ET E-POSTERS_V1_test1

• Enhanced spectral decompositions (eSD) are
interpretive tools that can be used as both:
•
• Qualitative tool: to delineate different stratigraphic
features (channels geomorphology, barriers and
compartments), structural features (faults, fractures,
karst and dendritic patterns), and a reliable tool for
well projection and geo-steering.
• Quantitative tool: when integrated with other
seismic attributes and geological information to
discriminate specific lithology / fluid type.
•
• Not available in Petrel. Some eSD’s attributes are not
available in third party software.
• Spectral decompositions allow us to view seismic
reflection events in the form of spectral amplitude
maps of specific frequency contents.
• Produce sharp, detailed subsurface images
• Robust tools for Geomorphology analysis
• Reveal hidden stratigraphic features
• Spectral decomposition is a trace by trace inversion
operation that transforms a 1D seismic trace to 2D
time-frequency image of spectral magnitudes.
• The spectral inverse problem (Puryear et. al., 2012)
has been further enhanced and by Exploration
technology to produce spectrally balanced and sharp
maps.
• The new in-house codes produce new spectralrelated
attributes as shown in the workflow below.
•
Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter
eSD provides sharp images of different structural/ stratigraphic features that are
not delineated from seismic amplitude maps alone. Effective tool for well
projecting and geo-steering.
The technology will be deployed as a Petrel plugin that can replace third party
software currently used by PETRONAS.
Puryear, C., Portniaguine, O., Cobos, C., Castagna, J., 2012, Constrained least-squares spectral analysis:
Application to seismic data, Geophysics, 77, 5, 143-167.
©Petroliam Nasional Berhad (PETRONAS) 2014 18
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