Norway’s TGS and US company Schlumberger have commenced the Dual Coil Shooting multivessel full-azimuth acquisition surveys in the Gulf of Mexico.

The Revolution XII and XIII surveys covering about 7,150km² in the Green Canyon, Atwater Valley and Ewing Bank protraction areas will be acquired using the Schlumberger WesternGeco Q-Marine point-receiver marine seismic system along with multivessel, Dual Coil Shooting acquisition technique.

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These new surveys will record offsets of over 14km for imaging below the salt in the deepwater Gulf of Mexico.

"The combination of TGS and Schlumberger’s technologies is set to improve illumination and imaging of the sub-salt, as well as other complex geologic features in the region."

TGS CEO Kristian Johansen said: “Our cooperation started in 2008 with the acquisition of the Freedom WAZ survey and was followed later by the Liberty WAZ and Patriot M-WAZ surveys.

“The Revolution XII and XIII surveys benefit from the latest advances in seismic technology and will provide the E&P industry with critical information to support exploration and drilling activity in a region that is expected to remain a priority for our customers.”

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In order to conduct these Revolution surveys, autonomous marine vehicles (AMV) are being deployed, which will simultaneously acquire ultra-long offsets of more than 20km.

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The combination of TGS and Schlumberger’s technologies is set to improve illumination and imaging of the sub-salt, as well as other complex geologic features in the region.

Acquisition of data is expected in the first quarter of next year and final processed data should be available in early 2018.

WesternGeco president Maurice Nessim said: "With these new techniques, we expect to see further improvements in sub-salt imaging and amplitude fidelity for reservoir characterization providing value for our customers.”