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Preprints
https://doi.org/10.5194/essd-2020-15
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2020-15
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  10 Mar 2020

10 Mar 2020

Review status
A revised version of this preprint was accepted for the journal ESSD and is expected to appear here in due course.

P3 – PetroPhysical Property Database – a global compilation of lab measured rock properties

Kristian Bär1, Thomas Reinsch2, and Judith Bott2 Kristian Bär et al.
  • 1Department of Geothermal Science and Technology, Institute of Applied Geosciences, Technische Universität Darmstadt, Schnittspahnstr. 9, Darmstadt, 64287, Germany
  • 2GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam, 14473, Germany

Abstract. Petrophysical properties are key to populate local and/or regional numerical models and to interpret results from geophysical investigation methods. Searching for rock property values measured on samples from a specific rock unit at a specific location might become a very time-consuming challenge given that such data are spread across diverse compilations and that the number of publications on new measurements is continuously growing and data are of heterogeneous quality. Profiting from existing laboratory data to populate numerical models or interpret geophysical surveys at specific locations or for individual reservoir units is often hampered if information on the sample location, petrography, stratigraphy, measuring method and conditions are sparse or not documented.

Within the framework of the EC funded project IMAGE (Integrated Methods for Advanced Geothermal Exploration, EU grant agreement No. 608553), an open-access database of lab measured petrophysical properties has been developed (Bär et al., 20182019: P3 – Database, https://doi.org/10.5880/GFZ.4.8.2019.P3). The goal of this hierarchical database is to provide easily accessible information on physical rock properties relevant for geothermal exploration and reservoir characterization in a single compilation. Collected data include classical petrophysical, thermophysical and mechanical properties and, in addition, electrical conductivity and magnetic susceptibility. Each measured value is complemented by relevant meta-information such as the corresponding sample location, petrographic description, chronostratigraphic age, if available, and original citation. The original stratigraphic and petrographic descriptions are transferred to standardized catalogues following a hierarchical structure ensuring inter-comparability for statistical analysis (Bär et al., 2019: P3 – Petrography, https://doi.org/10.5880/GFZ.4.8.2019.P3.p, Bär et al., 20182019: 3 – Stratigraphy, https://doi.org/10.5880/GFZ.4.8.2019.P3.s. In addition, information on the experimental setup (methods) and the measurement conditions are listed for quality control. Thus, rock properties can directly be related to in-situ conditions to derive specific parameters relevant for simulating subsurface processes or interpreting geophysical data.

We describe the structure, content and status quo of the database and discuss its limitations and advantages for the end-user.

Kristian Bär et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Kristian Bär et al.

Data sets

P³ - PetroPhysical Property Database K. Bär, T. Reinsch, and J. Bott https://doi.org/10.5880/GFZ.4.8.2019.P3

Petrographic Classification Table for the PetroPhysical Property Database P³ K. Bär, P. Mielke, and K. Knorz https://doi.org/10.5880/GFZ.4.8.2019.P3.p

Stratigraphic Classification Table for the PetroPhysical Property Database P³ K. Bär and P. Mielke https://doi.org/10.5880/GFZ.4.8.2019.P3.s

Kristian Bär et al.

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Short summary
Petrophysical properties are key to populate numerical models of subsurface process simulations and for the interpretation of many geophysical exploration methods. The P3 database presented here aims at providing easily accessible, peer-reviewed information on physical rock properties in one single compilation. The uniqueness of P3 emerges from its coverage & metadata structure. Each measured value is complemented by the corresponding location, petrography, stratigraphy and original reference.
Petrophysical properties are key to populate numerical models of subsurface process simulations...
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