Anglo-Dutch supermajor Shell said today that it has successfully re-started production at its Olympus semi-submersible production platform in the US Gulf of Mexico after repairs to some of the damages caused by Hurricane Ida to its West Delta 143 offshore facilities were completed.

The WD-143 facilities serve as the transfer station for all production from Shell’s assets in the Mars corridor in the Mississippi Canyon area of the US Gulf to onshore crude terminals.

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The company found significant structural damage to the facilities during a comprehensive damage assessment performed in September.

At that time, the company estimated its WD-143-A platform would be offline to the end of the year, and that its WD-143-C platform would be operational in the fourth quarter of 2021.

Production from its Olympus platform flows across the WD-143-C platform, according to Shell.

The company’s remaining assets in the Mars corridor—the Mars and Ursa platforms—remain shut in, according to the company. Production from these platforms flows across the WD-143-A platform and is expected to resume in the first quarter of 2022, the company said.

When Hurricane Ida made landfall at the end of August, more than 95% of the US Gulf crude production, about 1.7 million barrels per day, was shut-in.

In the weeks since, about 83% of total oil production in the US Gulf is now online, with about 294,000 barrels per day remaining shut-in, along with about 541 million cubic feet per day of natural gas production, according to the final storm report published by the US Bureau of Safety and Environmental Enforcement on 23 September.

The startup of the Olympus platform returns about 100,000 barrels of oil equivalent per day to the US Gulf of Mexico production output.