Aminex: From Acorn to Oak – Chapter 9: Seismic & Scale-Up

The data that turned a discovery into a giant

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With the farm-out complete and funding secured, the stage was set for the next big step: a fresh look beneath the surface. Until then, Aminex and its partners had relied mostly on 2D seismic data and the encouraging results of Ntorya-1 and Ntorya-2. It was enough to prove hydrocarbons, but not enough to map the full extent of the resource.

That changed when 3D seismic was acquired across the Ruvuma acreage. For the first time, the subsurface could be seen in high resolution. The results were striking. Structures that had been hinted at on 2D were revealed in detail. Reservoir connectivity was better understood. New drilling targets came into focus.

Most importantly, the numbers jumped. Independent assessments, incorporating the new seismic data, lifted the estimated gas in place from the hundreds of billions of cubic feet into multiple trillions. Ntorya was no longer just a promising field — it was Tanzania’s largest onshore gas development in the making.

For Aminex, still holding its 25% interest on a free carry, the upgrade was a game-changer. The farm-out had already ensured the company would not be bankrupted by development costs. Now the seismic confirmed that the upside was far greater than originally imagined. A quarter share of a small discovery is one thing; a quarter share of a multi-TCF basin is quite another.

The new seismic also laid the technical groundwork for the Chikumbi-1 (CH-1) well. Designed to test deeper zones and provide further calibration of the seismic data, CH-1 would help convert gas in place into booked reserves — the critical step for financing and long-term planning.

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For shareholders, the 3D seismic was the moment the story shifted gears again. Ntorya wasn’t just commercial — it was strategic, both for Tanzania’s energy security and for Aminex’s future.

➡️ Next time: Chapter Ten — To Be Continued. With the CPF under construction, pipeline contracts in place, and CH-1 on the horizon, the next RNS will carry the story into first gas and the long-awaited cashflow era.

Aminex: From Acorn to Oak – Chapter 7: The Ruvuma Basin Story

Ntorya’s promise and the wells that proved it

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If Kiliwani North was Aminex’s proof of concept, the Ruvuma basin was always the real prize. Stretching across southern Tanzania and into Mozambique, this frontier play had the scale to change the company’s future — if it could be unlocked.

The first breakthrough came in 2012 with the drilling of Ntorya-1 (NT-1). The well flowed at around 20 MMcfd of gas, with light condensate. For the first time, Aminex had a discovery of material size — one that could support development rather than just prove hydrocarbons existed.

Five years later, in 2017, the partners drilled Ntorya-2 (NT-2). This wasn’t just a repeat exercise — it was confirmation. NT-2 flowed at rates above 17 MMcfd and extended the known limits of the reservoir, it even brought the excitement of oil shows in the mud cuttings! With two wells delivering strong results, independent assessments began to point to hundreds of billions of cubic feet, and potentially over a trillion cubic feet, of gas in place.

For Aminex, NT-1 and NT-2 were transformational. Together they showed that Ruvuma wasn’t a marginal basin — it was one of East Africa’s most exciting undeveloped gas assets. But success brought a new problem.

Big discoveries demand big money. Building a processing plant, drilling more wells, and laying a pipeline to Madimba would cost hundreds of millions of dollars. For a junior like Aminex, already stretched by years of exploration, that scale of capex was impossible to fund alone.

It left the company at a crossroads: hold onto the prize and risk running out of money, or bring in a heavyweight partner with the resources to carry it forward..

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The Ntorya discoveries proved the potential. The next challenge was to secure the funding and expertise to turn them into production.

➡️ Next time: Chapter Eight — Farm-out & Transformation. We’ll follow how Aminex brought in ARA Petroleum, secured a $35m+ free carry, and positioned itself for a share of future cashflow without the burden of development costs.