OpendTect User Documentation version 4.2

dGB Earth Sciences

Copyright © 2002-2011 by dGB Beheer B.V.

All rights reserved. No part of this publication may be reproduced and/or published by print, photo print, microfilm or any other means without the written consent of dGB Beheer B.V. Under the terms and conditions of either of the license holders are permitted to make hardcopies for internal use: GNU GPL Commercial agreement Academic agreement
Table of Contents
1. Preface
1.1. About this manual
1.2. Release notes
1.3. About OpendTect
1.4. Copyright
1.5. Acknowledgement
2. Getting started
2.1. System overview
2.1.1. Multi-Threading Programming
2.2. Toolbars
2.2.1. OpendTect toolbar
2.2.2. Manage toolbar
2.2.3. Graphics toolbar
2.2.3.1. Take Snapshots
2.2.3.2. Directional Lighting
2.2.4. Tracking toolbar
2.2.5. Slice position toolbar
2.3. Mouse Controls: Scenes & graphical interaction
2.4. Color Tables
2.5. General selection window
2.6. 2D Viewer
3. How to...
3.1. Quickstart a Project.
3.1.1. OpendTect Survey
3.1.2. Setup 2D/3D survey
3.1.2.1. Survey name and Type
3.1.2.2. Survey ranges
3.1.2.3. Coordinate Settings
3.1.3. Data loading
3.1.3.1. Load Seismic (2D/3D)
3.1.3.2. Load Well data
3.2. Display loaded data
3.3. Interpret horizons
3.3.1. 3D Horizon
3.3.2. Edit 3D-horizon
3.3.3. 2D Horizons
3.4. Interpret Faults
4. OpendTect Trees and Elements
4.1. Scene
4.2. Inline, Crossline & Z-slice
4.3. Volume
4.4. Random line
4.4.1. Manual Mode (Empty)
4.4.2. Create from existing
4.4.3. Create along contour
4.4.4. Create from polygons
4.4.5. Create from wells
4.4.6. Create from table
4.4.7. Interactive mode
4.5. PickSet/Polygon
4.5.1. Manual/Empty Picksets
4.5.2. Generate Random Picks (3D)
4.5.3. Generate Random Picks (2D)
4.5.4. Polygon
4.5.5. Pop-Up Menus
4.6. Horizon
4.6.1. Add Attribute
4.6.2. Color Blended Display
4.6.3. Algorithms
4.6.3.1. Grid
4.6.3.2. Filter
4.6.3.3. Snap to event
4.6.4. Display Contours
4.6.5. Calculate Isopach
4.6.6. Flattening
4.6.7. Tracking
4.6.8. Shift
4.6.9. Calculate Volume
4.6.10. Other Options
4.7. 2D Horizon
4.7.1. Derive 3D Horizon
4.7.2. Derive 2D Horizon
4.7.3. Tracking
4.7.4. Create Flattened Scene
4.7.5. Re-snap 2D Horizon
4.7.6. Interpolate 2D
4.7.7. Other Options
4.8. Fault
4.9. FaultStickSet
4.9.1. FaultStickSet to Fault
4.10. Body
4.11. Well
4.12. 2D Seismic
4.13. Annotations
4.14. PreStack 3D viewer
5. Menu - Survey
5.1. Select/Setup Survey
5.1.1. Description
5.1.2. Survey selection window
5.1.3. New/Edit Survey setup window
5.1.3.1. Survey Ranges
5.1.3.2. Coordinate settings
5.2. Session
5.3. Import
5.3.1. Import Seismic
5.3.1.1. SEG-Y
5.3.1.1.1. SEG-Y import preparation
5.3.1.1.2. SEG-Y revision
5.3.1.1.3. SEG-Y Examiner
5.3.1.1.4. SEG-Y Import
5.3.1.1.5. SEG-Y scan
5.3.1.2. SEG-Y Pre-stack scanned
5.3.1.3. Simple File
5.3.1.4. Import CBVS Cube
5.3.1.5. GPR: DTZ....
5.3.1.6. Tagged seismic data
5.3.2. Import Horizon
5.3.2.1. Geometry 3D
5.3.2.2. Attributes 3D
5.3.2.3. Geometry 2D
5.3.3. Import Fault
5.3.3.1. Import Fault Ascii3D
5.3.4. Import FaultStickSets
5.3.4.1. Import FaultStickSets Ascii3D
5.3.4.2. Import FaultStickSets Ascii2D
5.3.5. Import Wells
5.3.5.1. From ascii files
5.3.5.1.1. Track
5.3.5.1.2. Logs
5.3.5.1.3. Markers
5.3.5.2. Import Zero-Offset VSP
5.3.5.3. Simple Multi-Well
5.3.6. Import Picksets/Polygon
5.3.7. Import Wavelets
5.3.8. Import Mute
5.3.9. Import velocity functions
5.3.10. Import Cross-plot Data
5.3.11. Import Probability Density Functions
5.4. Export
5.4.1. Seismics
5.4.1.1. SEG-Y
5.4.1.2. Simple File
5.4.1.2.1. Export 2D simple file format
5.4.1.2.2. Export 3D simple file format
5.4.1.2.3. Export Pre-Stack 3D Simple file
5.4.2. Horizons
5.4.2.1. ASCII 3D
5.4.2.2. ASCII 2D
5.4.3. Faults
5.4.4. Picksets
5.4.5. Export Wavelet
5.4.6. Mute
5.4.7. Export Probability Density Functions
5.4.8. Prestack Event
5.5. Manage
5.5.1. Introduction
5.5.2. Attribute Set Management
5.5.3. Manage Faults
5.5.4. Manage FaultStickSet
5.5.5. Horizon file management window
5.5.5.1. Horizon manager 3D
5.5.5.2. Horizon manager 2D
5.5.6. Pickset file management window
5.5.7. Probability Density Functions management
5.5.8. 2D Geometry managment
5.5.9. Seismic file management window
5.5.9.1. 3D Seismics file management
5.5.9.1.1. Copy cube
5.5.9.1.1.1 Volume sub-selection
5.5.9.1.1.2 Format/scaling
5.5.9.1.2. Merge files window
5.5.9.2. 2D Seismics file management
5.5.9.2.1. Manage 2D Seismic lines
5.5.9.2.1.1 Merge 2D lines
5.5.9.2.1.2 Extract 2D attributes from 3D volumes
5.5.9.2.1.3 Export of 2D geometry to GoogleEarth
5.5.9.2.2. Copy lineset
5.5.9.2.3. Dump 2D geometry
5.5.9.3. Browse/Edit Cube Locations
5.5.9.4. Pre-stack seismic manager
5.5.10. Manage Stratigraphy
5.5.11. Wavelet management window
5.5.11.1. Import wavelet
5.5.11.2. Generate synthetic wavelets
5.5.11.3. Statistical Wavelet Extraction
5.5.11.4. Rotate phase
5.5.11.5. Taper a Wavelet in Time or Frequency Domain
5.5.11.6. Merge synthetic wavelets
5.5.12. Well management window
5.5.12.1. Simple Multi-Wells Creation
5.5.12.2. Well Track Editor
5.5.12.3. Checkshot and Time-Depth models
5.5.12.4. Markers Management
5.5.12.5. Logs import
5.5.12.6. Logs creation
5.5.12.7. Logs export
5.5.12.8. Export of well surface positions to GoogleEarth
5.6. Preload
5.6.1. Preload Seismics
5.6.2. Preload Horizons
6. Menu - Analysis
6.1. Attributes
6.1.1. Attribute Set window
6.1.2. Attribute Set toolbar
6.1.3. Auto Load Attribute Set
6.1.4. Default attribute sets
6.1.5. Input selection
6.1.5.1. Input selection for 3D attribute sets
6.1.5.2. Input selection for 2D attribute sets
6.1.6. Import an attribute set from...
6.1.7. Calculate Attributes
6.2. Volume Builder Setup
6.2.1. Horizon-based painter
6.2.2. Body shape painter
6.2.3. Lateral smoother
6.2.4. Smoother
6.2.5. Velocity gridder
6.2.6. Stored Volumes
6.2.7. Voxel Connectivity Filter
6.3. Cross-plot
6.3.1. Cross-plot data extraction
6.3.1.1. Well based data extraction
6.3.1.2. Grid based extraction window
6.3.1.3. Data extraction filters
6.3.2. Cross-plot table
6.3.3. Cross-plot window
6.3.3.1. Cross-plot properties
6.3.3.2. Probability Density Functions (PDFs)
6.3.3.3. Overlay from a third attribute
6.3.3.4. Well-based colour-coding
6.3.3.5. Selection settings
6.4. Tie Well to Seismic
6.4.1. Well-Tie selection window
6.4.2. Well-Tie: Display Panel
6.4.3. Well-Tie: Crosscheck Parameters
7. Menu - processing
7.1. Create Seismic Output
7.1.1. Attribute
7.1.1.1. 2D: Create Lineset output
7.1.1.2. 3D: Create 3D Seismic output
7.1.1.3. Multi-Component outputs
7.1.2. Volume Builder Output
7.1.3. Time - depth conversion
7.1.4. Velocity Conversion
7.1.5. Pre-stack processing
7.1.5.1. Mute
7.1.5.2. Automatic Gain Control
7.1.5.3. Super Gather
7.1.5.4. Angle Mute
7.1.5.5. Velocity correction
7.1.6. Angle mute function
7.1.7. Bayesian Classification
7.1.8. Between Horizons
7.1.9. Along Horizon
7.1.10. Re-Start
7.2. Create Grid Output
7.2.1. Grid
7.2.2. Stratal Amplitude
7.2.3. Isopach
7.3. Madagascar
7.3.1. Madagascar Installation
7.3.2. Madagascar Processing window
7.3.3. Toolbar
7.3.4. Processing input
7.3.5. Madagascar processing output
7.4. Generic Mapping Tools (GMT)
7.4.1. Introduction
7.4.2. Initial Setup
7.4.3. Create Postscript Maps
7.5. Batch Processing
7.5.1. Single machine batch processing window
7.5.2. Multi-machine batch processing window
7.5.3. Batch log file
7.5.4. Cluster processing
8. Menu - Scenes
8.1. Time and Depth converted scenes
8.2. Additional transformed scenes
9. Menu - View
9.1. Work area
9.2. Z-scale
9.3. Stereo viewing
9.4. Toolbars
10. Menu - Utilities
10.1. Settings
10.1.1. Fonts
10.1.2. Look and Feel
10.1.3. Mouse controls
10.1.4. Keyboard Shortcuts
10.1.5. Advanced
10.1.5.1. Personal Settings
10.1.5.2. Survey defaults
10.2. Tools
10.2.1. Batch Programs
10.2.2. Position Conversion
10.2.3. Create Devel. env.
10.2.4. Command Driver
10.3. Plugins
10.4. Show Log File
10.5. Translate
10.6. Install demo license
11. Menu - Help
A. Attributes and filters
Convolve (2D/3D) -- Attribute that returns a filtered response
Delta Resample -- Attribute that enables residual alignment of seismic volumes
Energy -- Response attribute that returns the energy of a trace segment
Event -- Attribute that quantifies an event's shape or distance relative to a next event
Fingerprint -- Attribute that computes the similarity between a user-defined vector of attributes and the equivalent vector taken at each position in a cube.
Frequency -- Response attribute that returns frequency properties
Frequency Filter -- Attribute that returns filtered data using FFT or Butterworth filter types
GapDecon -- Attribute that aims to attenuate repetitions of primary reflections (multiples).
Horizon -- Attribute that enables advanced calculations on horizons
Instantaneous -- Attribute that returns an instantaneous attribute
Match Delta -- Attribute that extracts time shifts between similar events in different seismic volumes
Mathematics -- Attribute that returns the result of a user-defined mathematical expression
Position -- Attribute that returns any attribute calculated at the location where another attribute has its minimum, maximum or median within a small volume.
Prestack -- The pre-stack attribute can be used either to extract statistics on the gathers and their amplitudes, or to extract AVO attributes.
Reference -- Attribute that returns the definitions of the extraction position
Reference shift -- Attribute that moves the extraction position in 3D space
Scaling -- Attribute used for scaling of amplitude
Similarity -- Multi-trace attribute that returns trace-to-trace similarity properties
Spectral decomposition -- Frequency attribute that returns the amplitude spectrum (FFT) or waveletcoefficients (CWT)
Velocity Fan Filter -- Attribute that returns energy with apparent velocities/dips inside a specified Min/Max range.
Volume statistics -- Attribute that returns statistical properties
B. Command Driver Manual
C. SEG-Y checklist
D. Wacom digitizing tablets
Glossary