While Hess’ earnings from Guyana rose to $3.1 billion last year from $1.9 billion in 2023, Chevron’s adjusted earnings last year totalled $18.3 billion, down from $24.7 billion in 2023.

There is no appeals process at the International Chamber of Commerce, the court that oversaw the arbitration case.

Even as it awaited the arbitration verdict, Chevron was making preparations so it could close the deal with Hess quickly, Reuters previously reported.

Information technology workers from Chevron and Hess have met regularly to plan the integration, and Hess employees were informed that they could request a severance package following the deal’s close.

The claims from Exxon and CNOOC had kicked off a lengthy legal battle that captured the attention of the global oil industry, shareholders, and attorneys who craft joint operating agreements that govern oil partnerships around the world.

The case illustrated the value of the Stabroek Block, which drove profits for the Exxon-led consortium that controlled all of its oil output, transformed Guyana into one of the world’s fastest-growing economies, and still had potential for further oil discoveries.

The dispute centred on the interpretation of just several words in the confidential joint operating agreement between Exxon, Hess and CNOOC, experts told Reuters.

“It didn’t have to happen this way. We were engaged in good-faith conversations, actually for months, which ended abruptly when we were notified that they (Exxon) were going to file for arbitration.

“The outcome is simple and straightforward, as we expected from the beginning,” Wirth told Reuters.

CNBC, which first reported the news of Chevron’s win, cited an interview with Exxon CEO Darren Woods, who said the company was examining the ruling to determine whether to make provisions in contracts to ensure it prevails in future disputes.

CNBC also reported that Woods said that Exxon’s relationship with Chevron in other projects around the world was fine throughout the arbitration proceedings.

“This was never a Chevron thing. This was more about getting the contracts enforced the way they were intended,” Woods told CNBC.