Seismic Attributes
Instantaneous, Dip, Azimuth
Seismic Attributes
An attribute is necessarily a derivative of a basic seismic
measurement.
All the horizon and formation attributes available are not
independent of each other but simply different ways of
p

Impedance, Reflectivity, & Amplitude
Frequencies, Periods,
Wavelengths, and Wavenumbers
Period T is the time of
repetition of a periodic wave,
the time for a wave crest to
travel one wavelength
Frequency f - is the
repetition rate of the periodic
wave,

Curvature
Curvature - Osculating circle
In differential geometry of curves,
the osculating circle of a sufficiently
smooth plane curve at a given
point p on the curve has been
traditionally defined as the circle
passing through p and a pair of
additional

Volume curvature
Volume curvature attributes are geometric attributes
computed at each sample of a 3D seismic volume from local
surfaces fitted to the volume data in the region of the sample.
The curvature attributes respond to bends and breaks in
seism

Quantitative Amplitude Analysis
Minimum Phase, Zero Phase, Linear Phase
Figure shows four waveforms which
have the same amplitude spectrum
but different phase spectra.
Figure (a) is zero phase, recognized
by the symmetry about the maximum
at t = 0; it is

Volumetric Dip and Azimuth
Study conducted to compare multi window estimates of
volumetric dip with conventional dip maps made from
interpreted horizons from survey acquired in the Fort Worth
Basin, Texas, U.S.A., and examine two horizons Pennsylvanian-a

Opendtect
Instantaneous
Name
Instantaneous - Attribute that returns a value at a single sample location.
Description
Instantaneous attributes are computed sample by sample, and represent instantaneous
variations of various parameters. Instantaneous values