TGS has extended its Declaration Multi-WAZ Survey in the Mississippi Canyon and DeSoto Canyon protraction areas of the Gulf of Mexico, the company said in a Feb. 19 release.

The extension represents a minimum 2,000 sq km of additional data to be acquired by CGG using the single pass vessel configuration derived from its StagSeis technology. This technology will better image deep structural elements and improve subsalt and salt flank illumination.

The extension is based on early observations from the fast track migration of phase one of the Declaration project.

The expanded survey is expected to cover the extent of the current Lower Tertiary Norphlet fairway providing industry-leading data for current and future exploration and development objectives, said Kristian Johansen, COO for TGS, in a statement.

Acquisition of the extension is expected to be completed in the second quarter of 2015, followed by fast track deliverables and final imaging products in 2016.