Multi-Sensor Seismic Processing Approach Using Geophones and HWC DAS in the Monitoring of CO 2 Storage at the Hellisheiði Geothermal Field in Iceland

Cinzia Bellezza (), Erika Barison, Biancamaria Farina, Flavio Poletto, Fabio Meneghini, Gualtiero Böhm, Deyan Draganov, Martijn T. G. Janssen, Gijs van Otten, Anna L. Stork, Athena Chalari, Andrea Schleifer and Sevket Durucan
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Cinzia Bellezza: OGS National Institute of Oceanography and Applied Geophysics, Borgo Grotta Gigante 42/c, Sgonico, 34010 Trieste, Italy
Erika Barison: OGS National Institute of Oceanography and Applied Geophysics, Borgo Grotta Gigante 42/c, Sgonico, 34010 Trieste, Italy
Biancamaria Farina: OGS National Institute of Oceanography and Applied Geophysics, Borgo Grotta Gigante 42/c, Sgonico, 34010 Trieste, Italy
Flavio Poletto: OGS National Institute of Oceanography and Applied Geophysics, Borgo Grotta Gigante 42/c, Sgonico, 34010 Trieste, Italy
Fabio Meneghini: OGS National Institute of Oceanography and Applied Geophysics, Borgo Grotta Gigante 42/c, Sgonico, 34010 Trieste, Italy
Gualtiero Böhm: OGS National Institute of Oceanography and Applied Geophysics, Borgo Grotta Gigante 42/c, Sgonico, 34010 Trieste, Italy
Deyan Draganov: Department of Geosciences & Engineering, TU Delft, Stevinweg 1, 2628 CN Delft, The Netherlands
Martijn T. G. Janssen: Department of Geosciences & Engineering, TU Delft, Stevinweg 1, 2628 CN Delft, The Netherlands
Gijs van Otten: Seismic Mechatronics, Habraken 2150, 5507 TH Veldhoven, The Netherlands
Anna L. Stork: Silixa Ltd., 230 Centennial Park, Centennial Avenue, Elstree WD6 3SN, UK
Athena Chalari: Silixa Ltd., 230 Centennial Park, Centennial Avenue, Elstree WD6 3SN, UK
Andrea Schleifer: OGS National Institute of Oceanography and Applied Geophysics, Borgo Grotta Gigante 42/c, Sgonico, 34010 Trieste, Italy
Sevket Durucan: Department of Earth Science and Engineering, Royal School of Mines, Imperial College London, South Kensington Campus, London SW7 2AZ, UK

Sustainability, 2024, vol. 16, issue 2, 1-21

Abstract: Geothermal power production may result in significant CO 2 emissions as part of the produced steam. CO 2 capture, utilisation, subsurface storage (CCUS) and developments to exploit geothermal resources are focal points for future clean and renewable energy strategies. The Synergetic Utilisation of CO 2 Storage Coupled with Geothermal Energy Deployment (SUCCEED) project aims to demonstrate the feasibility of using produced CO 2 for re-injection in the geothermal field to improve geothermal performance, while also storing the CO 2 as an action for climate change mitigation. Our study has the aim to develop innovative reservoir-monitoring technologies via active-source seismic data acquisition using a novel electric seismic vibrator source and permanently installed helically wound cable (HWC) fibre-optic distributed acoustic sensing (DAS) system. Implemented together with auxiliary multi-component (3C and 2C) geophone receiver arrays, this approach gave us the opportunity to compare and cross-validate the results using wavefields from different acquisition systems. We present the results of the baseline survey of a time-lapse monitoring project at the Hellisheiði geothermal field in Iceland. We perform tomographic inversion and multichannel seismic processing to investigate both the shallower and the deeper basaltic rocks targets. The wavefield analysis is supported by seismic modelling. The HWC DAS and the geophone-stacked sections show good consistency, highlighting the same reflection zones. The comparison of the new DAS technology with the well-known standard geophone acquisition proves the effectiveness and reliability of using broadside sensitivity HWC DAS in surface monitoring applications.

Keywords: CO 2 injection monitoring; geothermal reservoir; CCUS; surface seismic processing; distributed acoustic sensing (DAS); geophones (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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