TDI-Brooks, College Station, Texas, has completed a geotechnical site investigation in Alaska’s Cook Inlet to support development of the proposed Cook Inlet LNG project.
The work involved an anchor site characterization study using TDI-Brooks’ Neptune N5K cone penetration testing system. The company completed 16 CPTs in water depths ranging from 10 to 25 meters, collecting subsurface soil data intended to support selection of anchors for the project.
Cook Inlet LNG plans to import liquefied natural gas using a floating storage and regasification unit that would be moored alongside existing offshore infrastructure in Cook Inlet. The developer has identified the vessel’s mooring system as one of the principal pieces of new infrastructure required for the project.
The project entered the Federal Energy Regulatory Commission’s pre-filing process in June 2026 and is targeting first gas in mid-2029. The pre-filing process allows environmental review and consultation to begin ahead of a formal project application.
TDI-Brooks conducted the geotechnical work aboard the R/V Poseidon, a third-party vessel already operating in the region.
Melissa Wood, director of business development, sales and marketing at TDI-Brooks, said the company used Poseidon because none of its own research vessels were working in Alaska at the time.
The arrangement allowed TDI-Brooks to mobilize its portable N5K system aboard an available regional vessel rather than bringing one of the company’s vessels into Cook Inlet.
The Neptune N5K is part of TDI-Brooks’ line of portable geotechnical systems designed for deployment from different vessel platforms. Cone penetration testing measures soil resistance as a probe is pushed into the seabed, providing data used to characterize subsurface conditions for offshore engineering and infrastructure projects.
TDI-Brooks did not disclose the results of the Cook Inlet testing or specific subsurface conditions encountered during the campaign.
