Helium One Global 是坦桑尼亚的主要氦气勘探公司，在 Itumbula West-1（“ITW-1”）的扩展井测试（“EWT”）作业完成后，很高兴地确认发现了氦气，该作业成功地从裂缝的基底流出了持续平均值 5.5％ 的氦气（空气校正），并从断层的卡鲁群流出了持续平均值 5.2％ 的氦气（空气校正）。

要点

· 成功完成 ITW-1 的 EWT 作业，目前正在进行复员
· 断裂基底间隔向地面持续流动的氦气（空气校正）含量平均为 5.5%，最高可达 6.7% 氦气（空气校正）
· 断层卡鲁群间隔向地面持续流动的氦气（空气校正）含量平均为 5.2%，最高可达 7.9% 氦气（空气校正）
· 断裂基底间隔还向地面流动了高达 1.1% 的氢气
· 在 36/64 英寸节流阀设置下，该井以最大流量 2,701 桶/天（“bpd”）的流体自然流动，相当于每天 834 标准立方英尺（“scf/d”）的氦气
· 内部建模表明，在开发阶段，如果采用人工举升，流体产量可能会增加到 20,000 桶/天。在此基础上，公司估计，当应用平均浓度为 5.5% 的氦气时，实际流量将增加到 6,176 标准立方英尺/天的氦气
· 裂缝性基底间隔在溶液中氦气自然流动了六天，在确定为纯氦/氮混合物的情况下几乎没有空气污染
· 还收集了气体样本，以便在需要时进行额外的实验室分析
· 初步内部财务建模表明，采用人工举升和额外的开发井，项目经济效益良好
· 公司目前正在整合 EWT 的结果，并在提交采矿许可证 (ML) 申请之前完成可行性研究
· 在 ITW-1 的 EWT 作业期间，零损失工时伤害 (LTI) ·
公司拥有的 Epiroc Predator 220 钻机在 EWT 作业期间的非生产时间 (NPT) 为 2.5%

首席执行官 Lorna Blaisse 评论道：
“这是公司的又一个重要里程碑，我们很高兴在 EWT 期间成功地将高浓度的氦气从两个间隔流到地面。该井在测试期间自然流动，根据记录的流量，加上生产阶段的人工举升，这成为 Rukwa 南部全球重要的氦气项目。

我要感谢过去十二个月里辛勤工作的团队，他们确保我们作为一家公司克服了获得合适钻机的挑战，成功进行了两口井的勘探计划，成功对 ITW-1 进行了钻杆测试，然后迅速进入 EWT 阶段，以确定该项目的可行性。这是在很短的时间内取得的重大成就，我很高兴现在能够推动该项目向前发展，并使其更接近开发阶段。

公司对矿产部、矿业委员会和达累斯萨拉姆大学对该项目参与和持续支持表示感谢。我们还要向位于 Rukwa 南部的当地社区表示感谢，感谢他们在每个作业阶段给予的支持。”

详细信息
该公司现已成功完成 ITW-1 两个目标间隔的 EWT。第一个测试间隔是断层的 Karoo Group，其向地面持续流动平均 5.2% 的氦气（空气校正），最高 7.9% 的氦气（空气校正）。随后，现已对裂缝性基底间隔进行测试，并向地面持续流动平均 5.5% 的氦气（空气校正），最高 6.7% 的氦气（空气校正）。该井还从裂缝性基底间隔向地面流动高达 1.1% 的氢气。

裂缝性基底层段在溶液中含氦气的情况下自然流动了六天，在确定为纯氦/氮混合物的情况下几乎没有空气污染。在 36/64 英寸节流阀设置下，该井自然流动的最大流量为 2,701 桶/天的流体，相当于 834 标准立方英尺/天的氦气。公司的内部建模表明，在开发阶段，如果采用人工举升，这一流量可能会增加到 20,000 桶/天的流体。在此基础上，公司估计，当应用平均浓度为 5.5% 的氦气时，实际流量将增加到 6,176 标准立方英尺/天的氦气。

气体成分分析显示，5.2% 的氦气（未校正）与 1.6% 的氩气、4.9% 的氧气和 88.3% 的氮气有关。随后，该数据经过空气校正，得出 6.7% 的氦气。使用现场质谱仪评估这些结果，并由井场现场 PVT 实验室通过井下样本进行验证。

生产测井工具记录的井下温度测量高达 88°C，这与钻杆测试结果一致，很可能来自热的基底衍生流体。据信，这些流体优先沿着断层和裂缝携带溶液中的氦气，这些断层和裂缝来自基底源深处。

在完成穿过裂缝基底的 EWT 后，对两个间隔进行了短暂的混合测试。在整个 EWT 操作过程中，定期收集气体样本，并将在需要时用于额外的实验室分析。

整个 EWT 阶段没有发生过 LTI 事件。在 EWT 作业期间，公司拥有的 Epiroc Predator 220 钻机的 NPT 为 2.5%，相当于 21 小时的关键路径活动，并且完全在撒哈拉以南非洲偏远项目分配的“维护时间”之内。

后续步骤
公司进行的初步经济和地下建模表明，人工举升具有积极的经济效益，预计生产阶段将有 20 到 30 口开发井。公司地下团队将继续评估这些数据，并将其整合到可行性研究中，该研究将形成采矿许可证申请，并向坦桑尼亚矿业委员会证明 Itumbula 项目的可行性。申请将在未来两周内提交。

Helium One Global the primary helium explorer in Tanzania, is pleased to confirm a helium discovery following completion of its extended well test ("EWT") operations at Itumbula West-1 ("ITW-1") which successfully flowed a sustained average of 5.5% helium (air corrected) from the fractured Basement and flowed a sustained average of 5.2% helium (air corrected) to surface from the faulted Karoo Group.

Highlights

· Successful completion of EWT operations at ITW-1 and demobilisation now underway
· Fractured Basement interval flowed a sustained average of 5.5% helium (air corrected) to surface and up to a maximum of 6.7% helium (air corrected)
· Faulted Karoo Group interval flowed a sustained average of 5.2% helium (air corrected) to surface and up to a maximum of 7.9% helium (air corrected)
· The fractured Basement interval also flowed up to 1.1% hydrogen to surface
· The well flowed naturally at a maximum flow rate of 2,701 barrels per day ("bpd") of fluid on a 36/64ths of an inch choke setting which equates to 834 standard cubic feet per day ("scf/d") of helium
· Internal modelling demonstrates that this could increase to 20,000 bpd of fluid with artificial lift in the development phase. On this basis, the Company estimates the actual flow rate would increase to 6,176 scf/d of helium, when applying an average concentration of 5.5% helium
· The fractured Basement interval flowed naturally for a period of six days with helium gas in solution, and little air contamination in what has been determined to be a pure helium/nitrogen mix
· Gas samples were also collected for additional laboratory analysis when required
· Preliminary internal financial modelling demonstrates positive project economics with artificial lift and additional development wells
· The Company is now integrating the results of the EWT and finalising its feasibility study ahead of submitting a Mining Licence ("ML") application
· Zero Lost Time Injuries ("LTI") during the EWT operations at ITW-1
· Non-productive time ("NPT") for the Company owned Epiroc Predator 220 drilling rig during EWT operations was 2.5%

Lorna Blaisse, Chief Executive Officer, commented:
"This is yet another huge milestone for the Company and we are delighted to have successfully flowed helium, of significant concentration, to surface from both intervals during the EWT. The well was flowed naturally during the testing and based on the recorded flow rates, with the addition of artificial lift in the production phase this becomes a globally significant helium project in southern Rukwa.

I'd like to extend my thanks to the teams who have worked exceptionally hard over the past twelve months ensuring that, as a Company, we overcame the challenges of securing a suitable drilling rig, successfully delivered a two-well exploration programme, successfully carried out a drill stem test on ITW-1 and then moved very quickly into an EWT to establish viability for this project. This is a significant achievement in a very short time frame, and I am delighted to now be moving this project forward and bringing it a step closer to development.

The Company extends their thanks and appreciation to the Ministry of Minerals, the Mining Commission and University of Dar es Salaam for their engagement and ongoing support of this project. We'd like to also extend our appreciation to the local communities we work within in southern Rukwa for their support during each phase of the operations."

Details
The Company has now successfully completed its EWT at ITW-1 across the two target intervals. The first tested interval was the faulted Karoo Group which flowed a sustained average of 5.2% helium (air corrected) to surface and up to 7.9% helium (air corrected). Subsequently, the fractured Basement interval has now been tested and flowed a sustained average of 5.5% helium (air corrected) to surface and up to 6.7% helium (air corrected). The well also flowed up to 1.1% hydrogen to surface from the fractured Basement interval.

The fractured Basement interval flowed naturally for a period of six days with helium gas in solution, and little air contamination in what has been determined to be a pure helium/nitrogen mix. The well flowed naturally at a maximum flow rate of 2,701 bpd of fluid on a 36/64ths of an inch choke setting which equates to 834 scf/d of helium. Internal modelling by the Company demonstrates that this could increase to 20,000 bpd of fluid with artificial lift in development phase. On this basis, the Company estimates the actual flow rate would increase to 6,176 scf/d of helium, when applying an average concentration of 5.5% helium.

The gas compositional analysis of 5.2% helium (uncorrected) was associated with 1.6% argon, 4.9% oxygen and 88.3% nitrogen. This data was subsequently air corrected to yield 6.7% helium. These results were evaluated using an onsite Mass Spectrometer and verified from downhole samples by a field PVT laboratory at the well site.

Downhole temperature measurements recorded up to 88°C from the production logging tool, which is consistent with the drill stem test results and likely to be derived from hot Basement-derived fluids. It is believed that these fluids are carrying the helium in solution preferentially along faults and fractures from deep within the Basement source.

Following the completion of the EWT across the fractured Basement, a short co-mingled test of both intervals was conducted. Gas samples were collected at regular intervals throughout the EWT operation and will be used for additional laboratory analysis as and when required.

There were zero LTI incidents during the entire EWT phase. NPT for the Company owned Epiroc Predator 220 drilling rig during EWT operations was 2.5%, which equates to 21 hours of critical path activity and falls well within the allocated 'maintenance time' for a remote project in sub-Saharan Africa.

Next Steps
Preliminary economic and subsurface modelling by the Company demonstrates positive economics with artificial lift, and what is anticipated to be in the region of twenty to thirty development wells in the production phase. The data continues to be evaluated by the Company's subsurface team and will be integrated into a Feasibility Study, which will form the Mining Licence application, and demonstrate to the Mining Commission of Tanzania the viability of the Itumbula Project. The Application will be submitted in the next two weeks.