A Research And Energy Production Geothermal Project On The TU Delft Campus

Project Implementation And Initial Data Collection

Conference paper (2024)

Authors

P.J. Vardon

Philip J. Vardon

H.A. Abels Applied Geology -

L. Vargas Meleza Lab Geoscience and Engineering -

A.G. Vondrak Lab Geoscience and Engineering -

D.V. Voskov Reservoir Engineering -

A. Barnhoorn Applied Geophysics and Petrophysics -

Alexandros Daniilidis Reservoir Engineering -

D.F. Bruhn Reservoir Engineering -

G.G. Drijkoningen Applied Geophysics and Petrophysics -

K.N. Elliott Lab Geoscience and Engineering -

B.T.M. van Esser Lab Geoscience and Engineering -

S.J. Laumann Applied Geophysics and Petrophysics -

P.A.M. van Paassen Lab Geoscience and Engineering -

Research Group

Reservoir Engineering () (TU Delft)

Direct use geothermal Field testing Scientific drilling Field laboratory

To reference this document use:

http://resolver.tudelft.nl/uuid:751dadf2-1407-42ea-9937-370de4a5a05b

More Info

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Published Date

2024

Language

English

Reuse Rights

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Faculty

Civil Engineering & Geosciences

Department

Geoscience and Engineering

Research Group

Reservoir Engineering

Abstract

A geothermal well doublet, designed with two primary aims; one of research and the second of commercial thermal energy supply, is currently being installed on the campus of Delft University of Technology, with the wells being drilled in the second half of 2023. The project includes a comprehensive research program, involving the installation of a wide range of instruments alongside an extensive logging and coring program and monitoring network. The doublet has been cored, with continuous samples from the heterogenous reservoir being complimented with more distributed side-wall cores, alongside a large suite of open-hole well logs in the reservoir section of both wells. Such investigation is rarely undertaken in geothermal projects. A fiber optic cable will monitor the production well, and will be installed all-the-way down to the reservoir section when the well completion is installed, at approximately 2300m depth. The reservoir is the fluvial Lower Cretaceous Delft Sandstone that is used as a geothermal reservoir in a series of existing and planned doublets in the West Netherlands Basin. A local seismic monitoring network has been installed in the surrounding area with the aim of monitoring very low-magnitude natural or induced seismicity. A vertical observation well with electromagnetic sensors will be drilled in a few y ears’ time between the injector and producer to monitor cold-front propagation. The total project is targeted to supply around 25 MW of thermal energy at peak conditions, next to this project a thermal energy storage system is planned to provide a seasonal buffer. The project is a key national research infrastructure and is being incorporated into the European infrastructure EPOS (European Plate Observing System, https://www.epos-eu.org/), such that accessibility and data availability will be as wide as possible. All observations will be included in a digital-twin framework that will allow better decisions to be made in future geothermal projects. This paper presents the implementation and initial data collection from the project, including an initial evaluation of the logging and coring campaigns.

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