RokDoc Reservoir Characterization

2 Day Course
Intended for intermediate RokDoc users who require an introduction to Rock Physics Model Templates and RokDoc 3D. Attendees are taken through a series of workflows illustrating the predictive power of rock physics models, before progressing to RokDoc-3D, where the user can model lithologies and fluids, manipulate seismic inversion volumes, create elastic and geological property volumes, and export them to SEG-Y.

The first half of this course covers facies classifications, rock physics model calibration, forward and reverse log modeling, per-facies depth trends and simple blocky modeling. The second day focuses on 3D applications, including building models, 2D and 3D Bayesian classification, reverse modeling lithology and porosity from seismic, AVO analysis and extended elastic impedance.

Detailed Course Overview
Workflow 1 – Rock Physics Models
  • An introduction to the models
Workflow 2 – Rock Physics Model Templates
  • Unsupervised clustering for facies classification
  • Calibrating the models
  • Creating a model mesh
  • Incorporating seismic data
  • Highlighting modelled properties in 3D Volumes and Well Viewers
Workflow 3 – Forward & Reverse Modeling
  • Forward Modeling Vp, Vs & Rho
  • Reverse Modeling porosity and shale fractions
  • Uncertainty Threshold
  • Changing Rock Physics Model Template Variables
Workflow 4 – Creating per-Facies Depth trends
  • Depth Trend Calibration and Analysis
  • Bayesian Probability Density Functions
  • Modeling AVO at sand/shale interfaces
Workflow 5 – 3D Model Generation
  • Building the model
Workflow 6 – Make Zones and Create Base Model
  • Creating and populating the model
Workflow 7 – Map Viewer and Attribute Map
  • Creating time slices and horizon views of model attributes
  • Measuring pre/partial stack attributes
  • Creating fluid contacts in 3D
  • Fluid substitution
Workflow 8 – Weighted Stack Cross-plot
  • Reshaping inversion volumes
  • Rotating data in elastic space
Workflow 9 – Bayesian Classification
  • Creating and editing 2D Probability Density Functions
  • Bayesian Classification
  • Bayesian Classification from Depth Trends
Workflow 10 – Polygon Indicator
  • Creating and saving cross-plot polygons
  • Polygon Indicator
  • Polygon Indicator – Combinations
Workflow 11 – Realizing Property Volumes in 3D
  • Exporting outputs as 3D volumes
Workflow 12 – Rock Physics Model Templates in RokDoc 3D
  • Using Rock Physics Model Templates in 3D
  • Turning model meshes into classification systems
Workflow 13 –Reverse Modeling in 3D
  • Reverse Modeling porosity and shale volumes from elastic properties
Workflow 14 – Extract Log
  • Creating well logs from model properties
Workflow 15 – AVO Analysis
  • Calculating intercept and gradient from partial angle stacks
  • Performing AVO Analysis
Workflow 16 – Derived Elastic Property Volumes
  • Calculating extended elastic impedance properties

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