GUYANA · OIL
Key Facts
- —Who ExxonMobil, which operates Guyana’s Stabroek Block with Chevron and China’s CNOOC.
- —What Exxon has not asked to extend the block’s exploration licence, an executive said.
- —When The licence now runs to October 2027, after a one-year extension granted in 2020.
- —Numbers Exxon holds 45%, Chevron 30% and CNOOC 25% of the 6.6 million-acre block.
- —Why it matters Chevron and Exxon are US companies, and Guyana’s oil supplies Atlantic Basin refiners.
- —Power Index
ExxonMobil, the US oil major, has not asked Guyana to extend the exploration licence for its giant Stabroek offshore block, according to Kaieteur News, a Guyanese newspaper, on Wednesday 21 October 2026. The licence now runs until October 2027, a year later than first planned.
The question matters to US readers because Exxon and Chevron are American companies with large stakes in one of the world’s fastest-growing oil provinces. Any change to the exploration rules could shape future drilling, supply and shareholder returns.
What the Exxon Executive Said
John Ardill, an Exxon vice-president who leads its global exploration, said the company had not requested an extension, according to Kaieteur News. He added that the possibility could be revisited around the middle of next year.
The exploration period is the time in which a company may search for new oil before it must give back part of its acreage. The exploration period was originally due to end in October 2026.
How the Deadline Moved to 2027
In 2020, the government of former president David Granger granted a one-year adjustment to the exploration period. Kaieteur News said the reason was the impact of the Covid-19 pandemic.
OilNOW reported that the extension excluded the period from March 2020 to March 2021 from the elapsed time. The block’s licence therefore now runs until October 2027.
The Block and Its Owners
The Stabroek Block covers about 6.6 million acres in the Atlantic Ocean off Guyana. ExxonMobil Guyana Limited operates it with a 45% stake, while Chevron holds 30% after buying Hess and CNOOC holds 25%.
Kaieteur News reported that the group has made 46 discoveries since its first commercial find in May 2015. It also said a proposed 35-well exploration campaign for 2028 to 2033 awaits approval from Guyana’s Environmental Protection Agency.
The Gas Question
Reuters reported in mid-October that Guyana may scale back its plans for liquefied natural gas, because Exxon needs more gas to keep its oil wells producing. The report does not link that issue to the licence.
What It Means for You
For investors in Exxon and Chevron, the licence is a timing issue rather than an immediate risk, since the current period runs for another year. A request next year would show how much acreage the partners want to keep exploring.
For US refiners and fuel buyers, Stabroek is a steady source of crude from the Atlantic Basin. Delays or tighter licence terms would matter mainly over the longer term, as new fields are developed.
What Is Not Known
It is not known whether Exxon will seek an extension, or whether Guyana’s government would grant one. Neither government nor company has published terms for such a request.
It is also not known how much acreage the partners would give back when the exploration period ends. That figure was not stated in the reports we reviewed.
Frequently Asked Questions
Has Exxon asked to extend its Stabroek exploration licence?
No. An Exxon vice-president said the company has not requested an extension, though it may revisit the question around the middle of 2027, according to Kaieteur News.
When does the exploration licence now end?
It runs until October 2027. The exploration period was due to end in October 2026, but Guyana’s former government added one year in 2020.
Who owns the Stabroek Block?
ExxonMobil holds 45% and operates the block. Chevron holds 30% and China’s CNOOC holds 25%.
Why does gas matter for Stabroek?
Reuters reported in mid-October that Guyana may scale back its liquefied natural gas plans, because Exxon needs more gas to keep its oil wells producing. The report does not link that issue to the exploration licence.
Sources: Kaieteur News; Kaieteur News; OilNOW; ExxonMobil Guyana.
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