Seismic
Time and Depth Imaging STAR Geophysics
incorporates a broad range of imaging technologies into its 2D and 3D seismic
processing services. The offerings include a wide variety of pre-stack
and post-stack migrations in both time and depth domains.Pre-Stack
Time Migration Our most requested
product is 2D or 3D Kirchhoff Pre-Stack Time Migration which is a highly
accurate imaging method applicable to many geologic settings and is most often
performed at Star using the Tsunami Imaging Suite. This world-class time
migration implementation features options for straight or curved ray
algorithms, ETA field input for anisotropic corrections, and an optional
converted wave mode. Our hardware platform for this service is a 128-cpu
Linux Compute Cluster attached to a 14 tB SGI Altix storage server. Large
surveys of over 1000 square miles have been successfully migrated on this
platform. The ability to directly output angle gathers for subsequent AVO
analysis is another distinctive feature of this program.Pre-Stack
Depth Migration
STAR’s
implementation of 3D Kirchhoff Pre-Stack Depth Migration also incorporates the
Tsunami Imaging Suite. Featured in this application is the ability to use
turning waves to image beyond ninety degrees (as with salt overhangs).
Travel-time files are built using a ray-tracer program based on wavefront
reconstruction. Velocity updates for iterative image improvement are
based on tomographic inversion from residual moveout picks of the depth
migrated CRP gathers. Post-Stack
Time and Depth Migration
We also
offer a wide variety of post-stack migrations included in our general seismic
data processing platforms ProMAX 2D/3D and SeisUp. Various methods
including Kirchhoff, Finite-Difference, Phase Shift and Stoldt are available. |
6701
N. BROADWAY EXTENSION SUITE 440 • OKLAHOMA CITY,
OKLAHOMA 73116 • 405-842-3051 • FAX 405-842-3073
