigated in more detail in a follow-up history matching project. History matching might be a crucial step in the initial operational phase in order to improve future performance prediction and adapt, where necessary, the operational control
High Temperature Aquifer Thermal Energy Storage (HT-ATES)
To reference this document use:
Distributed Temperature Sensing (DTS)
Geological Survey Netherlands
European Geothermal Congress 2022 Berlin, Germany | 17-21 October 2022, 1-9