The study looked at a large carbonate shoal in southern Germany to understand how it can help model oil reservoirs. Different types of rock layers were identified in the shoal, with porous areas at the top of certain layers. These porous areas have high porosity but low permeability, while other areas have both high porosity and permeability. The distribution of porosity and permeability in the shoal is influenced by its shape and how it extends into the sea. This information can be used to better predict the characteristics of similar reservoirs in oilfields.