Rock Physics and Biot-Gassmann Equations Models Quiz

What does AVO stand for in seismic analysis?

What is the relationship that AVO is based on?

What is the common point on the reflector between the source and receiver known as?

What describes the angle of incidence and reflection angle being zero in AVO analysis?

What do increasing offset and incidence angles lead to in seismic traces?

What does a seismic CMP gather consist of?

What does the AVO analysis focus on in seismic data?

When did AVO analysis become popular among geophysicists?

Which seismic anomaly is described as an event brighter than others at the same stratigraphic level?

What do the Zoeppritz equations govern in terms of seismic waves?

Which parameter affects the amplitude of reflected events according to Zoeppritz's equations?

What does the velocity of an S-wave depend on?

How does a P-wave affect the rock particles as it propagates through the material?

Why does the bulk modulus K change significantly when the fluid in a rock is changed?

What effect does introducing gas into the pores have on the P-wave velocity of the rock?

How is S-wave velocity affected by a decrease in rock density due to gas saturant?

Why is it important to study both P and S velocities simultaneously?

How can mode conversion be utilized in seismic surveys?

What is one way to record converted S-waves according to the text?

Which method involves interpreting P-wave reflections at different offsets to extract S-wave type information?

What do the Zoeppritz Equations provide a complete theory for?

How do Zoeppritz Equations help extract S-wave type information?

Why is Poisson's ratio significant in distinguishing lithologies?

Which weight in the Aki-Richards equation represents the amplitude at zero angle of incidence?

In which range of angles does the second term in the Shuey approximation start to affect the reflection coefficient?

What are the weights/parameters in the Fatti et al. formulation of the Aki-Richards equation?

Which formulation of the Aki-Richards equation is particularly useful for extracting empirical information about the AVO effect?

What does the Shuey approximation eliminate in favor of using Poisson's ratio?

In the Three term AVO calculation, what do the weights A, B, and C represent?

What is the primary focus of the Fatti et al. formulation of the Aki-Richards equation?

What does the AVO Intercept represent in the context of seismic data analysis?

In AVO crossplotting, what does a data point in the negative intercept and positive gradient quadrant signify?

Which seismic analysis tool combines AVO theory with inversion techniques for enhanced reservoir discrimination?

What do changes in AVO Intercept A correspond to across the layer boundary?

In AVO methodology, which group of methods is applied for a feasibility study to predict AVO responses?

What elastic properties are used in AVO analysis to separate rocks with different types of saturation?

In AVO crossplotting, what do data points in the pink zone signify?

What method uses NMO-corrected gathers with an optimal processing sequence for analyzing AVO attributes?

What does Model A consist of in the context of the text?

How does the presence of gas in sand affect the P-wave velocity compared to shale?

What happens to the density of sandstone with the presence of gas?

In AVO modeling, what are the input well logs used to represent rock properties?

Which AVO attribute is calculated based on regression curves in AVO analysis?

What do Intercept and Gradient represent in AVO attributes?

What is represented by Sigma in the context of rock properties discussed in the text?

In the comparison between two and three term methods in AVO modeling, what is evident about deviation at higher angles?

What does Model B consist of in the context provided?

What kind of boundary does the model used in Zoeppritz equations assume?

Why aren't the Zoeppritz coefficients always completely accurate in explaining real seismic responses?

What did the approximations to the Zoeppritz equations aim to better show?

What are the three contrast variables expressed in the Aki-Richards approximation?

What is the main limitation of the Aki-Richards approximation?

What does a picked event at a given time on the 3 trace angle gather represent?

What is the sum of the three weighted reflectivities in the Aki-Richards linear equation?

In which situation is the Aki-Richards equation much simplified?

What information does the Aki-Richards equation struggle to derive from reflectivity?

What do authors use to create slightly different versions of the Aki-Richards approximation?