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Fracture Properties Needed
Fracture porosity & permeability are both a function of Fracture Width (e) & Fracture Spacing (D)
Fracture Porosity Magnitude
Fracture Porosity is Difficult to Calculate and Even More Difficult to Interpret
While Fracture Porosity is Small in Magnitude It is very effective porosity A possible large volume per well due to large drainage area and reservoir thickness An assumed high recovery factor
Fracture System Volume as a Function of Fracture Porosity & Drainage Nelson (1985)
FracturePorosity & Scale & Scale 2 ft Nelson (1985)
Depth & Depletion Corrections Are Much More Severe in Fracture Porosity Than in Matrix Porosity
Fracture & Matrix Porosity Compressibility
Tr Ss from Daw & Others (1974) Fracture & Matrix Permeability Compressibility
Fracture Porosity Calculator Nelson (1985)
Fracture Porosity Determinations
Fracture Porosity from Core Analysis
Fracture Porosity vs. Fracture Permeability Nelson (1985)
FracturePorosity/PermeabilityRelationship K. North Sea Chalk Valhall Field Nelson (1985)
Fracture Porosity from Outcrop Fracture Intensities Assumes Fracture Width for Ls at 10,000 ft from Lab Measurements Nelson (1985)
Sometimes Fracture Porosity & Matrix Porosity are Related
Calcite Filled Vessicle Trains Surrounding Fractures in Tert. Basalt West Rozel, Great Salt Lake, Utah
Matrix Saturation Around Fractures in Tert. Basalt West Rozel, Great Salt Lake, UtahCalcite fill in Outcrop
Calcite Along Vessicle Trains Along Fractures in Basalt West Rozel, Great Salt Lake, Utah
Permeability FracturePermeability Darcy (1856) Lamb (1957)
Empirical Factors Leading to a Good Fractured Reservoir Early recognition of fractures High fracture intensity & good connections Good interaction between.
Classification of Fractured Reservoirs Delineates the reservoir parameters most important in quantifying the reservoir (highgrades data acquisition) Potential.
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