RokDoc 1D2D Introduction - 3 Day Course - Training Course by Ikon Science

RokDoc 1D2D Introduction - 3 Day Course

Available as a public course
Available as a private in-house course

Intended for new and intermediate users who require an introduction to RokDoc and the rock physics theories behind the software. Delegates are guided through a typical RokDoc workflow, comprising data loading and QC, predicting missing data with calibrated rock physics models, blocky modelling, log-based rock physics analysis and 2D forward modelling.

This course will cover Gassmann dry rock modelling, elastic log analysis, cross-plotting, anisotropy and well ties. Further analysis is then performed in RokDoc 2D to determine the effects of seismic tuning, fluid substitutions, porosity perturbation, anisotropy and noise.

Full Course Outline

What is RokDoc & an introduction to Rock Physics

  • What is Rock Physics?
  • A RokDoc Workflow

Workflow 1 – Project Management

Introduction to Project level data

  • Averages
  • Minerals Sets
  • Fluids Sets
  • Working intervals
  • Introduction to Well level data
  • Vp-Vs-Rho Sets
  • Log Sets (Mineral & Fluid)
  • Volume Fraction Sets
  • Saturation Sets

Workflow 2 – Creating Fluid Sets

Workflow 3 – Importing Well Data

  • LAS loading
  • Log Data
  • Markers
  • Position Sets
  • Deviation surveys
  • Checkshots

Workflow 4 – Well Viewer

  • Launching the Well Viewer
  • General right-click options
  • Colours Fills
  • Working Intervals
  • Creating and using well Views

Workflow 5 – Basic Cross-plotting for Data QC

  • Launching the Cross-plotter
  • Overlays
  • Polygons
  • Log Conditioning
  • Data QC in cross plotter. 
  • Cross-plot plot data conditioning
  • Calibrating trend lines and rock physics models

Introduction to the Log Calculator

  • Basic functionality

Introduction to the User Programmer

  • Basic functionality

Rock physics essentials

  • Data acquisition
  • Seismic essentials
  • Elastic properties and moduli
  • Density and Vs prediciton



Workflow 6 – Vs Prediction

  • Creating Volume logs
  • Volume Sets - Minerals
  • Volume Fractions
  • Creating Saturation Sets - Fluids
  • Vs Prediction- Greenberg Castagna
  • Vp-Vs-Rho Sets
  • Vs calibration
  • Case study

Workflow 7 – Deriving Averages

  • Deriving averages for use in single interface models
  • Using working intervals and cut-offs to derive averages

Workflow 8 – Blocky Operations – AVO and Gassmann

  • Principles of AVO
  • Blocky AVO single-interface models
  • Gassmann Fluid Substitution
  • Fluid and mineral mixing
  • Elastic Bounds
  • Limitations
  • Performing blocky fluid substitutions in RokDoc

Workflow 9

  • Log Operations
  • Fluid Substitution
  • Shaley Sand Gassmann
  • Dry Rock Modelling

Workflow 10 – Domain Transformations

  • MD-TVDSS conversion using deviation surveys
  • QC’ing deviation trajectories
  • TVDSS-TWT conversion using checkshots
  • QC’ing the depth-time curve

Workflow 11 – Synthetic Gathers Log Elastic Properties and Log Filtering

  • Synthetic gather generation
  • Gather manipulation
  • Gather Analysis
  • Log elastic properties
  • Angle dependent properties
  • Angle independent properties
  • Log Filtering

Workflow 12 – Advanced Cross-plotting

  • Matrix cross-plotting
  • Single-well and multi-well cross-plotting
  • Trend Lines and Overlays
  • Histogram Plot
  • Rose Diagram
  • Inversion Feasibility studies
  • Weighted stack cross-plotting




Workflow 13 – Loading and viewing seismic

  • Importing SEG-Y data from a single file
  • Inline and Crossline Viewers
  • Viewing time slices

Workflow 14 – Wavelet Estimation

  • Backus Averaging
  • Creating a statistical wavelet
  • Create Synthetic
  • Defining wavelet estimation inputs
  • Create Synthetic

Introduction to RokDoc 2D

  • Resolution, interference and tuning
  • Bright, flat and dim spots
  • Navigating in RokDoc 2D

Workflow 1 – Tuning Model

  • Creating a Simple Tuning Wedge
  • Creating and filling bodies
  • Manipulating model parameters
  • Measuring attributes
  • Changing body properties

Workflow 2 – One Well Layer Cake Model

  • Creating a Simple Layer Cake Model
  • Left-to-right Filtering
  • Fluid Substitution
  • Porosity Perturbation
  • Calculator
  • Adding Noise
  • Filling the model
  • Wavelet/filter frequency variation

Workflow 3 – Model from Seismic

  • Bringing Seismic into RokDoc 2D
  • Bayesian Classification
  • Coloured Inversion
  • Inputs
  • Populating the model
  • Interpreting events
  • ‘Matching’ to seismic
  • Calculator

Workflow 4 – Multi-Well Model from Seismic Backdrop

  • Building the model
  • Using more than one well
  • Importing backdrops
  • Re-positioning wells and markers
  • Digitising geologically consistent events
  • Perturbing the model

A rock physics case study



Upcoming Schedule

When Where Price
04 Dec - 06 Dec 2018 Ikon Science HQ Training Centre - Surbiton, London £1,575 View Details
06 Nov - 08 Nov 2018 Houston $2,900 View Details

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