WesternGeco Expands Wide-Azimuth Surveys in the Gulf of Mexico

WesternGeco has expanded its multiclient wide-azimuth (WAZ) survey in the U.S. Gulf of Mexico as a result of underwriter demand for high-quality subsalt imaging and optimized data resolution.

The E-Octopus project is in its third phase of acquisition and WesternGeco will add a fourth phase in November 2007 with a fifth phase in early Q1 2008. These WAZ surveys offer the unique advantage of more precise base and edge of salt definition through the integration of magnetotellurics, gravity and Q-Marine* data through MMCI* multimeasurement constrained imaging.

"We are currently conducting targeted magnetotelluric surveying in the most challenging imaging areas for all phases of the E-Octopus program," said Aaron Gatt Floridia, vice president, WesternGeco Electromagnetics. "Previous pilot studies using marine magnetotellurics (MT) have successfully indicated salt thickness variation. Based on these results, we are offering the addition of integrated MT measurements as part of our WAZ service. This technology step-change and the project expansion will greatly improve the critical base salt and subsalt images required by our clients."

The E-Octopus project, the first multiclient wide-azimuth program in the Gulf of Mexico, commenced in July 2006. Since then, over 700 OCS blocks of wide-azimuth data have been acquired. The third phase of acquisition began in May 2007, which covers more than 450 OCS blocks of the highly prospective Green Canyon area in the Gulf of Mexico. To date, greater than 45% of the survey area has been acquired. In response to client demand, a second Q-vessel WAZ fleet will arrive in November 2007 to begin additional acquisition in the Gulf of Mexico.

WesternGeco has also developed the world's first onboard prestack wave-extrapolation (WEM) depth migration in the third phase of E-Octopus through the use of its proprietary Q-Xpress* technique, providing quick-look migrated data volumes for interpretation, quality control, illumination and in-fill acquisition requirements. The final deliverables for these surveys will include the latest state-of-the-art technologies such as anisotropic multi-azimuthal tomography, wavefield extrapolation demultiple and shot domain WEM with angle gathers.

The E-Octopus project is a member of the WesternGeco family of multiclient E-surveys that utilize advanced acquisition and processing technologies. The WesternGeco suite of geophysical applications includes electromagnetics services and Q-Technology*, the world's only single-sensor high-fidelity seismic acquisition-to-inversion platform.

For More Information on the Offshore Rig Fleet:
RigLogix can provide the information that you need about the offshore rig fleet, whether you need utilization and industry trends or detailed reports on future rig contracts. Subscribing to RigLogix will allow you to access dozens of prebuilt reports and build your own custom reports using hundreds of available data columns. For more information about a RigLogix subscription, visit www.riglogix.com.

Our Privacy Pledge

Most Popular Articles

From the Career Center
Jobs that may interest you
United States Sonora: Operator, Plant-Multi-Chem, I
Expertise: Geoscience Technician
Location: Sonora, TX
United States Sonora: Operator, Plant-Multi-Chem, I
Expertise: Geochemist
Location: Sonora, TX
Senior Client / Program Manager
Expertise: Geologist|Reservoir Engineering
Location: Seattle, WA
search for more jobs

Brent Crude Oil : $49.98/BBL 1.59%
Light Crude Oil : $49.18/BBL 1.56%
Natural Gas : $2.73/MMBtu 1.44%
Updated in last 24 hours