Podcast
Questions and Answers
What is the purpose of building a low frequency model in seismic inversion?
What is the purpose of building a low frequency model in seismic inversion?
- To recover absolute acoustic impedance (correct)
- To identify the frequency spectrum of seismic data
- To improve the resolution of seismic images
- To determine relative impedances between layers
Why are low frequencies important in seismic inversion?
Why are low frequencies important in seismic inversion?
- They allow for the calculation of relative impedances
- They help determine the frequency spectrum of seismic data
- They improve the interpretation of seismic horizons
- They enable the recovery of absolute acoustic impedance (correct)
What do acoustic impedance logs contain that seismic data lacks?
What do acoustic impedance logs contain that seismic data lacks?
- Stratigraphic framework
- Full frequency spectrum (correct)
- Relative impedances
- Low-frequency trends
Which step is NOT involved in creating a Low Frequency Model?
Which step is NOT involved in creating a Low Frequency Model?
Why can only relative impedances be determined without low frequencies in seismic data?
Why can only relative impedances be determined without low frequencies in seismic data?
What role does a low-frequency model serve as in the Model Based inversion process?
What role does a low-frequency model serve as in the Model Based inversion process?
What is the reason for only relative impedances being determined without a low-frequency model?
What is the reason for only relative impedances being determined without a low-frequency model?
How can the issue of spurious or non-calibrated data be addressed?
How can the issue of spurious or non-calibrated data be addressed?
What must be consistent with the geological context?
What must be consistent with the geological context?
When is seismic interval velocity included in the Low Frequency Model?
When is seismic interval velocity included in the Low Frequency Model?
What does including a low-frequency model allow in terms of acoustic impedance recovery?
What does including a low-frequency model allow in terms of acoustic impedance recovery?
How are seismic velocities integrated in the creation of a Low Frequency Model?
How are seismic velocities integrated in the creation of a Low Frequency Model?
What is a key consideration when building a good low frequency model?
What is a key consideration when building a good low frequency model?
In Low Frequency Model creation, what is the purpose of determining the structural or stratigraphic grid framework?
In Low Frequency Model creation, what is the purpose of determining the structural or stratigraphic grid framework?
When interpolating low-frequency well data between consecutive horizons, what should be considered if the seismic events are parallel to the base horizon?
When interpolating low-frequency well data between consecutive horizons, what should be considered if the seismic events are parallel to the base horizon?
How can we estimate the low frequency needed in the Low Frequency Model?
How can we estimate the low frequency needed in the Low Frequency Model?
What is the main purpose of applying a low pass filter to seismic sections?
What is the main purpose of applying a low pass filter to seismic sections?
Why is it necessary to establish a well-defined structural grid in Low Frequency Model building?
Why is it necessary to establish a well-defined structural grid in Low Frequency Model building?
Which step is NOT involved in creating a Low Frequency Model?
Which step is NOT involved in creating a Low Frequency Model?
Why are decisions needed regarding extrapolation above the shallowest log point and below the deepest log point when building a Low Frequency Model?
Why are decisions needed regarding extrapolation above the shallowest log point and below the deepest log point when building a Low Frequency Model?
What is a key consideration when using seismic velocities as an external drift?
What is a key consideration when using seismic velocities as an external drift?
In the context of interpolation methods, what does Kriging rely on to control spatial correlation?
In the context of interpolation methods, what does Kriging rely on to control spatial correlation?
What is a variogram used for in geostatistics?
What is a variogram used for in geostatistics?
What do isotropic variograms have in common?
What do isotropic variograms have in common?
Why is it important to choose variogram parameters based on geology and structures?
Why is it important to choose variogram parameters based on geology and structures?
What should be checked before inversion to ensure the final result depends greatly on the initial model?
What should be checked before inversion to ensure the final result depends greatly on the initial model?
What is the primary function of Low Frequency Model interpolation?
What is the primary function of Low Frequency Model interpolation?
Which factor influences the choice between isotropic and anisotropic variograms?
Which factor influences the choice between isotropic and anisotropic variograms?
'Collocated co-kriging' uses which type of variable as a trend in interpolation?
'Collocated co-kriging' uses which type of variable as a trend in interpolation?
'Inverse distance interpolation' and 'Kriging' are common techniques for what process?
'Inverse distance interpolation' and 'Kriging' are common techniques for what process?
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