MULTISCALE DIGITAL ROCK MODELLING FOR RESERVOIR SIMULATION

摘要

FIELD: physics, computer engineering.SUBSTANCE: invention relates to methods of obtaining characteristics of three-dimensional (3D) reservoir rock samples, particularly to up-scaling digital modelling data. Borehole-scale models use MPS (multi-point statistics) to combine minipermeability grids and conventional CT scans of whole core with electrical borehole images to create 3D numerical pseudocores for each RRT (reservoir rock type). Effective SCAL (special core analysis) properties computed from various MPS borehole-scale realisations or models are used to populate interwell-scale models for each RRT. At the interwell scale, seismic attributes and variogram statistics from LWD (logging while drilling) data are used to populate digital rock models. Effective properties computed from flow simulations for interwell volumes are used to populate full-field scale models.EFFECT: more accurate flow simulation.34 cl, 13 dwg