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Good digital 3D modeling can increase
situational awareness and support superior
decisions. Our participation
in such processes is to accurately record and
register disparate data sources in
3D.
Example,
Gravimetric Data Restoration (via
Interpolation)
In this case, a customer provided us with a
paper map containing a myriad of geophysical themes
and a request to extract the gravity contours.
We implemented the following procedure
...
- The map was
scanned and geo-referenced.
- Gravity contours were
quickly, (roughly), traced and
attributed with mGal values.
- Vertices from
the traced lines were densified.
- The densified
vertices were input to a parametric
Gausian Kriging interpolation routine that produced
a ESRI Grid raster.
- Finally, smooth
attributed contours were programatically generated
from the raster.
View Results Here
Example,
Seismic Data
Integration
Here, a customer provided us with
images of seismic data to be referenced to a 3D
coordinate system and integrated with other disparate
forms of geospatial data covering the customer's
area of interest. We implemented the
following procedure ...
- Digitally scanned
the seismic data. Overlaid
the seismic images with a new ESRI Grid raster
data model layer and assigned integer
values to sub-surface depths indicated by
seismic and ancillary data to establish control over
the vertical component of the coordinate
system.
- Horizontal
transect development used the Shot Point
location data.
- Extracted
Horizon and Fault data from the seismic
data.
- Registered the
extracted data with the Shot Point data.
- Programatically populated
the extracted data with depth attributes
from the grid.
- Display the
resulting geologic structure with line-symbology
control in a 3D coordinate system.
Example, Sedimentary
Bedding-Structure
Surface-Mapping
Here, a customer needed
to verify the closure of an alleged anticline
that would be necessary to trap ancient
hydrocarbon seepage. In the field,
exposed sedimentary rock outcrops were sought and
measured using brunton compass and GPS
devices. In the office, custom scripts
were developed to execute trigonometric
functions on Strike and Dip values with the
location data to generate 3D
polygons.
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