A reservoir grid is a result of reservoir characterization. It enables visualizing and analyzing the distribution of the properties throughout the reservoir cells. Definitions of grid coordinate system vary from one simulator to another and must be clearly defined. Additionally, reservoir grids can be constructed for one-, two- and three dimensions as well as different geometries. Kraken has a capability which enables grid conversion. In the example provided below, the original reservoir grid has been converted to a cell-centered grid type.