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PRESS
RELEASE:
Velocity analysis using angle-domain
common image gathers patent issued to 3DGeo. Santa Clara,
CA (April 8, 2003).
3DGeo Inc., provider
of seismic imaging software and services to the oil and gas
industry, announces today that it was issued Patent No. 6,546,339,
Velocity analysis using angle-domain common image gathers,
by the United States Patent and Trademark Office.
“This patent covers a key
technology that is ultimately critical to delivering the best
possible image to our customers. Building the velocity model
in a manner consistent with the migration engine is perhaps
the most important aspect of seismic imaging.”
– Dimitri Bevc, 3DGeo Chairman and President.
Patent Abstract
Migration velocity analysis is performed using Angle-Domain
Common Image Gathers (ACIGs). When the correct velocity model
is employed for migration, all ACIG events corresponding to
a subsurface location are aligned along a horizontal line.
Residual moveout can be performed on each ACIG with a suite
of trial residual velocity values, according to an angle-domain
residual moveout equation. A best-fit residual velocity value
that leads to horizontally-aligned events upon moveout can
be selected by generating a distribution of semblance (amplitude
summed over a given depth) over residual velocity. Best-fit
residual velocity values corresponding to selected subsurface
points can be employed to update the initial velocity model
using a vertical update, normal ray update, or tomographic
update method.
About 3DGeo:
3DGeo Inc. (3DGeo) is a leading provider of advanced
imaging services and software for the oil and gas industry.
3DGeo helps oil and gas companies visualize 3-D earth structures
and reduce the drilling risk associated with oil and gas exploration.
Companies that use 3DGeo’s services lower the cost of
production, provide faster delivery of oil and gas to the
marketplace, and tap oil and gas from ever more challenging
plays.
3DGeo is a privately-owned
company with Headquarters in Santa Clara, CA.For
more information contact 3DGeo at info@3dgeo.com
For more information,
contact:
Dimitri Bevc, (408) 450-7840, dimitri@3dgeo.com
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