What did Santos (ASX:STO) announce regarding its operations in Papua New Guinea?

Santos has reached a Final Investment Decision (FID) to proceed with the Agogo Production Facility (APF) Tie-In Project. This brownfield development involves building a 19-kilometre pipeline to connect the Agogo facility to the existing PNG LNG network, alongside drilling two new wells.

What is the expected capital expenditure for the Santos (ASX:STO) Agogo project?

The total gross capital expenditure is estimated at US$400 million over a three-year period. Santos holds a specific share of this investment amounting to approximately US$160 million, which the company expects will unlock significant value from its existing PNG assets.

When is the first gas production expected from the Agogo Tie-In Project?

Santos has targeted the second quarter of 2028 for the commencement of "first gas." This timeline accounts for the three-year construction and modification phase following the final investment decision and joint venture approvals.

What are the key financial metrics and returns for this Santos investment?

The project is considered highly value-accretive with an expected internal rate of return of more than 50%. Additionally, Santos projects a rapid payback period of less than four years from the date of the Final Investment Decision.

How does this news affect the long-term production profile of Santos (ASX:STO)?

The project converts 66 million barrels of oil equivalent (mmboe) from undeveloped to developed reserves, adding roughly 135 mmscf/d in production capacity.

Why is this considered a "brownfield" development for Santos?

It is classified as brownfield because it leverages existing PNG LNG processing and export infrastructure rather than building entirely new facilities from scratch. By tying the Agogo facility into the primary gas network, Santos maximises the utility and efficiency of its current asset base.

What are the primary risks associated with the Agogo Tie-In Project?

While regulatory approvals and land access are secured, the project faces standard sector risks such as potential construction delays or cost overruns over the three-year capex cycle.

Santos approves major Agogo gas project in PNG

Written by Heidi Cuthbert Published May. 12 2026Last Updated May. 12 2026

Santos (ASX:STO) announced a final investment decision to proceed with the Agogo production facility tie-in project in Papua New Guinea.

The brownfield development, sanctioned following approval from the PNG LNG joint venture, underscores a commitment to maximising existing infrastructure while securing long-term production stability.

The project involves the construction of a new 19-kilometre pipeline designed to connect the Santos-operated Agogo facility to the primary PNG LNG gas network.

Alongside the pipeline, the scope includes the drilling of two new wells and essential modifications to existing production facilities.

With a gross capital expenditure estimated at US$400 million over three years—of which Santos’ share is approximately US$160 million—the venture is poised to unlock substantial value. First gas is currently targeted for the second quarter of 2028.

Financially, the Agogo tie-in is remarkably robust, boasting an expected internal rate of return exceeding 50%.

It is projected to achieve a payback period of less than four years from the FID.

The development will convert 66 mmboe of 2P undeveloped reserves into developed status, providing an incremental production capacity of approximately 135 mmscf/d.

CEO Kevin Gallagher highlighted that the project aligns with the company’s disciplined capital allocation strategy, supporting a 12-year production plateau and extending the potential for sustained operations in the region well beyond 2050.

At the time of reporting, Santos' share price was $7.58.