Abstract: A three-dimensional grid of a hydrocarbon reservoir can be received. The three-dimensional grid can include a plurality of cells, each cell of the plurality of cells can include a first index value, a second index value, and a third index value. The first index value, the second index value, and the third index value of each cell can together uniquely identify each cell of the plurality of cells. Each cell can further include at least one parameter measured from the hydrocarbon reservoir. A hydrocarbon saturation distribution of the hydrocarbon reservoir can be determined using a saturation height function and the at least one parameter of each cell of the plurality of cells. The hydrocarbon saturation distribution can include a cell hydrocarbon saturation estimate for each cell of the plurality of cells. The hydrocarbon saturation distribution can be provided. Related apparatus, systems, techniques and articles are also described.

Abstract: A three-dimensional grid of a hydrocarbon reservoir can be received. The three-dimensional grid can include a plurality of cells, each cell of the plurality of cells can include a first index value, a second index value, and a third index value. The first index value, the second index value, and the third index value of each cell can together uniquely identify each cell of the plurality of cells. Each cell can further include at least one parameter measured from the hydrocarbon reservoir. A hydrocarbon saturation distribution of the hydrocarbon reservoir can be determined using a saturation height function and the at least one parameter of each cell of the plurality of cells. The hydrocarbon saturation distribution can include a cell hydrocarbon saturation estimate for each cell of the plurality of cells. The hydrocarbon saturation distribution can be provided. Related apparatus, systems, techniques and articles are also described.