Sediment Diagenesis, Characteristics of Grains and Pore Geometry

In petroleum geology, pore space and grain geometry are important physical properties of sandstone reservoir rocks, due to their influences on oil and gas reservoir quality. Besides, grain surface roughness has impacts on the permeability, due to the declining flow diameter and on wetting behaviour, adhesion properties of fluids to pore walls in sandstone reservoir rocks. Recent analytical developments applied in geosciences are used to characterize the morphology of mineral grain surfaces, the fine surface structures of diagenetic minerals and to investigate their pore geometry in sandstones. The findings reveal the diagenetic history of sandstone reservoir rocks, grain morphology, grain surface roughness and a detailed insight into the geometry of pore spaces of rocks. The study was carried out in the group of Physics of Surfaces (POS), TU Darmstadt and written at the Ludwig-Maximilians University, Munich, Germany.