1. Seismic Reflections Lecture 6 - + Shot Receiver Seismic Record
Layer 1
Layer 2
Layer 3
Layer 4
Impedance = Velocity * Density
Seismic Record -
Trough +
Peak
Layer 1
Impedance
Increase
Layer 2
Travel Time (2 way) in msec
SLIDE 1
This unit goes into some more detail on what causes a seismic reflection and the characteristics of the seismic response
In other words, what do the “peaks” and “troughs” on a seismic section mean
No need to explain this figure – will be covered in the lecture
Layer 2
Impedance
Decrease
Layer 3
Layer 3
Impedance
Increase
Layer 4
Peak over Trough is an
Increase in Impedance
Courtesy of ExxonMobil
L 6 – Seismic Reflections