Day-2_Quiz

Four levels of petroleum investigation from economic not important to economic very important.

• sedimentary basin - petroleum system - play - prospect

• sedimentary basin - play - prospect - petroleum system

• petroleum system - sedimentary basin - play - prospect

• sedimentary basin - petroleum system - prospect - play

What is objective of seismic interpretation?

• Get detail geological information and use to subsurface imaging

• Provide accountable solution from all available data from regional basin to detail reservoir study

• Enhance resolution to improve subsurface image

• Improve the correlation to well data information

Which one is correct?

• Salt dome trap

• Stratigraphy trap

• Combination trap

• Structural trap

Which one the incorrect statement about petroleum system?

• Only primary migration pathway filling to trapped reservoir rock

• 6 elements of petroleum system : HC source rock, migration pathway, reservoir rock, seal rock, trapping, and preservation

• Some geological structures are conductive to accumulation of oil

• Accumulation of oil is related to effective petroleum system

Which data can perform calibrated analysis? ( 2 answers)

• only sonic data

• only checkshot data

• sonic and density logs

• VSP data

Why we perform calibrated analysis? (2 answers)

• to identify correct seismic event that relates to reservoir

• to have good tie both seismic time domain and well data

• to correct resolution from seismic and well data

• to pick geological marker in seismic data

What is wavelet?

• The input of earth model

• The signal that would appear in seismic trace and only have one reflecting interface

• The signal to correlate seismic and well marker

• The signal which has full broadband

What is acoustic impedance?

• product of density and velocity which same all different rock layers

• product of well data

• product of density and seismic velocity

• product of seismic processing

Which one has the highest level of uncertainty?

• Horizon interpretation

• Stacking velocity

• Well marker

• Checkshot/VSP

What is loop tying interpretation technique?

• Enhance both vertical and horizontal seismic resolution

• Improve resolution of grid map

• Correlate horizon and well marker data

• Correlate horizons and faults in a geological reasonable information