Underground gas storages from Romania are located in south Romania (in the Moesian Platform) and in Transylvanian Basin. They are converted from depleted gas reservoirs. Those from south have bigger capacity because the reservoirs are thick and stratiform, consisting of unconsolidated sand, with high porosity and permeability. The Transylvanian storages have smaller capacity because the layers are thinner, consisting of interbedded sandstones, silts and marls, with many lithological and facies variations, lower porosities and permeabilities. Geology of the reservoir has to be well known before constructing a deposit. Most important parameters are: depth of the reservoir, thickness, porosity, permeability, pore volume, structural model, tectonics, stratigraphic and lithological variations, type of aquifer, etc.
Geological characteristics of underground gas storages from Romania,
Studia UBB Geologia
Available at: http://scholarcommons.usf.edu/geologia/vol51/iss1/art11