2026-06-10T04:14:47Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:69342020-10-09T15:09:45ZDOIDBDOIDB.GFZ

false4DOIDB.GFZ 10.5880/GFZ.4.8.2020.005 Cheng, Chaojie Chaojie Cheng 0000-0002-8751-5546 GFZ German Research Centre for Geosciences, Potsdam, Germany Milsch, Harald Harald Milsch 0000-0002-5915-5862 GFZ German Research Centre for Geosciences, Potsdam, Germany GFZ Data Services 2020 permeability sandstone flow-through experiments compound material > sedimentary material > sedimentary rock > generic sandstone > sandstone EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > SEDIMENTARY ROCKS In Situ/Laboratory Instruments > Probes > PERMEAMETERS physical property > permeability Milsch, Harald GFZ German Research Centre for Geosciences, Potsdam, Germany 2020-08-21 Dataset 10.1029/2020JB020122 CC BY 4.0 Temperature changes and variations in pore fluid salinity may negatively affect the permeability of clay‐bearing sandstones with implications for natural fluid flow and geotechnical applications alike. Cheng and Milsch (2020) investigated these factors for a sandstone dominated by illite as the clay phase.

Flechtinger sandstone, a Lower Permian (Upper Rotliegend) sedimentary rock outcropping and commercially mined at the Sventesius Quarry near Flechtingen, Germany, was selected for the experiments. Three cylindrical cores were drilled from a larger block. Subsequently, samples were prepared with polished and plane-parallel end faces having a diameter of 30 mm and a length of 40 mm. The three samples were labelled FS1, FS3, and FS4, respectively. The three samples were vacuum-dried in an oven at 60 °C for 24 hours. They were then set under vacuum in a desiccator chamber for 10 hours and saturated with deionized water for another 24 hours.

All experiments were performed with two flow-through apparatuses with details described in Milsch et al. (2008). The saturated sample is jacketed with a Fluorinated Ethylene Propylene (FEP) heat shrink tubing and is then mounted in the vessel. Afterwards, the two sample ends are connected to the upstream and downstream pumps, respectively. The flow direction, generally, is from the bottom to the top side of the sample but can be reversed for return permeability measurements.

Sventesius Quarry near Flechtingen, Germany 11.3058 11.3071 52.2396 52.2402 China Scholarship Council http://doi.org/10.13039/501100004543 201606410056 Bundesministerium für Wirtschaft und Energie http://doi.org/10.13039/501100006360 0324065