Operators evacuated 130 Gulf platforms and rigs and shut in about 1.3 million barrels a day for Isaias

Operators in the Gulf of Mexico had evacuated or moved 130 production platforms and rigs by Thursday, October 8, 2026, and had shut in about 1.3 million barrels a day of crude oil as Hurricane Isaias closed on the Gulf Coast. Those are the Energy Information Administration’s figures, drawn from the federal offshore regulator’s tally for that single day. They describe a precaution that was still growing on October 8, not the storm’s peak and not a permanent loss of output.

Evacuation mechanics: 121 platforms, 5 rigs and 4 moved rigs

The count comes from the federal offshore regulator’s tally for that Thursday. It breaks down into 121 production platforms evacuated, five non-dynamically positioned drilling rigs evacuated and four dynamically positioned rigs moved out of the storm’s path, from reports by 12 operators as of 11 a.m. Central time. Those three groups add up to 130, which is this article’s own arithmetic rather than a figure the sources state in that form.

The split matters for reading the number. Only 126 of the 130 were emptied of crew; the other four rigs were repositioned away from the worst wind and waves, which is why the EIA phrases the count as platforms and rigs evacuated or moved.

Named operators filled in the picture. Shell began shutdowns at Mars, Olympus, Ursa, Vito and Appomattox, and Chevron suspended operations at four offshore locations, according to gCaptain. By Friday, Marine Insight reported that Chevron was still producing at four operated platforms while the other five were shut in, and that Shell had completed evacuations late Thursday at all five of its named facilities, with production staying off at Mars, Ursa, Olympus and Vito.

The EIA’s Today in Energy note reports that 130 production platforms and rigs had been evacuated or moved as of October 8 and attributes the count to the federal offshore regulator, which it calls the Marine Minerals Administration; the page it links to is that of the Bureau of Safety and Environmental Enforcement (BSEE), which Maritime Executive reports was recently folded into the Marine Minerals Administration. A breakdown of the same Thursday tally appears in gCaptain’s report, which cites reports from 12 operators as of 11 a.m. Central time: 121 production platforms evacuated, nearly one third of the 371 manned platforms in the Gulf, plus five non-dynamically positioned drilling rigs evacuated and four dynamically positioned rigs moved out of the storm’s path. The figures are built from operator submissions, 12 operators in the Thursday tally, but none of the reports read for this article quotes the regulation that obliges operators to file them, so none is cited here.

Production arithmetic: 1.28 million barrels and 62.9 percent

The EIA’s “about 1.3 million barrels per day” is a rounded version of a more exact number. gCaptain, relaying the regulator’s Thursday statement, put oil shut-ins at about 1.28 million barrels a day, or 62.9 percent of daily offshore oil output, and gas shut-ins at about 1.13 billion cubic feet a day, or 57.4 percent. The oil share had been about 25 percent on Wednesday. Dividing 1.28 million by 62.9 percent implies a normal Gulf output near 2 million barrels a day, which matches the EIA baseline Marine Insight cites of roughly 2 million barrels a day, about 15 percent of U.S. crude production. A separate account in Maritime Executive described the regulator’s shut-in as about 60 percent of Gulf oil and gas production.

The 1.3 million figure is a Thursday snapshot, not the peak, and it was already out of date when the EIA note published on October 9. Marine Insight, citing the regulator’s Friday report, recorded 129 of 371 staffed platforms evacuated and oil shut-ins of about 1.46 million barrels a day, 71.51 percent of Gulf output, up roughly 176,000 barrels a day from Thursday. Gas shut-ins rose to about 1.26 billion cubic feet a day, 58.84 percent. On Tuesday, before Isaias became a hurricane, nothing had been evacuated and 9.24 percent of oil output was offline.

The Associated Press account carried by Click2Houston likewise put Friday’s shut-in at more than two-thirds of Gulf oil production, about 1.5 million barrels a day. No post-landfall figure was confirmed for this article, so the October 8 numbers should be read as one point on a rising and then, presumably, falling curve.

Restart process: valves, inspections and the refinery risk

Shut-in is a sequence rather than a switch. According to gCaptain, operators close safety valves to secure wells before personnel leave, and after the storm passes facilities are inspected before production resumes. Undamaged platforms can typically return quickly, while damaged ones need more extensive repair. Marine Insight adds that harm to platforms, subsea equipment, pipelines or onshore facilities could delay restarts, so repairs can stretch beyond the platforms themselves.

Patrick De Haan, head of petroleum analysis at GasBuddy, told the AP he expected the shut-in oil production to come back fairly quickly, within a couple of days. Earth Science Associates, a consulting firm, estimated that up to 7.2 million barrels of Gulf production could be disrupted in total, down from a 9 million barrel estimate a day earlier after the forecast track shifted east.

The downstream exposure is separate from the platforms. The AP reported that Chevron’s Pascagoula, Mississippi, refinery and Vertex Energy’s Mobile, Alabama, refinery together make up 2.4 percent of U.S. refining capacity and face flooding and power-outage risk; that is a share in the storm’s path, not capacity lost. Andrew Lipow, a Houston oil analyst, said any problem there could take both facilities offline while diesel supplies were already tight. Carl Larry of Enverus said that with a power shutdown “the prices will spike immediately,” and that diesel, already above $6, could approach $7.

This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.

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