Harbour Energy subsidiary LLOG Exploration Co. has awarded Subsea7 a contract covering fabrication and installation services for the Who Dat East development in the US Gulf.
The Who Dat East project, located in lease MC 509-1 in about 1,300 m of water, will be tied back to the existing Who Dat floating production facility, illustrating the continued role of subsea tiebacks in extending the life of existing deepwater infrastructure while reducing costs compared with standalone developments.
Subsea7’s responsibilities will include fabrication, transportation and installation of a 29-km steel catenary riser and pipe-in-pipe to the Who Dat floating production platform, and installation of an umbilical and subsea controls.
Project management and engineering will take place at the company’s offices in Houston, with offshore activities set to get underway in 2028.
The award reflects continued operator interest in lower-capital Gulf of Mexico developments that can leverage existing production hubs, export routes and subsea infrastructure.
The Who Dat East project is operated by LLOG Exploration (40%), alongside partners Karoon USA (40%) and Westlawn Americas Offshore (20%). The joint venture approved the project's final investment decision (FID) last month.
