In the Houston area, the shipping situation was less clear, according to IHS Markit. Beaumont and Port Arthur were still closed as of the end of 4 Sept, and the Houston ship channel was open, but with restrictions.
According to the Coast Guard, Galveston and Texas City are open, the report said.
As of 5 Sept, the volume of Gulf of Mexico crude oil production shut-in (reduced because of Hurricane Harvey) was 121,000 barrels per day, or about 7% of total Gulf production, IHS Markit said.
"The Labor Day weekend brought nothing but good news for the US refining sector," the report said. "At least two of the 20 affected refineries (Valero's Corpus Christi and Texas City plants) were officially at 'normal' run rates yesterday (5 Sept), with several others projected to join them in the next 48 hours."
Chemical production remained heavily affected by the storm, according to IHS Markit. Some 54% of ethylene production and 41% of propylene production remained offline, it said.
"We also expect to see additional delays develop with regard to the new (polyethylene) production capacity scheduled to start up during the third and fourth quarters of this year," the report said.
Polypropylene supply levels range from 70 to 100% for the month of September, it said.
Meanwhile, the ExxonMobil Baytown refinery was entering into a restart, while Marathon Galveston Bay is ramping up production rates after narrowly avoiding a shutdown, IHS Markit said.
"That should put the market at ease, as each refinery accounts for nearly 10% of US benzene capacity," it said.
