Woodside Energy's proven reserves declined in 2025 despite achieving record production of 545,000 barrels of oil equivalent per day. This decline has raised questions about the company's future strategy for replacing its reserves.

Reserves Position and Life

As of February 2025, Woodside's remaining proven (1P) reserves were 1.8821 billion boe, with proven plus probable (2P) reserves at 2.9995 billion boe and contingent resources (2C) at 5.7957 billion boe. A key metric, the 1P reserves to production (RtP) ratio, has fallen from an estimated 17 years at the end of 2021 to less than nine years by end-2025. Analysts note, however, that the 2P RtP remains "reasonably healthy" above 14 years. Fitch Ratings has previously cited Woodside's reserves life as below the average of its investment-grade peers, largely due to ageing Australian assets.

Primary Factors Behind the Decline

The reduction in reserves is primarily attributed to recent divestments. Specifically, the 2025 declines in proven developed reserves, proved plus probable developed reserves, and 2C contingent resources were linked to the divestment of the Greater Angostura assets in Trinidad and Tobago. Furthermore, a sharp 20% decline in reserves life in 2024 was driven by the sale of a 25.1% interest in the Scarborough field, which significantly reduced both proven and proven plus probable reserves.

Shift in Growth Strategy

Analysts indicate the company is shifting from an owned upstream reserves model to an infrastructure-led growth strategy. This pivot is exemplified by the acquisition of the Louisiana LNG project (formerly Driftwood LNG), which is included in reserves and targets first LNG in 2029. This project, with offtake contracts already secured, is expected to be a future focus for investors. The strategic shift means future growth is anticipated to depend more on infrastructure expansion than on traditional reserve additions.

Exploration and Replacement Performance

Woodside has faced challenges in organic reserves growth. Analysis shows the company has made no commercial discoveries since 2020 and has replaced only 25% of its production through extensions, discoveries, or improved recovery over that period. Excluding the impacts of divestments and production, Woodside's proved reserves actually increased by 134.1 million boe in 2025, with modest contributions from the Pluto (Australia) and Sangomar (Senegal) projects. The dip in 2C contingent resources was due to final investment decisions on US and Australian projects and the booking of Sangomar water injection volumes.

Future Outlook and Strategic Focus

While the current portfolio is described as "well placed," reserves replacement is likely to become a strategic focus for the incoming chief executive. The industry context sees supermajors actively working to maintain reserve bases through improved recovery, acquisitions, and exploration due to prolonged hydrocarbon demand expectations. Woodside is advancing projects like Bass Strait offshore Australia and remains open to partnerships with smaller developers in exploration areas. Pending transactions, such as an asset swap with Chevron in Australia, are also expected to alter its reserve balance in the future.