Check out this Overview, which shows a maze of pipes and other equipment at an oil refinery in Corpus Christi, Texas. Due to its position on the Port of Corpus Christi — the fifth largest U.S. port and deepest inshore port on the Gulf of Mexico — much of the city’s economy is driven by the oil and petrochemicals industry. An average of 400,000 barrels of crude oil per day were exported from this port during 2018.