Exploration-relevant sandstones of Valanginium in Lower Saxony 1 : 500,000 - porosity from drill core data
Description
The overview map shows the distribution of Valanginium (Lower Cretaceous) in the Lower Saxony Basin and shows in particular exploration-relevant sandstones and their properties. Regionally contiguous sandstones with a thickness of at least five metres are considered to be relevant for exploration. For these units, a potential as geothermally usable aquifers can be assumed, but this must be demonstrated on a site-specific basis in individual cases. Delimited from this, claystones, siltstones, clay-silt sandstones and light-weight sandstones are summarized on the overview map. Porosity, permeability and transmissivity of lithologies were not included in the mapping, but are reported as drilling-related parameters where available.
Sandstone porosities were calculated from the hydrocarbon database information from drill core data and, if available, borehole measurements. Porosities from drill core data are to be understood as effective porosities (%) and from borehole measurements as total porosity (%).
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https://nibis.lbeg.de/net3/public/ogc.ashx?NodeId=1213&Service=WMS&Request=GetCapabilities& |