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Effects of elevated confining pressure and temperature conditions on deeply buried sandstone reservoirs

Monsees, Alexander C.; Busch, Benjamin; Schöner, Nadine; Hilgers, Christoph

Abstract (englisch):
Connected open pores forming the matrix porosity are important fluid pathways in siliciclastic geothermal and hydrocarbon reservoirs at 2-5 km depth. Therefore, grain rearrangement by mechanical compaction, authigenic mineral formation during early and late diagenesis, as well as chemical compaction have a profound impact on permeability (Taylor et al., 2010; Busch et al., 2017). Petrophysical measurements in combination with petrographic information was employed to characterize potential analogs to reservoirs in Rotliegend fluvio-eolian sandstone units.
Petrophysical measurements were conducted on plug samples with a diameter and length of 3.0 cm. Helium porosity was measured with a micromeritics® AccuPyc II 1340 gas pycnometer. Klinkenberg-corrected permeability under steady-state conditions was measured at 1.2 MPa confining pressure at room temperature (22° C) using dry, oil-free lab air as a permeant. Also, Klinkenberg-corrected permeability under steady-state conditions was measured at confining pressures of 2, 5, 10, 30 and 50 MPa at room temperature (22° C) during loading and unloading cycles. Permeability pressure sensitivity coefficients after David et al. ... mehr


Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Poster
Publikationsjahr 2019
Sprache Englisch
Identifikator KITopen-ID: 1000126736
Veranstaltung 7th European Geothermal Workshop (EGW 2019), Karlsruhe, Deutschland, 09.10.2019 – 10.10.2019
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