Variograms: LYNX has multiple options for Ordinary Kriging (OK) with variogram models. The standard list of variogram models includes Spherical, Exponential, Gaussian, Linear, and Cubic. Additionally, LYNX provides a Thin-plate variogram model (adopted from spline fitting algorithms) which is useful in identifying areal discontinuities in the data. LYNX also has a flexible internal variogram equation which can be used for quick analyses of the data. Upon selection of the property and formation names, multi-variate regression is automatically performed to identify uniform sill and nugget values with corresponding correlation distances for 180 theta bins. The user can select anisotropy direction and ellipse size interactively.
Automated Variogram Generation (Nugget=0 Example)