Measuring of drainage capillary pressure curves with digital microtomography imaging of porous

The paper explores the new technique of measuring drainage capillary pressure curves using digital microtomography imaging of porous media. Analysis of drainage curves is based on simulation experiments of displacement of one fluid in the pore volume with the other. Computational grid is represented by binary microtomography imaging of sandstone. Mathematical tool used for computation is the lattice Boltzmann method. Calculated curves have been successfully correlated with experimental data. It has been shown that the flowpatterns, used in simulation experiments, have revealed peculiar propagation in directions different from flowing pressure gradient, including opposite directions.
Materials and methods
Math modelling of two-phase flows in pore channels incorporates the lattice Boltzmann method. The two-phase boundary line phenomena are described with numeric field gradient. Test samples are represented by digital models of typical Berea sandstone and LV60A sandpack.
Results
The paper presents the new technique of measuring capillary pressure curves using digital microtomography imaging. Drainage capillary pressure curves have been successfully correlated. The curves have been derived from simulation experiments through digital models of Berea sandstone and LV60A sandpack aswell as from filtration experiments in a laboratory.
Сonclusions
The paper presents the new technique of measuring capillary pressure curves using digital microtomography imaging. Drainage capillary pressure curves have been successfully correlated. The curves have been derived from simulation experiments through digital models of Berea sandstone and LV60A sandpack as well as from filtration experiments in a laboratory.