The History of Matching Solutions on The Basis of New Fast Simulator

The new fast history matching procedure uses several optimization methods and new finite element simulator for black oil reservoirs and creates new possibilities for computing of real problems. To demonstrate capabilities of our implementation that uses a number of optimization methods and a new finite-element based simulator, we present sample solutions for the history matching problem for three different types of black oil reservoir models: models based on permeability of layers only, models based on permeability of faults, and models based on both permeability of layers and faults. The three sample solutions were obtained by processing each type of reservoir model over a grid of 40x80x34. Each solution was assumed satisfactory with a 5% relative error in matching the reference data with corresponding data for the current selection of the history matching. All solutions are based on a model of a black oil reservoir composed of seven layers: three layers with conductivity higher than the other four, with the permeability of layers changing exponentially in the depth direction. In each case, results of the history matching were obtained with sufficient precision in less than 2 hours, using commodity hardware.