ATTRIB3D®
Seismic attribute calculation
ATTRIB3D computes post-stack seismic attributes. Originally developed under the sponsorship of the Seismic Attributes Consortium, ATTRIB3D is available to LFP members or as "Rock Solid Attributes" within the Kingdom Suite from Seismic Micro Technology
There are a total of 78 Attributes and they are catagorized as instantaneous, wavelet, geometrical and gabor morlet. As of June 2007 the curvature attributes indicated by an * are only available to LFP members.
Seismic attributes are essential interpretation tools and ATTRIB3D allows the user to select from a wide range to meet every interpretation need:
ATTRIB3D Seismic Attributes
- INSTANTANEOUS ATTRIBUTES
- Real part of complex trace
- Imaginary part of complex trace
- Trace envelope
- Time derivative of the envelope
- Second derivative of envelope
- Instantaneous phase (between ± 180 degrees)
- Instantaneous frequency
- Envelope weighted instantaneous frequency (Hz)
- Thin bed indicator
- Acceleration of phase (cycles/sec/sec)
- Dominant frequency (cycles per second)
- Band width (given in octaves)
- Instantaneous Q factor
- Normalized amplitude (cosine of the instantaneous phase)
- Envelope amplitude modulated phase
- Relative acoustic impedance
- WAVELET ATTRIBUTES
- Wavelet envelope
- Time derivative of the wavelet envelope
- Second derivative of wavelet envelope
- Wavelet phase (between ± 180 degrees)
- Wavelet frequency
- Envelope weighted wavelet frequency (Hz)
- Acceleration of phase (cycles/sec/sec)
- Dominate frequency (cycles per second)
- Band width (given in octaves)
- Wavelet Q factor
- Apparent polarity of wavelet
- GEOMETRICAL ATTRIBUTES
- Event Continuity
- Sand/Shale Ratio
- Chaotic Reflection
- Parallel Bedding Indicator
- Zone of Unconformity
- Dip of maximum similarity
- Dip Variance (average-local)
- Similarity
- Smoothed Similarity
- Similarity Variance (average-local)
- Smoothed dip of maximum similarity
- Instantaneous dip
- Instantaneous lateral continuity
- Dip azimuth
- Upper Bed Thickness (msec)
- Upper Amplitude of Max Bed Thickness
- Upper Morphology
- Middle Bed Thickness (msec)
- Middle Amplitude of Max Bed Thickness
- Middle Morphology
- Lower Bed Thickness (msec)
- Lower Amplitude of Max Bed Thickness
- Lower Morphology
- Mean Curvature *
- Maximum Curvature *
- Minimum Curvature *
- Gaussian Curvature *
- Most Negative Curvature *
- Most Positive Curvature *
- Dip Curvature *
- Strike Curvature *
- GABOR-MORLET ATTRIBUTES
- Envelope of Sub Bands
- Phase of Sub Bands
- Trace of Sub Bands
- Spectral Balance
- Band limited Relative Acoustic Impedance
- Mean Frequency of Spectra
- RMS Frequency of Spectra
- Band Width of Spectra
- Skewness of Spectra
- Kurtosis of Spectra
- Maximum Subband of Envelope
- Frequency of Maximum Subband Envelope
- Phase of Maximum Subband Envelope
- Q by Frequency Shift
- Q by Spectral Ratio
- Anomalous Absorption
- High Absorption Low Impedance
- High Absorption High Impedance
- Low Absorption Low Impedance
- Low Absorption High Impedance