TDI-Brooks wins survey contract for Delfin LNG deepwater export project offshore Louisiana

Delfin LNG has selected TDI-Brooks as the primary contractor to perform geophysical and geotechnical seabed surveys for its deepwater port project off the coast of Louisiana. The survey program, starting in late August, will generate essential site data to support the first floating LNG export facility in the United States.

Delfin LNG has awarded a prime contract to marine survey firm TDI-Brooks to conduct offshore geophysical and geotechnical investigations for the Delfin Deepwater Port Project situated off the coast of Louisiana. Under the agreement, TDI-Brooks will oversee seabed mapping and soil analysis in collaboration with subcontractor Tolunay-Wong Engineers. Marine operations are scheduled to begin in late August using the research vessel R/V Brooks McCall for geophysical mapping, with geotechnical sampling following in late September. The resulting data will inform structural engineering for the deepwater infrastructure. Delfin LNG is a specialized energy company advancing floating gas liquefaction projects. TDI-Brooks is a maritime firm offering geotechnical and geophysical survey operations. Tolunay-Wong Engineers is a consultancy focused on site characterization and engineering analysis.

This site investigation represents a critical technical milestone for the Delfin project, designed as the first floating liquefied natural gas export terminal in the United States. Located at a brownfield offshore site in the Gulf of Mexico, the facility utilizes existing subsea infrastructure, including the UTOS gas pipeline network, to reduce capital expenditure and environmental footprint. The survey phase provides essential seabed stability and bathymetric data required for structural designs, mooring installation, and marine safety approvals. Validating subsurface conditions is a necessary precursor to deploying floating liquefaction vessels capable of delivering domestic natural gas to global energy markets.

The progression of offshore liquefaction infrastructure signals an operational shift for North American natural gas exports, which have historically depended on onshore coastal facilities subject to land constraints and lengthy permitting workflows. Deploying floating production units at deepwater ports allows developers to bypass land-use bottlenecks while capitalizing on idle offshore pipeline networks. For the broader Gulf Coast maritime sector, the project highlights expanding commercial demand for specialized hydrographic surveying, geotechnical core drilling, and marine engineering services across the energy industry.

For energy market participants and investors, the development offers a capital-efficient model for expanding export capacity. The multi-phase facility targets an ultimate export capacity of 13.2 million tonnes per annum across three floating vessels, with the initial phase targeted at 4.4 million tonnes. Leveraging existing subsea pipelines improves overall project economics against global market volatility. Furthermore, advancing technical milestones brings the facility closer to commercial operations, providing long-term infrastructure opportunities for vessel operators and subsea engineering contractors.