Articles | Volume 12, issue 2
Solid Earth, 12, 521–537, 2021
https://doi.org/10.5194/se-12-521-2021

Special issue: Fibre-optic sensing in Earth sciences

Solid Earth, 12, 521–537, 2021
https://doi.org/10.5194/se-12-521-2021

Research article 25 Feb 2021

Research article | 25 Feb 2021

Wireline distributed acoustic sensing allows 4.2 km deep vertical seismic profiling of the Rotliegend 150 °C geothermal reservoir in the North German Basin

Jan Henninges et al.

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Cited articles

Barberan, C., Allanic, C., Avila, D., Hy-Billiot, J., Hartog, A., Frignet, B., and Lees, G.: Multi-offset seismic acquisition using optical fiber behind tubing, in: Conference Proceedings, 74th EAGE Conference and Exhibition, Copenhagen, Denmark, 4–7 June, Y003, 2012. 
Bauer, K., Moeck, I., Norden, B., Schulze, A., Weber, M., and Wirth, H.: Tomographic P wave velocity and vertical velocity gradient structure across the geothermal site Groß Schönebeck (NE German Basin): Relationship to lithology, salt tectonics, and thermal regime, J. Geophys. Res., 115, B08312, https://doi.org/10.1029/2009jb006895, 2010. 
Bauer, K., Norden, B., Ivanova, A., Stiller, M., and Krawczyk, C. M.: Wavelet transform-based seismic facies classification and modelling: application to a geothermal target horizon in the NE German Basin, Geophys. Prospect., 68, 466–482, https://doi.org/10.1111/1365-2478.12853, 2019. 
Blöcher, G., Cacace, M., Reinsch, T., and Watanabe, N.: Evaluation of three exploitation concepts for a deep geothermal system in the North German Basin, Comput. Geosci., 82, 120–129, https://doi.org/10.1016/j.cageo.2015.06.005, 2015. 
Cai, Z., Wang, Y., Liu, C., Zhang, Q., and Xu, X.: Cable noise analysis and suppression in DAS-VSP data, AAPG/SEG International Conference and Exhibition, Barcelona, Spain, 3–6 April 2016, 170, 2016. 
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Short summary
We performed a seismic survey in two 4.3 km deep geothermal research wells using the novel method of distributed acoustic sensing and wireline cables. The characteristics of the acquired data, methods for data processing and quality improvement, and interpretations on the geometry and structure of the sedimentary and volcanic reservoir rocks are presented. The method enables measurements at high temperatures and reduced cost compared to conventional sensors.