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In situ stress database of the greater Ruhr region (Germany) derived from hydrofracturing tests and borehole logs

Kruszewski, Michal ; Klee, Gerd; Niederhuber, Thomas ORCID iD icon 1; Heidbach, Oliver
1 Institut für Angewandte Geowissenschaften (AGW), Karlsruher Institut für Technologie (KIT)

Abstract:

Between 1986 and 1995, 429 hydrofracturing tests have been carried out in six now-abandoned coal mines and two coal bed methane boreholes at depths between 600 and 1950 m within the greater Ruhr region in western Germany. From these tests, stress magnitudes and orientations of the stress tensor are derived. The majority of hydrofracturing tests were carried out from mine galleries away from mine workings in a relatively undisturbed rock mass. These data along with detailed information have been disclosed recently. In combination with already published material, we provide the first comprehensive stress database of the greater Ruhr region. Our study summarises the results of the extensive in situ stress test campaign and assigns quality to each data record using the established quality ranking schemes of the World Stress Map project. The stress magnitudes suggest predominantly strike-slip stress regime, where the magnitude of the minimum horizontal stress, S$_{hmin}$, is half of the magnitude of the maximum horizontal stress, S$_{Hmax}$, implying that the horizontal differential stress is high. We observe no particular change in the stress gradient at depth throughout the Carboniferous layers and no significant difference between tests carried out in coal mines and deep boreholes. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000155558
Veröffentlicht am 01.02.2023
Originalveröffentlichung
DOI: 10.5194/essd-14-5367-2022
Scopus
Zitationen: 2
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1866-3516
KITopen-ID: 1000155558
Erschienen in Earth System Science Data
Verlag Copernicus Publications
Band 14
Heft 12
Seiten 5367–5385
Vorab online veröffentlicht am 13.12.2022
Nachgewiesen in Web of Science
Dimensions
Scopus
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