Dear DPS Member, The next DPS meeting, featuring two presenters, is on March 5th 2026 (Thursday). We meet at our usual venue at KIVI Den Haag (Prinsessegracht 23, 2514 AP Den Haag) on the first floor. Pre-meeting coffee is served at 15:30h and talks commence at 16:00h. Social hour will follow at KIVI the talks. Attendance is free of charge.
Talk 1
Title: Improving the prediction of mechanical and thermal reservoir rock properties of Dutch geothermal plays
Speaker: Parvin Kolah Kaj, Delft University of Technology
Abstract: In this presentation, I will discuss the main findings of my PhD research on improvingthe prediction of mechanical and thermal rock properties in Dutch geothermalreservoirs. The study is based on an extensive laboratory dataset from the PermianRotliegend, Triassic Buntsandstein, and Lower Cretaceous Delft Sandstoneformations. I will show how porosity, mineralogy, and diagenetic processes controlthermal conductivity, acoustic velocities, and elastic behaviour, and how theserelationships differ between formations. The presentation will also outline howlaboratory measurements were integrated with well log data and machine learningmodels to improve property prediction beyond cored intervals, with the aim ofreducingsubsurface uncertainty in geothermal development.
Speaker Bio: Parvin Kolah Kaj is an engineer with a background in hydrocarbon reservoir characterization and several publications in petrophysics. She has industry experience as a geomechanical simulation engineer, contributing to reservoir modelling and development planning for green oil field projects within multidisciplinary teams. Her PhD at TU Delft focused on large-scale experimental research and data-driven modelling, with the goal of building a comprehensive database of the Dutch subsurface and developing predictive models for thermal and mechanical rock properties to support future geothermal projects. She combines engineering analysis, experimental work, and computational methods to address subsurface challenges. Parvin is actively engaged in professional and community initiatives: she serves on the board of SPE Young Professionals Netherlands and is an ambassador for Women in Geothermal in the Netherlands. She values collaboration across disciplines and enjoys working at the interface of academia, industry, and students.
Talk 2
Title: 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
Speaker: Sanchita Ganguly, Energie Beheer Nederland (EBN)
Abstract: Permeability – one of the most important subsurface parameters in Geothermal Energy, is often the most uncertain reservoir properties due to lack of direct measurements at various scale to capture reservoir heterogeneity. To have a better control over the Permeability variation and its uncertainties, it is essential to integrate and calibrate to available well data and compare with dynamic reservoir data.
The SCAN (Seismische Campagne Aardwarmte Nederland) project in the Netherlands includes drilling and acquiring extensive well data in potential geothermal reservoir – e.g., Buntsandstein and Rotliegend.The workflow of this study comprises of integration and calibration of logs, image and acoustic log data, derive permeability from core probe and plug data corrected for reservoir condition, upscale the log perm to match with well test reservoir transient analysis as well as PLT logs during injection.
The upscaled log permeability and well test results were compared at: 1) reservoir scale, and 2) at flow zones, to recognize the impact of heterogeneity at different levels. The match at reservoir scale was within same decade of variation, whereas the deviations at the flow zones were explained with the features observed from the high-resolution data (image logs and core). This workflow can help with future geothermal reservoir characterization, planning and performance optimization.
Speaker Bio: Sanchita Ganguly completed a master’s degree in applied geology from IIT Kharagpur, India and has 21 years of experience in the energy sector. She joined, Schlumberger, India, as a Borehole Geologist and Image log specialist, followed by Wintershall Noordzee in the Netherlands, as Senior Petrophysicist, and later continued in Wintershall Dea, Germany. Sanchita has worked in many petroliferous basins in India, in the Dutch, Danish, UK, and German North Sea, a couple of Norwegian fields as well as in GOM, Mexico, spanning oil and gas exploration, appraisal, development, abandonment as well as CCUS exploration projects. In her current position at EBN B.V., she is responsible for petrophysical evaluation and monitoring of various Dutch offshore oil and gas projects (as investment partner), some of the Dutch SCAN well data for Geothermal Energy as well as the CCUS workover project ‘Porthos’.
Looking forward to seeing you there!
DPS Board