D3 Energy (ASX:D3E): Helium Flow Restored at NGT245 E Following Remedial Cementing

Sonal Goyal

07 October 2026 11:32 PM AEDT

D3 Energy (ASX:D3E): Helium Flow Restored at NGT245 E Following Remedial Cementing

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Highlights

Remedial cementing at NGT245 E has isolated deeper water zones and restored gas flow from the well.
A gas sample from the restored flow returned a helium concentration of 5.2%, while the methane result is being retested.
Further analysis and tailored remedial work are expected before production testing at NGT245 E.
Remediation at the second well, NGT245 D, is expected to resume after a stabilisation period.
The update adds new technical information to D3 Energy’s broader appraisal work across its Free State acreage.

D3 Energy Limited (ASX:D3E) is a Natural Gas and helium developer with projects in South Africa and Australia. Its South African portfolio centres on the Free State Province, where the company is progressing appraisal and development work across its gas and helium acreage. On 6 October 2026, D3 Energy reported that remedial cementing at the NGT245 E well had successfully re-established gas flow, allowing a fresh sample to be collected for compositional analysis.

Remedial Work Restores Flow at NGT245 E

The NGT245 E well is located at Nooitgedacht within the company’s 100%-owned ER315 exploration right in South Africa’s Free State. Earlier 2026 work identified deeper water zones that were inhibiting gas flow. D3 Energy undertook cementing operations to isolate those zones from the gas-producing intervals.

The company said the remedial work at NGT245 E has now achieved that objective and restored gas flow. This enabled a gas sample to be taken and analysed. The result confirmed helium at 5.2% and methane at 49.7%. D3 Energy described the methane reading as anomalously low and said it is being retested, so the final composition remains subject to further laboratory confirmation.

What the Helium Result Means

The 5.2% helium measurement provides another data point from the company’s Free State acreage, but it does not by itself establish reserves, production capacity or commercial output from NGT245 E. The announcement did not provide a resource estimate for the well or a sustained production-test result.

D3 Energy said additional analysis of camera and log data is continuing and that more tailored remedial work is expected before production testing. No date was provided for that testing, meaning the next technical phase will depend on completion of the remaining well work.

Second Well and Broader Free State Programme

At NGT245 D, the second well in the programme, remediation is expected to resume after a period of stabilisation following initial cementing operations. The company has not yet reported the outcome of that work or specified how long the stabilisation period will continue.

Across the Free State, D3 Energy holds a broader portfolio of exploration and technical cooperation permits in addition to ER315. The company is also progressing a production right application associated with part of its South African acreage. Regulatory assessment and further technical work remain important steps before development decisions can be considered.

Near-Term Technical Focus

The immediate focus is on confirming the gas composition, completing further remedial work at NGT245 E, resuming work at NGT245 D and advancing production testing. The company is also using drilling and seismic information from Nooitgedacht to refine its geological interpretation of the area.

Because the latest announcement relates to remediation and a single gas sample, later testing will be important for establishing repeatability, flow characteristics and the technical significance of the result. Those matters were not quantified in the 6 October 2026 update.

Key Insights

D3 Energy’s latest update shows that well remediation has restored gas flow at NGT245 E and produced a new helium measurement of 5.2%. The result supports continued technical evaluation of the Nooitgedacht area, while several key questions remain open, including the confirmed methane composition, production-test performance and the outcome of remediation at NGT245 D. Future company updates will provide the evidence needed to assess how these wells fit into the broader Free State development programme.

FAQs

Q: What did D3 Energy report at NGT245 E?

A:The company reported that remedial cementing had isolated deeper water zones and restored gas flow at the well.

Q: What helium concentration was recorded?

A:A gas sample returned a helium concentration of 5.2%.

Q: Why is the methane result being retested?

A:D3 Energy said the reported methane level of 49.7% was anomalously low and is being checked again.

Q: Has production testing started at NGT245 E?

A:No. The company said further analysis and remedial work are expected before production testing.

Q: What is happening at NGT245 D?

A:Remediation is expected to resume after a stabilisation period, with no final outcome reported yet.

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