Software

HeterFrac and Fractal

The spatial pattern of fracture location is one of the most important parameters in discrete feature nework modelsing. HeterFrac (DOS) and Fractal (Windows) provide tools to carry out a quantitative analysis of spatial patterns from borehole and trace/lineament maps. HeterFrac provides the parameters required by the discrete fracture network models included in FracWorks.

HeferFrac and Fractal

HeterFrac Spatial Pattern Analyses

Analysis Borehole (1D) Data Trace (2D) Data
Statistics Intensity (spacing) P10 Termination probability
Termination percentage
Intensity P21
Baecher and BART (Poisson) Models Spacing distribution
Intensity		 Poisson distribution test for fractures per grid cell
Fractal Models Divider dimension
Spectral dimension
Variogram dimension		 Levy flight mass dimension measures
Box dimension
Geostatistical Models 1-D,2-D, 3-D variograms
Spherical, exponential, and power law variograms
Nested variogram models
Data de-trending		 Variogram analaysis from grided data as centers/meter^2 (P20) or trace length /meter^2(P21)
Nearest Neighbor Models Stationarity measures Power-law fit to intensity variation with distance
War Zone Models Stationarity measures War zone parameters (zone intensity, closeness, overlap, and largeness)
Deterministic zones and stochastic zones
     

FracMan Program Modules