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  Mass-balance threshold matching of geoelectric and seismic data: a case study from Ketzin

Weinzierl, W., Ganzer, M., Rippe, D., Lueth, S., Schmidt-Hattenberger, C. (2023): Mass-balance threshold matching of geoelectric and seismic data: a case study from Ketzin. - In: Miocic, J. M., Heinemann, N., Edlmann, K., Alcalde, J., Schultz, R. A. (Eds.), Enabling Secure Subsurface Storage in Future Energy Systems, (Geological Society special publications ; 528), London : Geological Society, 437-448.
https://doi.org/10.1144/SP528-2022-14

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025465 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025465_1
Genre: Book Chapter

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 Creators:
Weinzierl, Wolfgang1, Author              
Ganzer, Merlin1, Author              
Rippe, Dennis1, Author              
Lueth, S.2, Author              
Schmidt-Hattenberger, Cornelia1, Author              
Affiliations:
14.8 Geoenergy, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146039              
22.2 Geophysical Imaging of the Subsurface, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_66027              

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 Abstract: Seismic and geoelectric methods are used as complementary tools for the identification of fluid/gas effects in underground storage and production scenarios. Both methods present a different resolution. Seismic data tend to be acquired by much more dense geometrical layouts, and geoelectric acquisition as a potential field method shows information integrated over spatial distances. We present results matching seismic and electrical resistivity tomography (ERT) results from two repeat surveys performed during CO2 storage operations at the Ketzin pilot site in Germany. The approach is based on data acquired in 2009 and 2012 at different stages of total injected CO2 volume. Masses are obtained from the averaged change in acoustic impedance and are compared to masses inferred from inverted electrical resistivities. Archie's equation is used to obtain saturations from the ERT models. The sensitivity of the background resistivity, R0, as a relevant parameter in determining the mass of injected CO2 is analysed. A specific threshold analysis based on seismic thickness by bin has been applied to investigate the matching of seismically and ERT obtained masses. Both mass estimates match comparatively well, but show inherent sensitive parameters and their corresponding impact as temporal and spatial uncertainties that may cause mass differences for the areas of investigation.

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 Dates: 2022-12-082023
 Publication Status: Finally published
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1144/SP528-2022-14
GFZPOF: p4 T8 Georesources
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Title: Enabling Secure Subsurface Storage in Future Energy Systems
Source Genre: Book
 Creator(s):
Miocic, J. M. , Editor
Heinemann, N., Editor
Edlmann, K., Editor
Alcalde, J., Editor
Schultz, R. A. , Editor
Affiliations:
-
Publ. Info: London : Geological Society
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 437 - 448 Identifier: ISSN: 0305-8719
ISSN: 2041-4927

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Title: Geological Society special publications
Source Genre: Series
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Publ. Info: -
Pages: - Volume / Issue: 528 Sequence Number: - Start / End Page: - Identifier: -