A Brown Pelican is mired in oil from the Deepwater Horizon oil spill, on the beach at East Grand Terre Island along the Louisiana coast, 3 June 2010. Ten years after an oil rig explosion killed 11 workers and unleashed an environmental nightmare in the Gulf of Mexico, companies are drilling into deeper and deeper waters where the payoffs can be huge but the risks are greater than ever. Photo: Charlie Riedel / AP Photo
A Brown Pelican is mired in oil from the Deepwater Horizon oil spill, on the beach at East Grand Terre Island along the Louisiana coast, 3 June 2010. Ten years after an oil rig explosion killed 11 workers and unleashed an environmental nightmare in the Gulf of Mexico, companies are drilling into deeper and deeper waters where the payoffs can be huge but the risks are greater than ever. Photo: Charlie Riedel / AP Photo

By Kevin Mcgill and Matthew Brown
18 April 2020

NEW ORLEANS (AP) – Ten years after an oil rig explosion killed 11 workers and unleashed an environmental nightmare in the Gulf of Mexico, companies are drilling into deeper and deeper waters, where the payoffs can be huge but the risks are greater than ever.

Industry leaders and government officials say they’re determined to prevent a repeat of BP’s Deepwater Horizon disaster. It spilled 134 million gallons of oil that fouled beaches from Louisiana to Florida, killed hundreds of thousands of marine animals and devastated the region’s tourist economy.

Yet safety rules adopted in the spill’s aftermath have been eased as part of President Donald Trump’s drive to boost U.S. oil production. And government data reviewed by The Associated Press shows the number of safety inspection visits has declined in recent years, although officials say checks of electronic records, safety systems and individual oil rig components have increased.

Average depth of wells in the Gulf of Mexico, 1999-2020 and number of inspection visits, 2010-2020. Data: U.S. Bureau of Safety and Environmental Enforcement. With more reliance on offshore reserves, the oil and gas industry is drilling deeper in the Gulf of Mexico, increasing the risk of accidents even as the number of safety inspection visits drops. Graphic: AP
Average depth of wells in the Gulf of Mexico, 1999-2020 and number of inspection visits, 2010-2020. Data: U.S. Bureau of Safety and Environmental Enforcement. Graphic: AP

Today companies are increasingly reliant on production from deeper and inherently more dangerous oil reserves, where drill crews can grapple with ultra-high pressures and oil temperatures that can top 350 degrees (177 degrees Celsius).

Despite almost $2 billion in spending by the industry on equipment to respond to an oil well blowout like BP’s, some scientists, former government officials and environmentalists say safety practices appear to be eroding. And there are worries that cleanup tactics have changed little in decades and are likely to prove as ineffective as they were in 2010.

It’s 18 April 2020. Ten years ago, an oil rig explosion killed 11 workers and unleashed an environmental nightmare in the Gulf of Mexico. Now, companies are drilling in even deeper waters where the payoffs can be huge but the risks are greater. Video: Associated Press

“I’m concerned that in the industry, the lessons aren’t fully learned — that we’re tending to backslide,” said Donald Boesch, a marine science professor at the University of Maryland who was on a federal commission that determined the BP blowout was preventable. […]

In the past year, the industry began producing crude for the first time from ultra-high pressure crude reserves in the Gulf. Overall production hit a record 2 million barrels a day before the coronavirus pandemic caused demand to plummet.

Pressures in those wells can approach 20,000 pounds per square inch, compared with almost 12,000 pounds for Deepwater Horizon.

Aerial view of the Deepwater Horizon oil rig burning after an explosion in the Gulf of Mexico, off the southeast tip of Louisiana, 21 April 2010. Ten years after an oil rig explosion killed 11 workers and unleashed an environmental nightmare in the Gulf of Mexico, companies are drilling into deeper and deeper waters where the payoffs can be huge but the risks are greater than ever. Photo: Gerald Herbert / AP Photo
Aerial view of the Deepwater Horizon oil rig burning after an explosion in the Gulf of Mexico, off the southeast tip of Louisiana, 21 April 2010. Photo: Gerald Herbert / AP Photo

“Higher risk, higher pressure, higher temperatures, more reliance on technology — it’s just a tougher environment to operate in,” said Lois Epstein, a civil engineer at the Wilderness Society who served on a government advisory committee post-spill.

Trump administration changes have intensified debate over how tightly the government should regulate, and what decisions should be left to industry professionals. [more]

10 years after BP spill: Oil drilled deeper; rules relaxed