Multi-Component Seismic

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In 1998 PGS acquired multi-component data (P and converted waves) at 18 locations in the deep Gulf of Mexico. Acquisition was completed with a specialized "dragged array" system and PGS is the only company that can acquire P and converted wave significantly beyond the shelf edge.

To date, marine shear wave data have been used to:

• Record high quality images in areas where conventional P wave data are poor as a result of gas chimneys 
• Record higher quality images in areas where the target is located beneath a high velocity layer (e.g., volcanics or salt)
• Define lithology and pore fluid content
• Detect fracture orientation and density.
  

Each Gulf of Mexico site was carefully selected by interpreters to address questions of geologic and exploration interest. A particular focus of the program was to record data over key recent deepwater discoveries and significant deepwater dry holes. With the high cost of deepwater wells, a technology that can improve the drilling success rate will quickly pay for itself.

For each site we have prepared a migrated P section, a migrated converted wave section, the Vp/Vs velocity field, and a report.