TGS is to extend its Declaration Multi-WAZ (wide azimuth) Survey in the Mississippi Canyon and DeSoto Canyon protraction areas of the central US Gulf of Mexico.
The extension represents a minimum 2000sq km of additional data to be acquired by CGG using the single pass vessel configuration derived from its StagSeisTM technology, with offsets to 16km.
The technology will better image deep structural elements and improve subsalt and salt flank illumination, says Norway-based TGS. The extension is based on early observations from the fast track migration of phase one of the Declaration project.
Kristian Johansen, COO for TGS says: "Expanding the survey to cover the extent of the current Lower Tertiary Norphlet fairway will provide industry-leading data for current and future exploration and development objectives."
The Declaration survey was originally due to cover 6061sq km (260 OCS blocks) in the Mississippi Canyon and Viosca Knoll areas. The survey areas are orthogonal to TGS' Justice WAZ 3D survey.
Acquisition started in October 2014, using five vessels from the CGG fleet. Acquisition of the extension is expected to be completed in Q2 2015, followed by fast track deliverables and final imaging products in 2016.
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