ExxonMobil Takes Papua LNG Operatorship as Santos Pays $189 Million to Lift Stake
A consortium reshuffle shifts control of Papua LNG to ExxonMobil and brings the project closer to a final investment decision, with $14 billion in capex now on the table.
Santos agreed on Monday (2026-09-07) to pay approximately $189 million to acquire an additional 3.3% participating interest in Petroleum Retention Licence 15 and Papua LNG from TotalEnergies, as the French major simultaneously handed operatorship of the project to ExxonMobil. The transaction reshapes who controls one of the more consequential undeveloped LNG projects in the Asia-Pacific basin.5,6
The deal lifts Santos' stake to 21% after Papua New Guinea's state exercises its back-in rights, which would increase the Australian company's share of LNG production from the project by about 19%, to roughly 1.2 million tonnes per year. ExxonMobil, through ExxonMobil PNG Antelope Limited, will hold 34.1% and take the operator seat. TotalEnergies retains a 20% interest despite stepping back from operations, while ENEOS Xplora takes 2.4% and PNG state entities Kumul Petroleum and MRDC hold a combined 22.5%.5
TotalEnergies agreed to sell a 9.1% post-state-back-in interest to its existing partners as part of the restructuring. The French company framed the operatorship transfer as a measure to bring the project closer to a final investment decision, a milestone Papua LNG has been working toward for years.6
On the cost side, TotalEnergies disclosed on Monday (2026-09-07) that project optimization and a renewed EPC tendering process have generated close to $4 billion in savings since 2024, bringing estimated capital expenditure down to around $14 billion. Asian LNG spot prices on the JKM benchmark were trading at $24.38 per MMBtu on Wednesday (2026-09-09), up 1.50% on the session, and a sanctioned Papua LNG at revised economics would add material long-run supply to a market currently pricing winter-ahead tightness into the curve.5
Papua LNG is designed to develop the Elk-Antelope gas fields and produce around 5.6 million tonnes of LNG annually, primarily for export to Asian buyers. At that volume it would be a consequential addition to the regional supply stack, though production remains contingent on FID, which has not yet been taken.5
The operator change carries more weight than a routine administrative shuffle. ExxonMobil already operates PNG LNG, the country's producing export facility, where Santos itself holds a 39.9% stake. Consolidating operatorship of both PNG gas projects under a single operator could simplify logistics and reduce overhead, though ExxonMobil has not publicly detailed its integration plans for the two assets.5,1
Santos has been deliberately deepening its PNG exposure. At an investor briefing in Sydney on Tuesday (2026-05-26), the company said its LNG strategy would focus on three regions: Alaska, Papua New Guinea, and the domestic Beetaloo and Bedout basins. Papua New Guinea sits at the centre of that pivot. Santos is also investing about $160 million net in the Agogo tie-in project, a brownfield scheme linking the Agogo Production Facility to the existing PNG LNG gas pipeline via a new 19-kilometre pipeline and two wells, with gross capital expenditure estimated at $400 million over three years and expected to add around 135 million cubic feet per day of production capacity.3,4
Santos enters this deal in a mixed financial position. Revenue in 2025 came in at $4.94 billion, down 8.21% on the prior year's $5.38 billion, while earnings fell 33.17% to $818 million, weighed in part by a temporary outage at the Barossa offshore gas project in the first quarter of 2026. The company also faces political friction in Australia, where a proposal to impose a 25% gas export tax prompted Santos's chief executive to warn publicly on Tuesday (2026-05-12) that Australia's reputation as a stable investment destination was being damaged.1
The corporate backdrop adds another variable. In May, Santos shares surged as much as 15.23% on Monday (2026-05-18) after an Abu Dhabi National Oil Company-led group submitted a non-binding takeover bid of $18.72 billion, or $5.76 per share, representing a 27.73% premium to the closing price of AU$6.96 on Friday (2026-05-15). That bid has not progressed to a binding offer based on available information, and it is not clear how the Papua LNG stake increase interacts with any ongoing ownership discussions.2
The $4 billion in cost savings claimed by TotalEnergies strengthens the project's economic case, but FID on Papua LNG has slipped before. ExxonMobil's entry as operator, combined with Santos's additional capital commitment, suggests partners are moving toward alignment — but the date remains unset, and PNG regulatory approvals, including the state back-in mechanics through Kumul Petroleum and MRDC, still need to run their course.5,6