The meeting was held on Thursday 5th March at KIVI, our usual venue, and was followed by a social gathering with drinks and snacks. The two presenters, for the first time in recent years, were both women, appropriately as Sunday 8th March was International Women’s Day.
The theme of the meeting rock and transport characterisation of Dutch geothermal reservoirs and kicked off with a presentation entitled Improving the prediction of mechanical and thermal reservoir rock properties of Dutch geothermal plays by Parvin Kolah Kaj, from the Technical University of Delft, which described work carried out during her PhD thesis research. It focused on thermal and mechanical properties of samples from prospective Dutch geothermal reservoirs and their correlation with porosity, mineralogy and diagenetic prcesses. The study was based on an extensive laboratory dataset from the Rotliegend, Buntsandstein, and Delft Sandstone formations
The second talk, entitled Integration of Logs, BHI and core with well test in quantifying flow variation – a case study from geothermal scan well (BLT-1) in the Netherlands, was given by Sanchita Ganguly of Energie Beheer Nederland (EBN) and described core probe and plug permeability data obtained from a recently drilled well (De Bilt-01) passing through two prospective geothermal reservoirs, its correction to reservoir conditions and upscaling to match with well-test and PLT log data during injection. High-resolution borehole image logs showed that deviations (of more than an order of magnitude in some cases) between PLT injection permeability and average log permeability could be accounted for by the presence of microfractures, and whether these were open or mineralised.
The meeting was well attended with some new faces as well as old ones. The photos show the speakers receiving their gifts at the end of their presentations (at left in each case).
