Alea is a tool dedicated to quickly analyse the potential values of reservoir prospects. Alea captures and integrates 3D structural uncertainty to provide simple volumetric uncertainties. The structural framework consisting of horizons, faults and fluid contacts has a relatively high degree of uncertainty due to velocity and picking uncertainties. Net rock volumes distributions are computed given two horizons (top and base, or top and thickness) and fluid contacts. Uncertainty on horizons can be specified as upper or lower bounds within which the horizons will be stochastically simulated. Top and base are simulated in a consistent logical way insuring, for example, that they do not cross. Alternatively, one can provide existing alternative interpretations or depth converted horizons which are treated as weighted scenarios. Multiple simulations or scenarios for the fluid contacts can be similarly specified.
Alea can generate multiple (hundreds or thousands) consistent structural frameworks, reporting rock and fluid volumes, average areas, average fluid columns for each realization. Users can rank, interrogate, filter the realizations and export all the results directly to Excel. Additionally 2D maps (thickness maps, fluid column maps, pool maps, probability maps) are generated to summarize and visualize the structural variability.
Alea is typically used before doing further reservoir study to quantify uncertainty on the structure and possibly limit the number of scenarios that will be given to our Reservoir Risk Assessment tool (Jacta).
Rock Volume Uncertainty Assessment (Alea) features include:
- User friendly workflow guiding user through a systematic step-by-step approach
- Generation of multiple (hundreds or thousands) consistent structural frameworks
- Rock volume, average column height and average area distributions per fluid type
- Fluid column height, pool diagram maps per realization
- Average fluid column, probability and quantile maps for all the realizations
- Results export to excel
* Alea was developed in cooperation with  . |
