Advanced Volumetrics Overview |
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The advanced volumetrics module is a straightforward way to calculate volumetrics with a set of specific reservoir and fluid properties using either a deterministic model or a probabilistic "Monte Carlo" model. ·A deterministic model uses a fixed set of inputs and generates a single calculated volume. ·A Monte Carlo simulation, on the other hand, uses a range of inputs to calculate a large number of possible reservoir volumes. The outputs are then arranged to give a probability density and cumulative distribution. Practically, both these Monte Carlo simulation plots show the likelihood for a different hydrocarbon reserves based on the range of possible reservoir parameters. To open the Advanced Volumetrics Module main module: Tools>Advanced VolumetricsWhen to use the Advanced Volumetrics ModuleMathematically, the Advanced Volumetrics tool calculates reservoir volumetrics based on a single set of averaged reservoir and fluid properties inside a cube with a defined volume. The Monte Carlo simulation performs this same deterministic calculation with values selected from a possible range of these same average values. This simplification is ideal for back-of-the-envelope calculations or for estimations of exploratory reservoirs. Well-drilled fields with large amounts of petrophysical data are better served by a grid-based volumetrics calculation. In contrast to the deterministic method, Petra uses grids of mapped thickness, water saturation, and porosity to calculate reservoir properties for heterogeneous reservoirs. For more information on using grids see, grid volumetrics. Units SetupThe first step is to select the desired units for the volumetrics calculation. This tool can import and export in different units.
The Units Setup window before (Left) and after (right) setting the desired units Related Topics |
