Finally, the model is ready for . Once the cells are populated, Petrel can instantly calculate the total volume of oil or gas in place by summing the values of the cells. This is often the primary deliverable for management and investment decisions. If the model is destined for reservoir simulation (dynamic modeling), it often must be "upscaled." A geological model might contain 50 million cells, which is too many for a fluid flow simulator to handle efficiently. Upscaling coarsens the model, reducing it to perhaps 100,000 cells while attempting to preserve the critical reservoir properties.
Always use the Blue Help Button within Petrel. It provides context-specific documentation for every active window, which is invaluable for troubleshooting specific tool parameters.
Property modeling fills the empty 3D grid cells with continuous petrophysical variables and discrete geological facies. Facies Modeling
Identify discontinuities in the seismic signal. Use Fault Sticks to trace the geometry of faults in 3D space. petrel tutorial
Similar to Microsoft Office, Petrel uses tabs (Home, Stratigraphy, Seismic Interpretation, etc.) that change based on your selected "perspective". 2. Data Ingestion
The Complete Petrel Tutorial: A Step-by-Step Guide to Seismic-to-Simulation Workflows
The Ultimate Petrel Tutorial: A Step-by-Step Guide to Subsurface 3D Modeling Finally, the model is ready for
Right-click the Input Pane > Import (on selection) . Choose file type (SEGY).
Open the process in the Property Modeling tab. Select the property log you want to upscale.
With the structural framework built, you must populate each individual 3D cell with discrete (facies) and continuous (porosity, permeability) reservoir properties. Scale Up Well Logs If the model is destined for reservoir simulation
Map your columns accurately in the import dialog: Well Name, X coordinate, Y coordinate, Kelly Bushing (KB) elevation, and Total Depth (TD). Import Well Deviations (Trajectory)
Because well logs sample data at half-foot intervals, you must average (upscale) these values to match the coarser vertical grid cells of your 3D model. Property Upscaling Steps Open the process in the Process Diagram.
Import as standard ASCII text or .txt files containing Well Name, X, Y, and Kelly Bushing (KB) elevation.
Align the grid directions with your primary fault trends to minimize grid cell distortion. Generate key pillars along the faults and trends. Making Horizons, Zones, and Layering
Before importing any data, you must establish a mathematically sound project foundation. Errors made at this stage will cascade through your structural design and well-targeting accuracy. Setting the Coordinate Reference System (CRS)