Porous media microstructure reconstruction using pixel-based and object-based simulated annealing

Category Sedimentology
Group GSI.IR
Location International Geological Congress,oslo 2008
Author Diogenes, Alysson۱; Appoloni, Carlos۲; dos Santos, Luیs۳; Fernandes, Celso۳
Holding Date 03 September 2008

The reservoir rocks physical properties are usually obtained in laboratory, through standard experiments. These experiments are often very expensive and time-consuming. Hence, the digital image analysis techniques advances are a very fast and low cost methodology for physical properties prediction, knowing only geometrical parameters measured from the rock microstructure thin sections. This research presents a method for reconstruction porous media using the relaxation method simulated annealing. Using geometrical parameters measured from rock thin sections, it is possible to construct a microstructure tridimensional (3D) model. We assume statistical homogeneity and isotropy and the 3D model maintains porosity spatial correlation, chord size distribution and d3-4 distance transform distribution for a pixel-based reconstruction and spatial correlation for a object-based reconstruction. The 2D and 3D results are compared with microstructures reconstructed by truncated Gaussian methods and microtomographic images using geometrical parameters.