U.S. Gulf of Mexico (GoM) crude oil output remained down 70%, or 1.29 million bbl/d, according to data released on Aug. 30 by the Department of Interior, as companies continued to return crews to offshore facilities that were evacuated ahead of Hurricane Laura.

A total of 139 platforms or drilling rigs in the U.S. GoM were unmanned at midday on Aug. 30, the department reported, down from the 310 that had been evacuated on Aug. 26.

The Port of Houston, the nation's largest energy export port, was operating normally on Aug. 30. The Ports of Texas City, Galveston, Freeport, and the Gulf Intracoastal Waterway from West Port Arthur Bridge east to High Island Bridge, also resumed normal operations, the Coast Guard said.

Closer to the storm's landfall, the ports of Lake Charles and Cameron and the Calcasieu Waterway, all in Louisiana, remained without power and were closed. The port of Port Arthur, Texas, was open with restrictions, the Coast Guard said.

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The region’s offshore natural gas production remained down 50%, with 1.35 Bcf/d shut in on Aug. 30, as energy producers began to restore output that was halted ahead of Laura.

Offshore Gulf of Mexico wells account for 17% of total U.S. crude oil production and 5% of total U.S. natural gas production.

In addition to the well shut-ins, the storm prompted energy firms to suspend processing at six coastal refineries last week. Those six account for about 12% of U.S. oil processing capacity. Refineries without significant damage also began taking steps to restart operations.