U.S. Gulf Coast petrochemical buildout (1940s-1960s)
Postwar American oil and chemical firms built a continuous belt of refineries and crackers from Corpus Christi to New Orleans, anchored on cheap domestic crude and natural gas. Houston Ship Channel alone hosted dozens of plants from Exxon, Shell, Dow, and Union Carbide.
The Gulf Coast became the dominant global chemicals producer for four decades.
Aging infrastructure, environmental constraints, and feedstock cost shifts have steadily eroded its lead—creating the opening Jubail II is built to fill.
The U.S. Gulf shows both the upside and the lifecycle risk of a concentrated petrochemical region. Jubail's planners studied it closely; Jubail's competitors in Texas and Louisiana are watching the expansion warily.
