✦ Guyana's Next Four VesselsNarrow moat

ExxonMobil (XOM) — the future bets

The clearest growth plan in the oil industry, because it consists of a known number of boats arriving on stated dates.

The Guyana development sequence is the clearest growth plan in the oil industry, because it consists of a known number of identifiable objects arriving on stated dates.

Production vessels on the Stabroek block4Producing today5Uaru 20266Whiptail 20278By end 2030Capacity above 900,000 barrels a day today, toward roughly 1.3 million once Whiptail arrives.
The most reliable growth in the company, and it is the barrel that earns 17.7 per cent rather than 4.3.

Four vessels are producing. Yellowtail, the fourth, started up in 2025 on the ONE GUYANA floating production vessel, taking installed capacity on the Stabroek block above 900,000 barrels a day, and ramped to roughly 250,000 barrels a day within about three months1. Uaru is anticipated to start in 2026 and Whiptail in 2027, which would take capacity toward roughly 1.3 million barrels a day2. Hammerhead was funded in 2025 after regulatory approvals from the government of Guyana and is anticipated online in 2029, and a seventh development was announced in September 20253. ExxonMobil anticipates eight production vessels in operation on the block by the end of 20304.

This is most of how the company's 5.5 million barrel a day target for 2030 gets reached5, and it is the highest-return barrel in the portfolio: non-US Upstream earned 17.7 per cent on average capital employed in 2025 against 4.3 per cent for the American half6.

The execution record supports the plan. Guyana went from first oil in 2019 to four producing developments in six years, which for deepwater is close to unprecedented. Each vessel is a several-billion-dollar object built in a shipyard and towed into position, and ExxonMobil has now done it four times with the same partners and the same engineering.

The risks are the ones that attach to any single-jurisdiction concentration: fiscal terms granted by one government, a border claim by a neighbour, and a hydrocarbon column that is exceptionally good until a well says otherwise. And the ownership has changed: Chevron acquired Hess's 30 per cent in July 2025 over ExxonMobil's objection7.

Capacity against actual production is what settles it. Installed capacity above 900,000 barrels a day today and roughly 1.3 million once Whiptail arrives8; Guyana's history so far is of the vessels outperforming their nameplate, which is why the company's overall production went from 3,738 thousand oil-equivalent barrels a day in 2023 to 4,736 in 20259.

Moat trajectory: Widening

Yellowtail started in 2025, Uaru is anticipated in 2026 and Whiptail in 2027, Hammerhead is funded for 2029, and a seventh development was announced in September 2025. Capacity goes from above 900,000 barrels a day toward roughly 1.3 million. This is the most reliable growth in the company.

The number that tests this moat
Reported
Production vessels on Stabroek
four today, eight expected by 2030

Uaru is anticipated in 2026 and Whiptail in 2027, taking capacity toward roughly 1.3 million barrels a day; Hammerhead was funded in 2025 for 2029. This is the most reliable growth ExxonMobil has, and it is the barrel that earns 17.7 per cent rather than 4.3.

Source: Exxon Mobil Corporation Form 10-K, fiscal year 2025 ↗
References
  1. ReportedYellowtail, the fourth, started up in 2025 on the ONE GUYANA floating production vessel, taking installed capacity on the Stabroek block above 900,000 barrels a day, and ramped to roughly 250,000 barrels a day within about three months.
    ExxonMobil news release, 'ExxonMobil Guyana begins production at fourth offshore Guyana project' — start-up of the Yellowtail development on the ONE GUYANA floating production, storage and offloading vessel, taking installed capacity on the Stabroek block above 900,000 barrels of oil per day, and the subsequent ramp toward 250,000 barrels a day. — August 2025 · publ. 8 August 2025 · source ↗
  2. ReportedUaru is anticipated to start in 2026 and Whiptail in 2027, which would take capacity toward roughly 1.3 million barrels a day.
    ExxonMobil news release, 'ExxonMobil Guyana begins production at fourth offshore Guyana project' — start-up of the Yellowtail development on the ONE GUYANA floating production, storage and offloading vessel, taking installed capacity on the Stabroek block above 900,000 barrels of oil per day, and the subsequent ramp toward 250,000 barrels a day. — August 2025 · publ. 8 August 2025 · source ↗
  3. ReportedHammerhead was funded in 2025 after regulatory approvals from the government of Guyana and is anticipated online in 2029, and a seventh development was announced in September 2025.
    ExxonMobil news release, 'ExxonMobil Guyana begins production at fourth offshore Guyana project' — start-up of the Yellowtail development on the ONE GUYANA floating production, storage and offloading vessel, taking installed capacity on the Stabroek block above 900,000 barrels of oil per day, and the subsequent ramp toward 250,000 barrels a day. — August 2025 · publ. 8 August 2025 · source ↗
  4. ReportedExxonMobil anticipates eight production vessels in operation on the block by the end of 2030.
    Exxon Mobil Corporation Form 10-K for FY2025, Management's Discussion and Analysis — Business Results: segment financial results and identified items, the 2025 earnings driver analyses for each segment, and the Upstream highlights covering the Permian, Guyana, LNG and the major project portfolio. — FY2025 · publ. February 2026 · source ↗
  5. ReportedThis is most of how the company's 5.5 million barrel a day target for 2030 gets reached, and it is the highest-return barrel in the portfolio: non-US Upstream earned 17.7 per cent on average capital employed in 2025 against 4.3 per cent for the American half.
    ExxonMobil news release, 'ExxonMobil raises its 2030 Plan' — $25 billion of earnings growth and $35 billion of cash flow growth by 2030 at constant prices and margins, production of 5.5 million oil-equivalent barrels per day about 30% above the next closest international oil company, unit earnings above $15 per barrel, cash capital expenditure of $27-$29 billion in 2026 and $28-$32 billion a year from 2027 to 2030, and approximately $145 billion of cumulative surplus cash flow through 2030 at $65 Brent. — 2026-2030 plan · publ. 9 December 2025 · source ↗
  6. ReportedThis is most of how the company's 5.5 million barrel a day target for 2030 gets reached, and it is the highest-return barrel in the portfolio: non-US Upstream earned 17.7 per cent on average capital employed in 2025 against 4.3 per cent for the American half.
    Exxon Mobil Corporation Form 10-K for FY2025, Business Profile (Financial) — earnings after income taxes, average capital employed, return on average capital employed and cash capital expenditures for each segment and geography, and the corporate total. — FY2025 · publ. February 2026 · source ↗
  7. ReportedAnd the ownership has changed: Chevron acquired Hess's 30 per cent in July 2025 over ExxonMobil's objection.
    CNBC, 'Chevron defeats Exxon in dispute over Guyana oil assets, clearing path for Hess acquisition' — the arbitration over the right of first refusal on Hess's 30% interest in the Stabroek block, ExxonMobil's 45% operated interest and CNOOC's 25%, and the completion of Chevron's $53 billion acquisition of Hess. — July 2025 · publ. 18 July 2025 · source ↗
  8. ReportedInstalled capacity above 900,000 barrels a day today and roughly 1.3 million once Whiptail arrives; Guyana's history so far is of the vessels outperforming their nameplate, which is why the company's overall production went from 3,738 thousand oil-equivalent barrels a day in 2023 to 4,736 in 2025.
    ExxonMobil news release, 'ExxonMobil Guyana begins production at fourth offshore Guyana project' — start-up of the Yellowtail development on the ONE GUYANA floating production, storage and offloading vessel, taking installed capacity on the Stabroek block above 900,000 barrels of oil per day, and the subsequent ramp toward 250,000 barrels a day. — August 2025 · publ. 8 August 2025 · source ↗
  9. ReportedInstalled capacity above 900,000 barrels a day today and roughly 1.3 million once Whiptail arrives; Guyana's history so far is of the vessels outperforming their nameplate, which is why the company's overall production went from 3,738 thousand oil-equivalent barrels a day in 2023 to 4,736 in 2025.
    Exxon Mobil Corporation Form 10-K for FY2025, Items 1 and 2 — Business and Properties: oil and gas production and reserves tables, wells drilling, the review of principal ongoing activities by region (United States, Canada/Other Americas incl. Guyana and Brazil, Europe, Africa, Asia, Australia/Oceania), lease and production-sharing terms including the Guyana Petroleum Activities Act 2023, employees, and the list of lower-emission and new business opportunities. — FY2025 · publ. February 2026 · source ↗
Sources
Generated September 23, 2026