Geop 397 - 3D Velocity Cube

Question 1

Why is a 3D velocity cube produced?

Answer 1

After Velocity Analysis, a cube of velocity data is produced for used in NMO correction (1 IL at a time)

Question 2

How are the well velocities calibrated with seismic velocities?

Answer 2

Scaling is used on the seismic processing velocities so that they match the log velocities. Log velocities are the most reliable.

Question 3

How is geostatistics used?

Answer 3

Geostatistics is used to integrate well velocities and seismic processing velocities

Question 4

What is the 3D velocity cube used for?

Answer 4

3D velocity data cube is used for time to depth conversion of seismic data.
V = D/T where T= one way time