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Petrel 2016.2: Spectral Analysis Tool
Surender Manral, Product Champion, Petrel Geophysics
Ivan Salazar, Senior Reservoir Geophysicist
Spectral Analysis Tool
 Rapid and intuitive seismic frequency analysis
Near Angle Stack
Mid Angle Stack
Far Angle Stack
 Spectral Analysis Tool (SAT) is available in Petrel 2016.2
 Extending Inspector spectrum capabilities for detailed spectral analysis through SAT
 Spectral Analysis Tool is enabled with any of following license:
– Geoscience Core + Seismic Interpretation
– Combined Core + Seismic Interpretation
– Geophysics Core
 Spectral Analysis Tool is available for basic seismic interpretation, attribute analysis and
advance quantitative interpretation workflows
Spectral Analysis Tool
 Time domain supported data types:
– 2D Seismic lines
– 3D Seismic Cubes
– Cropped Volumes
– Virtual Attributes
– Inline / Xline
– Random line
Spectral Analysis Tool
2D lines with specific
frequency
 Supports frequency spectrum for arbitrary polyline
 Multiple frequency spectrum display from multiple
cubes or intersections
 Spectrum from multiple 2D lines can be displayed
 Crop volume can be used to define a VOI
 Spectrum will update once crop volume is moved
Spectral Analysis Tool
Frequency Spectrum of Arbitrary Polyline
Arbitrary Polyline
 Fast Fourier Transform for calculating the frequency power spectrum
 Flexible taper controls
– Bartlett
– Cosine
– Hamming
– Hanning (Raised-Cosine)
– Papoulis
 Define AOI & VOI using a crop volume
Spectral Analysis Tool
Crop Volume
Frequency Spectrum of Crop Volume
 Create, save, delete or analyze different scenarios
using the ‘case’
 Dynamic update of spectrum using the ‘Auto update’
feature
 Interactive read out (frequency and power), magnify a
selected area, pan etc.
 Output as a spread sheet using the ‘Copy active
spectrum to clipboard’
 Launch SAT from 3D Window, Interpretation Window,
Well Section Window, Input pane
Spectral Analysis Tool
1. Create case
2. Rename, delete or navigate
3. Auto-update
4. Tapers
5. Magnify
6. Copy bitmap
7. Copy values from active spectrum
8. Read-outs
Frequency Spectrum of Wedge Models
Spectral Analysis Tool
Synthetic Data
Wedge synthetic
Filtered Wedge synthetic (Filter: 05,12,50,100)
Spectral Analysis Tool
Synthetic Data
Frequency Decomposition of the Wedge Model using GSD
Wedge synthetic
RGB Blended Wedge (10Hz, 20Hz, 30Hz)
Frequency spectrum of Xline
 Spectral analysis is key for numerous workflows
– Prestack Interpretation workflows
– 4D Seismic workflows
– Spectral Decomposition
– Attribute Analysis
Spectral Analysis Tool
 Prestack Interpretation workflows
– Generation of angle stack is critical for
inversion workflows
– SAT allows user a careful analysis of
frequency content of individual stacks
– Analyze the impact of prestack data
conditioning on frequency content of the
angle stacks
Spectral Analysis Tool
SpectralAnalysisTool_6947882_01_6947882_01.pptx

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SpectralAnalysisTool_6947882_01_6947882_01.pptx

  • 1. Petrel 2016.2: Spectral Analysis Tool Surender Manral, Product Champion, Petrel Geophysics Ivan Salazar, Senior Reservoir Geophysicist
  • 2. Spectral Analysis Tool  Rapid and intuitive seismic frequency analysis Near Angle Stack Mid Angle Stack Far Angle Stack
  • 3.  Spectral Analysis Tool (SAT) is available in Petrel 2016.2  Extending Inspector spectrum capabilities for detailed spectral analysis through SAT  Spectral Analysis Tool is enabled with any of following license: – Geoscience Core + Seismic Interpretation – Combined Core + Seismic Interpretation – Geophysics Core  Spectral Analysis Tool is available for basic seismic interpretation, attribute analysis and advance quantitative interpretation workflows Spectral Analysis Tool
  • 4.  Time domain supported data types: – 2D Seismic lines – 3D Seismic Cubes – Cropped Volumes – Virtual Attributes – Inline / Xline – Random line Spectral Analysis Tool 2D lines with specific frequency
  • 5.  Supports frequency spectrum for arbitrary polyline  Multiple frequency spectrum display from multiple cubes or intersections  Spectrum from multiple 2D lines can be displayed  Crop volume can be used to define a VOI  Spectrum will update once crop volume is moved Spectral Analysis Tool Frequency Spectrum of Arbitrary Polyline Arbitrary Polyline
  • 6.  Fast Fourier Transform for calculating the frequency power spectrum  Flexible taper controls – Bartlett – Cosine – Hamming – Hanning (Raised-Cosine) – Papoulis  Define AOI & VOI using a crop volume Spectral Analysis Tool Crop Volume Frequency Spectrum of Crop Volume
  • 7.  Create, save, delete or analyze different scenarios using the ‘case’  Dynamic update of spectrum using the ‘Auto update’ feature  Interactive read out (frequency and power), magnify a selected area, pan etc.  Output as a spread sheet using the ‘Copy active spectrum to clipboard’  Launch SAT from 3D Window, Interpretation Window, Well Section Window, Input pane Spectral Analysis Tool 1. Create case 2. Rename, delete or navigate 3. Auto-update 4. Tapers 5. Magnify 6. Copy bitmap 7. Copy values from active spectrum 8. Read-outs
  • 8.
  • 9. Frequency Spectrum of Wedge Models Spectral Analysis Tool Synthetic Data Wedge synthetic Filtered Wedge synthetic (Filter: 05,12,50,100)
  • 10. Spectral Analysis Tool Synthetic Data Frequency Decomposition of the Wedge Model using GSD Wedge synthetic RGB Blended Wedge (10Hz, 20Hz, 30Hz)
  • 12.
  • 13.  Spectral analysis is key for numerous workflows – Prestack Interpretation workflows – 4D Seismic workflows – Spectral Decomposition – Attribute Analysis Spectral Analysis Tool
  • 14.  Prestack Interpretation workflows – Generation of angle stack is critical for inversion workflows – SAT allows user a careful analysis of frequency content of individual stacks – Analyze the impact of prestack data conditioning on frequency content of the angle stacks Spectral Analysis Tool