Interpretation with Seismic Attributes
Assessment Interpretation with Seismic Attributes
1. AVO analyzes changes in the amplitude of seismic waves that are dependent on __________ distance, and relates to __________ seismic attributes for hydrocarbon discrimination.
2. The coherence algorithm is used to enhance ___________ in 2D and 3D data.
3. In terms of computational calculations, seismic attributes can be classified into which of the following categories? (Select all that apply.)
A .Physical attributes
B .Geometric attributes
C .Instantaneous attributes
D .Wavelet attributes
E .Chemical attributes
4. The magnitude of Class 4 sand reflection coefficients __________ with ___________ angle of incidence.
5. What type of coefficients for seismic trace similarity are calculated in a grid using a nine-trace operator?
A .Coherence
B .Derivative
C .Semblance
D .Instantaneous
6. Which attributes play a significant role in rock and lithology interpretation? (Select all that apply.)
A .Instantaneous phase
B .Transmissive attributes
C .Reflection strength
D .Instantaneous frequency
7. What is the instantaneous amplitude attribute often used to identify?
A .Pinchouts
B .Magnetic anomalies
C .Faults
D .Amplitude anomalies
8. AVO analysis based equations define a relationship between the _________ of reflection of a seismic wave and the angle of incidence.
9. Which derivative of the trace envelope shows the variation of the energy of the reflected events and can be used to detect possible fracturing and absorption effects?
A .Fourth
B .First
C .Second
D .Third
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