The same sketches on real Volve data
Derived from the Volve dataset: Equinor ASA (operator) and the former Volve licence partners (ExxonMobil, Bayerngas), under the Volve Terms and Conditions, which are based on CC BY 4.0. Credit is kept in every figure; the data shall not be sold, and it is not presented misleadingly. Only small derived extracts are shown, not the volume. Changes, owners and the disclaimer are in NOTICE.txt. Domain TIME and quantity AMPLITUDE are stated by the publisher, polarity is unknown, amplitudes are relative.
A · Rings: three circles about the survey centre
Layers take the name of the interpreted surface they match (for example Utsira top).
B · Cities: the interpreted surfaces
One city per interpreted surface, named from the interpreters' files and ordered shallow to deep.
C · Rings per horizon: five named surfaces, five sites
RMS is not comparable between surfaces, so this is not growth through time.
D · Flow over the Hugin Fm top
Structural highs, lows and saddles of the smoothed surface.
E · Trace shells: 48 traces over the survey
Each trace's analytic signal wound into a shell; colour = instantaneous frequency.
F · Fault constellations on the Hugin Fm top
Stars = picks whose waveform differs from their neighbours'; dashed lines = the interpreters' fault polygons (2014), for comparison.
G · One thread: the whole survey round the Utsira top
All 288,694 traces in file order along one spiral; an 80 ms slab, colour = amplitude.
I · Double exposure: ST0202 (2002) and ST10010 (2010) on one ring
The 2012 time-lapse reprocessing of the base against the monitor, two inks on the same circles as A. The constant offset between the files is found in the quiet 600-1400 ms window and stated.
K · Engraving of what changed: inline 10161
Monitor minus base after the alignment, 600-3200 ms across the Hugin field.
Time or depth? The water-bottom check
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