Looking Beyond First Gas

The significance of first gas is easy to understand. It marks the moment when a discovery finally begins generating revenue. For Aminex, it would represent the culmination of years of work across appraisal, development planning, regulatory approvals and infrastructure construction. It is therefore unsurprising that much of the market's attention is focused on that milestone.

CH-1, however, represents a different type of opportunity altogether.

Where first gas is about monetising a known asset, CH-1 is about determining whether that asset is significantly larger than currently recognised. Success would not simply increase production in the near term. It could potentially reshape perceptions of the entire Ntorya accumulation and influence development planning for years to come.

That distinction matters because investors often focus on cash flow while overlooking the value that can be created through resource growth. Producing more gas is valuable. Proving that substantially more gas exists can sometimes be even more significant.

The Number That Keeps Appearing

The figure most frequently discussed in relation to CH-1 is 7.95 TCF.

That number originates from Aminex's February 2024 announcement, which outlined an upside aggregated Gas Initially In Place estimate for the wider Ntorya accumulation if CH-1 successfully encounters additional stacked reservoir sands. While the figure inevitably attracts attention, it is important to understand what makes CH-1 different from a typical exploration well.

In many cases, exploration wells are drilled in areas where little is known about the underlying geology and where the primary objective is simply to determine whether hydrocarbons are present at all. CH-1 is not that type of well. It is being drilled within an already proven gas accumulation and alongside a field development programme that is progressing towards production.

The significance of the well is that it sits at the intersection of appraisal, development and exploration. On one level, CH-1 will provide additional information about a field that has already been successfully discovered and appraised. On another, it is expected to contribute valuable data for future development planning. At the same time, it will test additional stacked reservoir intervals that have not previously been penetrated, offering the potential to materially increase understanding of the wider accumulation.

This distinction is important because the outcome is not necessarily binary. Investors often think of exploration wells in simple terms: success or failure. CH-1 has the potential to create value across a range of outcomes. It may improve understanding of the existing field, increase confidence in resource estimates, support future development planning or, in a more successful scenario, demonstrate the presence of additional gas-bearing reservoirs that significantly increase the scale of the wider accumulation.

It is also important to recognise that CH-1 follows an extensive 3D seismic programme that has significantly improved understanding of the Ntorya structure and identified additional stacked targets within an already proven gas system. Unlike many exploration wells, where the primary question is whether hydrocarbons are present at all, CH-1 is being drilled within an area that has already delivered multiple successful wells and substantial discovered gas volumes.

That does not mean the outcome is guaranteed. Additional reservoir intervals must still be encountered, evaluated and proven commercially viable. However, CH-1 should perhaps be viewed less as a traditional high-risk frontier exploration well and more as a hybrid appraisal, development and exploration well. The upside case is not based upon drilling an entirely unknown structure, but upon expanding understanding of a discovery that has already demonstrated significant gas potential.

For investors, the significance of the 7.95 TCF upside case is therefore not simply the headline number itself but what it could mean for the long-term development of Ntorya. A larger resource base opens the door to larger development programmes, longer production lives and a broader range of commercial opportunities. It can influence everything from infrastructure planning and financing discussions to future reserve bookings and strategic partnerships. This combination of existing success, extensive seismic work and significant upside potential helps explain why CH-1 is attracting increasing attention as one of the most important milestones in Aminex's near-term future.

Why The Timing Matters

What makes CH-1 particularly interesting is not just the size of the potential resource but the timing of the well itself.

Had CH-1 been drilled ten years ago, the discussion would likely have centred on whether Tanzania could actually utilise a significantly larger gas discovery. Investors would have asked where the gas would go, who would buy it and whether sufficient infrastructure existed to support long-term development.

Today, those questions look rather different.

As explored in the previous articles in this series, Tanzania's domestic gas story has evolved dramatically over recent years. Industrial demand is rising, new economic zones are being developed, major infrastructure projects are progressing and government planning documents are targeting substantial increases in both gas production and domestic consumption. Rather than trying to stimulate demand, Tanzania increasingly appears to be preparing for it.

This changing backdrop may ultimately prove just as important as the geology itself.

A large resource is one thing. A large resource being developed into a rapidly expanding market is something else entirely.

A granular picture of the gas field was developed thanks to 3D sesimic data processing and interpretation, which led to the proposal of a phased development of Ntorya.
(Image Credit: Official Aminex PLC presentation 2025)

Conceptual geoseismic line from the new Ruvuma 3D survey through the Mtwara licence in a North-South direction illustrating the key plays and stacked perspectivity described in this report.
(Image Credit: Official ARA Petroleum Revised Resource Potential Presentation 2024)

Tanzania Is Planning For More Gas

One of the most striking conclusions from Tanzania's recently published Fourth Five-Year Development Plan is the scale of the country's future ambitions. The Government is targeting domestic gas utilisation of 800 MMscf/d by 2031 alongside onshore production of 1,000 MMscf/d. Significant increases in power generation capacity, industrial development and pipeline infrastructure are also planned over the same period.

Whether every one of those targets is achieved exactly as written remains to be seen. Development plans are, by their nature, aspirational. However, they provide a useful indication of the direction in which policymakers expect the country to move.

The important point is that Tanzania is no longer planning around today's gas consumption levels. It is planning around a future in which considerably larger volumes of gas are required to support industrialisation, electrification and economic growth.

Against that backdrop, the potential significance of a larger Ntorya resource becomes much easier to understand.

Mtwara LNG Could Add Another Dimension

If there is one development capable of changing the long-term picture even further, it may be Mtwara LNG.

The project has increasingly appeared within official planning documents and now forms part of the wider discussion surrounding Tanzania's future gas strategy. Importantly for Aminex investors, project material has identified Ntorya as one of the potential supply sources.

That matters because larger gas discoveries require larger markets. Domestic demand growth alone can support development, but the addition of LNG infrastructure introduces another potential route to commercialisation. Regional exports, international LNG sales and associated industrial developments all become part of the conversation.

Suddenly the debate is no longer simply about whether Tanzania can consume more gas.

The debate becomes how much gas Tanzania may ultimately require and how many different markets that gas may eventually serve.

For a company of Aminex's size, that is a very different discussion from the one investors were having only a few years ago.

Why Investors Should Be Watching Closely

None of this should be interpreted as a prediction of drilling success. CH-1 remains an exploration well and, like all exploration wells, carries risk. Until results are available, uncertainty remains.

However, investors should recognise that CH-1 is being drilled against a backdrop that has changed significantly. Tanzania's demand outlook looks stronger. Infrastructure development is advancing. Government ambitions have expanded. Potential routes to market have multiplied.

As a result, a successful CH-1 outcome today could have implications that extend far beyond simply adding another well to the development plan.

It could influence how investors, lenders, partners and policymakers view the wider Ntorya opportunity.