An offshore oil rig in California is producing oil again after being shut down for ten years. This marks a big step for oil operations in the state, especially as two more rigs are planned to start soon.

Oil Starts Flowing Again From Platform Harmony

A Texas-based company named Sable Offshore restarted oil production on May 15, 2025, from the Harmony offshore oil rig. This platform is part of the Santa Ynez Unit (SYU) located off the coast near Santa Barbara, California.

Oil from six wells is now being sent from Harmony to Las Flores Canyon, where the oil is processed and stored. The rig is currently pumping about 6,000 barrels of oil per day. This is just the beginning, as only 30% of the wells have been tested so far. The rest will be checked and possibly brought online over the next few days.

Why Was It Shut Down in the First Place?

Back in May 2015, an oil pipeline connected to the offshore oil rig broke and spilled nearly 450,000 gallons of oil near Refugio State Beach. The damage was serious, and oil production was stopped for safety reasons. The pipeline had become corroded over time, causing the rupture.

Sable Offshore owns this pipeline and has spent the last several years working to repair and test it. Now, after a lot of work, they are slowly bringing the system back online.

More Offshore Oil Rigs to Start Soon

Harmony is just one of three offshore oil rigs in the Santa Ynez Unit. Sable plans to bring the Heritage and Hondo platforms online soon. There are 44 wells on the Heritage offshore oil rig and 26 wells on Hondo. The company says Heritage should start producing oil again in July 2025, and Hondo will follow in August 2025.

These efforts are part of a plan to slowly restart the full Santa Ynez Unit after a decade of silence.

A Positive Test Run

Before starting full production, Sable ran several test operations in May 2025. These tests showed that the wells at Harmony are performing even better than they were before the 2015 shutdown. Back then, the whole Santa Ynez Unit produced around 45,000 barrels of oil equivalent each day.

The early test results gave Sable the confidence to start pumping oil again, even though they’re only using a small part of the full setup for now.

Statement From the Company

Jim Flores, CEO of Sable Offshore, shared his excitement about restarting the offshore oil rig. He said this restart wouldn’t have been possible without the hard work of the company’s workers, partners, and community support. He also thanked local and federal agencies for helping make the restart happen in a safe and responsible way.

Flores added that the strong performance from Harmony shows how good the Santa Ynez Unit reservoir still is, even after ten years of no production.

Safety and Pipeline Testing

Sable finished fixing pipeline problems in Gaviota State Park on May 18, 2025, which was the final step in its repair program. Now, seven out of eight parts of the pipeline have passed hydrotesting — a way to make sure pipelines don’t leak. The final hydrotest will be completed soon, after which the full pipeline can be used.

The company expects to fill 540,000 barrels' worth of storage at Las Flores Canyon by mid-June 2025. After that, oil sales will start again in July 2025, helping boost US oil production numbers.

Legal Disputes Continue in the Background

While production is restarting, legal issues are still ongoing. Environmental groups like the Center for Biological Diversity and the Wishtoyo Chumash Foundation filed a lawsuit in a Los Angeles federal court. They say the federal government did not update the development plans properly for the offshore oil rig system.

This case goes back to an executive order by former President Donald Trump, who allowed oil drilling in areas that had previously been protected. The groups are fighting that order, saying it was rushed and harmful to the environment.

Oil Rigs vs. Climate Goals

California is working toward big climate goals. The state wants to cut carbon emissions to zero and run completely on clean energy by 2045. Still, there are three offshore oil rigs operating off the coast of Orange County — Eva, Emmy, and Ester — which were built between 1963 and 1985.

These older rigs, along with the recently restarted Harmony platform, are reminders that oil drilling is still part of California’s energy mix, even as the state looks toward greener solutions.

A New Chapter for US Oil Production

Restarting offshore oil rigs like those in California could lead to a steady increase in US oil production in the coming years. These rigs, once fully active, could produce thousands of barrels of oil each day.

According to energy experts, this move is not just about boosting production — it also helps support the country’s overall energy supply. With more oil coming from inside the country, the U.S. can rely less on oil from other nations. This could make prices more stable and improve long-term energy security.

If we look at US oil production by year, the numbers have gone up and down many times. These changes are often caused by natural disasters like hurricanes, changes in government policies, or shifts in global oil prices.

Things like new technology and public opinion also play a part. But now, by bringing back platforms such as Harmony, Heritage, and Hondo, the country is adding new momentum to oil production. These reactivations are part of a larger trend of bringing older, unused resources back into service, which is now playing a bigger role in shaping the future of the oil and gas industry in the United States.

What’s Next?

The offshore oil rig project at Santa Ynez is just getting started. If all goes according to plan, full production from all three platforms will resume by late summer. This would give a strong boost to US oil production and bring hundreds of jobs and energy resources to the California coast.

Sable Offshore believes that their system is now stronger and safer than before. The company is confident in its plans, and the early results support their optimism.

Still, there are challenges ahead. Environmental concerns, legal battles, and California’s push for clean energy will all play a role in shaping what comes next for this offshore oil rig system and the wider industry.

Key Takeaway:

After a ten-year pause caused by a major oil spill, Sable Offshore has restarted production at the Harmony platform, one of three offshore oil rigs in the Santa Ynez Unit. Two more rigs will begin soon. This could bring a meaningful boost to US oil production, but not without ongoing debates about environmental safety and the future of oil drilling in California.