In this presentation we will discuss different techniques to obtain digital representations of the pore structure and fluid distributions.This includes registration of scans and intensity normalization to enable arithmetic operation between different scans.For further numerical simulations,the micro-porosity is routinely excluded from the pore structure.Employing the difference image in combination with the scan of the dry image,we segment out the micro-porosity to obtain a digital representation of the fully resolved porosity only.Furthermore,distribution of the fluid phases where obtained at end-points,e.g.at irreducible water saturation and at residual oil saturation.Such digital representations of the fluid distribution inside the pore structure is then compared to results from lattice Boltzmann simulations on the same pore structure.