Shell said it was also working to use natural gas as a fuel in its own operations, which follows an investment decision in 2011 on a similar corridor in Alberta, Canada.
Shell, which has bet the most heavily of all the top oil firms on a future for cleaner-burning natural gas, said it is using its expertise to make LNG a viable fuel option for the commercial market.
In the Gulf Coast corridor, Shell plans to install the liquefaction unit at its Geismar Chemicals facility to supply LNG along the Mississippi river and intra-coastal waterway and to exploration areas offshore Gulf of Mexico and onshore Texas and Louisiana.