Velocity model

Define interval velocities from RMS velocity picks using the Dix equation.

Dix interval-velocity equation

V_int,i = √[(V_rms,i²·t_i − V_rms,i−1²·t_i−1) / (t_i − t_i−1)]

TWT (ms), V_rms (m/s)

Display range

Max TWT (ms)

Max depth: 8583 m

Profile layer labels

TWT–Depth function labels

Layers (6)

Top TWT (ms)

V (m/s)

±V (%)

Top TWT (ms)

V (m/s)

±V (%)

Top TWT (ms)

V (m/s)

±V (%)

Top TWT (ms)

V (m/s)

±V (%)

Top TWT (ms)

V (m/s)

±V (%)

Top TWT (ms)

V (m/s)

±V (%)

Time domain

TWT (ms), increasing downward

1000

2000

3000

4000

5000

Clay (unconsolidated) · 1650 m/s

Coal · 2469 m/s

Shale · 3385 m/s

Sandstone · 4056 m/s

Salt (halite) · 4442 m/s

Depth domain

Depth (m), increasing downward

1751

3502

5253

7004

8755

Clay (unconsolidated) · 1650 m/s

Coal · 2469 m/s

Shale · 3385 m/s

Sandstone · 4056 m/s

Salt (halite) · 4442 m/s

TWT–Depth function

Cumulative depth at each TWT step (one-way depth model).

Reference lines

Layer labels

Converted horizons

Per-layer depths with propagated uncertainty.

Layer	TWT (ms)	V (m/s)	Thickness (m)	Depth (m)	± (m)	Error %
Seawater	0	1500	0.0	0.0	±0.0	0.0%
Clay (unconsolidated)	0	1650	0.0	0.0	±0.0	0.0%
Coal	800	2469	660.0	660.0	±52.8	8.0%
Shale	1600	3385	987.6	1647.6	±131.8	8.0%
Sandstone	2400	4056	1354.0	3001.6	±240.1	8.0%
Salt (halite)	3400	4442	2028.0	5029.6	±402.4	8.0%