TGS completes GoM surveys

Offshore staff

HOUSTON -- TGS-NOPEC Geophysical Co. (TGS) has completed several new multi-client higher order depth imaging projects that will be used to evaluate hydrocarbon potential in areas of the central Gulf of Mexico prior to the lease sale in March 2009.

TGS has created the industry's first multi-client reverse time migration (RTM) product on the Stanley 3D survey. This migration covers an 8,900-sq km (3,436 sq mi) area in the Green Canyon and Walker Ridge area of the deepwater GoM. Final results of the project have been delivered to the early participating customers.

In addition, TGS has completed an anisotropic Kirchhoff depth migration on its Eastern Mississippi Canyon, Deep Resolve, and Sophie's Link 3D surveys. Anisotropic migration uses well data to calibrate the seismic to the true earth, which provides better positioning and more accurate imaging of the subsurface, the company says.

These new imaging products tie to the existing anisotropic migration that was previously completed in the Mississippi Canyon area. Upon completion of these migrations, TGS now offers 32,000 sq km (1,236 sq mi) of contiguous and seamless anisotropic depth migration in the central GoM. Said projects incorporated over 800 well logs in building the anisotropic model.

01/22/2009