FMB3 Release
Notes
June, 2009
TGS GEOLOGICAL PRODUCTS AND
SERVICES
Millbank House
171-185 Ewell Road
Surbiton
Surrey KT6 6AP
UK
Tel: +44 (208) 339 4200
Fax:+44 (208) 339 4249
www.tgsnopec.com
FMB3: The New Interactive Facies Map Browser
FMB3 includes all the functionality and strengths of previous versions, but has been
completely revised to incorporate more advanced functionality and innovation, with an
improved workflow and overall performance.
FMB3 is a .Net executable application, and unlike previous versions of the FMB does not
run in Internet Explorer. Java is no longer a core component. These changes have
solved the major instability issues of previous versions.
FMB3 includes a suite of integrated applications that allow you perform a range of
visualisation, manipulation, data analysis techniques and exports in a seamless
environment. These applications include:
Glide
The new interactive map viewer and
spatial data analysis tool for the
FMB. As well as combining the
functionality of the previous FMB,
Glide also offers a range of new and
innovative methods to visualise,
analyse, and export data.
Construct well correlations directly on the
maps.
Export ESRI compatible shapefiles or
georeferenced images.
Drape images (FMB or client
derived) over grids (e.g. TWT,
depth, isopach) and view in 2D or
3D. If necessary, client derived
images and grids can be easily
georeferenced directly within Glide.
Build complex visualisations in an
instant. Depth Structure and
Isopach Grids can be generated on
the fly and displayed in 2D or 3D.
The gridding and contouring
algorithms are fully customisable.
Glide is dynamically linked to a
range of Web Map Services (WMS)
to display TGS and 3rd party (such
as the NPD) culture layers.
Reveal spatial trends by plotting
geologic data in pie charts at the
well location using pre-programmed
queries with advanced
categorization options.
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WellPanel
Display well data in a range of visualisation modes – single wells, multi-well correlations
or burial history reconstructions.
View well data in age or depth mode. Integration of time (Ma) into the data model
allows instant representation of the interpretation as pseudo-Wheeler diagrams of
wellbore cross-sections, enhancing the display of depositional episodes and
tectonic/eustatic gaps.
Time integration also facilitates geohistory reconstructions.
Fully customise the well data display
parameters
Simply export any well data on a wellby-well basis.
The flexible geologic timescale
management system in the database
allows the user to map all geologic ages
to their preferred timescale and sealevel curve data.
Query Tool
Use pre-programmed sophisticated queries
to interrogate any of the FMB data types,
generating valuable outputs within
moments.
Results of queries can be exported or
visualised with a range of integrated tools
(such as Chart Tool and Glide).
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Query results can be categorized adding additional levels of sophistication to the results.
Build and export well lists that meet specific criteria (preservation of particular unit,
existence of log type etc.)
Use the Export Wizard to export Stratigraphy, Lithology, Environments & Facies,
Bathymetry, Wireline (LAS), and Well Header Data. Choose export format and units.
Simple data exports enhance the value of the FMB, allowing TGS data to be readily
ported to proprietary G&G applications.
VSeis (Visual Seismic)
Provides seismic visualisation (SMT Kingdom)
with time converted borehole zonation and
synthetic seismograms to constrain and tie
sequence “models”, particularly in areas of
sparse well control.
Well Audit (Off-Site On-Line)
All the well data examined (subject to copyright and ownership limitations), during the
depositional modelling exercises is scanned and catalogued within this online image
library. OSOL provides an audit trail of background documentation, such as
biostratigraphy, core descriptions, composite logs, well reports etc.
Report Tool
Each of the environmental facies distribution maps presented in the FMB is accompanied
by a report detailing how each of the sequence stratigraphic packages is defined and
identified from the geological and geophysical data, as well as the sediment distribution
across each basin and the controlling factors influencing this distribution.
LogLine+
Direct link to an online global well library of over 5 million logs.
Attribute Analysis of 3D seismic data volumes
The Norwegian seismic attribute data which was included in the 2008 update program
has now been reprocessed and saved in an ESRI compatible format to improve
utilisation. These grids have been saved in filtered and unfiltered versions, and can be
viewed directly in Glide as image overlays or as grids. See Appendix 1 for further
details.
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Appendix 1 - Attribute Analysis of 3D seismic data
volumes
To further enhance the FMB we have derived seismic attributes from selected merged
public 3D volumes. These attributes assist in the mapping of the depositional units, or
resolve with more clarity the faulted structure at any interpreted horizon. These
attributes have been captured for inclusion as digital grids. Georeferenced JPEG images
have also been generated. The surfaces mapped are: Balder, BTU, BCU, Top Brent/Garn
and Rotliegendes. Delivery will include grids for Trace Envelope (Amplitude), Dip of
Maximum Similarity, Similarity, Dip Azimuth and Instantaneous Phase, or Instantaneous
Lateral Continuity as appropriate for the surfaces.
Description of input data and analysis methods
3D merged seismic volumes (Supergrid) were supplied by Landmark for the following
areas: Norway SNS, Norway NNS and Mid-Norway, (see map for location of available
data). It should be noted that the original data sets that had been used to create the
merged volumes were corrected to remove static shifts and overall amplitudes were
matched but they were not wavelet matched and some of the original 3D sub-volumes
had had different amplitude recovery functions applied so that there were still some
phase changes and amplitude changes at boundaries between the original data subvolumes. This has caused a 'footprint' on some of the computed attributes, especially on
the shallower horizons.
The 3D data sets were interpreted at a set of key horizons: Balder, BTU, BCU and
Garn/Brent. Top Rotliegendes was picked instead of the Garn in SNS (S of 57o 40' Lat).
At each horizon the six key attributes were computed using the Rock Solid Attributes
module available in SMT Kingdom.
Description of Attributes
Geometric Attributes:
Similarity (coherence)
Dip of Maximum Similarity
Dip Azimuth
Instantaneous Lateral Continuity
(reflector curvature)
These attributes are based on dip of coherent
events.
They allow a quick visualisation and mapping of
complex fault systems, diapirs, folds, domes and
collapse features.
A combination of attributes can help a
geoscientist better understand deformational
and depositional processes.
Instantaneous Attributes
Based on the model of the seismic signal as a
complex trace consisting of the real part, which
is the signal recorded by the geophone, and
imaginary part (90 degrees out of phase), which
can be computed as the Hilbert transform of the
real part.
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Attribute plots of horizons
The plots represent the distribution of attributes
over picked horizon surfaces.
The attribute plots have been created from a
12.5 x 12.5m grid of seismic data.
The attribute files contain resampled 100 x
100m attribute grids.
Displaying attribute files
The attribute image files or grid files can be
plotted over the FMB with variable transparency
to meet user requirements..
The image files are stored as geo-referenced
jpegs and the attribute files are stored in an
internal grid format.
The attribute grids can be plotted using different
colour bars.
Similarity
A measure of lateral coherence – low values can
indicate fracture zones, high values usually
indicate areas of consistent deposition.
Dip of Maximum Similarity
Good for identifying structural discontinuities
(e.g. faults)
Dip Azimuth (degrees)
Indicative of subsurface horizon shape (e.g.
valleys, channels, ridges). Can also assist in
visualisation of the rotation of fault blocks.
Instantaneous Lateral Continuity
Reflects the instantaneous curvature of seismic
reflections in the in-line and cross-line
directions. Linearly continuous events have zero
curvature. Beds with a hummocky appearance
have non-zero curvature values. Non-reflective
zones will have highly variable curvature values
in time and space. This attribute highlights the
zones of large lateral dip variation; hence it can
be a good indicator of zones affected by small
faults and fractures.
Trace Envelope
Represents the total instantaneous energy of the
complex trace independent of the phase and is
computed as the modulus of the complex trace.
Represents mainly the acoustic impedance
contrast, hence reflectivity that can be related
to:
- Bright spots (e.g. gas accumulations)
- Thin bed tuning.
- Major changes of lithology or depositional
environment.
- Spatial correlation to porosity and other
lithologic variations.
Instantaneous Phase (degrees)
The phase of the complex seismic trace and is
independent of trace amplitudes and can help
map seismic sequence boundaries.
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