Fast Realizations from Geostatistical Simulations

摘要

Geostatistical realizations are generated based on estimates, which are based on measurements for which one can compute corresponding variances. A shift field is generated by generating random values, which may be constrained according to a confidence restraint. A value of the shift field is applied to a standard deviation for an estimate calculated based on the corresponding variance for that estimate. The random values may be generated according to a gradient noise algorithm taking as an input a wavelength defining smoothness of an array of random values. The wavelength is decoupled from a grid spacing of the estimated values.