Seismic Reservoir Characterization

Which of the following includes more in the rock physics:

• Understanding the relations between geophysical measurement and rock properties. It is emphasis on the interpretation seismic, sonic and ultrasonic data.

• Interpretation of logs for formation evaluation with more emphasis on well logs to predict water saturation and porosity, and often ignoring sonic logs and seismic.

• Emphasis more on stress regime, faulting and fracture processes.

• All are false.

The present of gas inside the rock specimen leads to decrease:

• Young modulus.

• Compressional velocity.

• Bulk density.

• Shear modulus.

The wave propagating from point to point follows a path of minimum time known as principle of :

• Fermat

• Superposition.

• Huygens

• Refraction and reflection.

Hydrocarbon bearing sand tend to decrease medium compressibility :

• True

• False

Mode of conversion occurs between two interfaces when the seismic ray strikes the boundary. The amplitude and phase conversion quantitatively formulated by :

• Zoeppritz’s equation.

• Castagna’s equation.

• Castagna’s equation.

• Hook’s equation.

Principles underlying the wave propagation are:

• Transmission and reflection principles

• Huygen’s and Fermat’s principles

• Amplitude versus offset principles

• Zoeppritz’s principle

List the AVO classification:

• Class-1: High impedance sand

  Class-2: Low impedance sand

  Class-3: Near-zero impedance contrast

• Class-1: Low impedance sand

  Class-2: Near-zero impedance contrast

  Class-3: High impedance sand

• Class-1: High impedance sand

  Class-2: Near-zero impedance contrast

  Class-3: Low impedance sand

• Class-1: Near-zero impedance contrast

  Class-2: Low impedance sand

  Class-3: High impedance sand

AVO attribute below dedicated to point out the AVO type-3 is :

• Intercept

• Gradient product

• Gradient

• Fluid factor

Low frequency background model is required in the seismic inversion process to remove the wavelet side lobe

• True

• False

List of the main reason to run seismic inversion are shown as below, except:

• Define potential hydrocarbon target

• Guiding on geological model development

• Derive engineering paramete

• Refining dynamic model