坦桑尼亚的主要氦气勘探公司 Helium One Global 欣然宣布，Itumbula West-1 (“ITW-1”) 井的作业于 2024 年 7 月 26 日开始。

亮点·

ITW-1 的钻井作业已在计划的扩展井测试 (“EWT”) 之前开始·
计划测试两个间隔：断裂的基底和断层的 Karoo，此前在 2024 年 2 月的钻杆测试 (“DST”) 期间成功将 4.7% 的氦气流到地面· 在进行
EWT 之前，将进一步将井深挖到基底
· 地质学家在钻井过程中进行泥浆记录和测试以监测氦气显示，在钻出 9 英寸鞋并重新进入原始井眼时已经观察到上述氦气和氢气的背景迹象·
便携式质谱仪和现场压力-体积-温度专家在现场测量和验证氦气显示以及来自 EWT 的井下样品
· 全球技术公司 SLB（前身为斯伦贝谢）签订合同并现场提供流体服务，地面井测试设备目前正在运往作业地点
· 预计从开钻到 EWT 完工的第三阶段作业大约需要五周时间

首席执行官 Lorna Blaisse 评论道：
“我们很高兴开始第三阶段的作业，并热切期待 ITW-1 的 EWT 结果。2024 年 2 月的 DST 结果非常令人鼓舞，该井成功地从裂缝基底流出 4.7% 的氦气和 2.2% 的氢气，我们现在期待全面评估这一油田。在 EWT 之前，团队一直在进行地下建模，结果将整合到可行性研究中。

随着我们加深油井并开始断层裂缝氦气油田最重要的测试阶段，我们期待在适当的时候发布进一步的公告。我们很高兴能够

在坦桑尼亚领导这项旗舰氦气井测试，并非常感谢矿产部、矿业委员会和达累斯萨拉姆大学对该项目的认可和支持。我们还要感谢当地社区和地区政府对我们在南鲁夸开展工作的持续合作。”

背景和更多信息
ITW-1 井作业于 2024 年 7 月 26 日成功开始。该公司已钻出 9 英寸鞋轨，目前正在进入原始的 8 英寸孔，随后公司将在 EWT 之前继续钻探以进一步加深井深。在钻出 9 英寸鞋轨并重新进入原始井眼后，公司观察到氦气和氢气流向地面，高于背景水平。

继 2024 年 2 月成功进行 ITW-1 钻杆测试后，4.7% 的氦气和 2.2% 的氢气从裂缝的基底流向地面，公司正准备测试两个间隔。这些将是井最深处的裂缝基底间隔，以及断层的 Karoo 部分。钻井后，将下入开槽套管并进行水泥固定，然后在开始 EWT 之前安装完井管柱。如果 EWT 成功，该井将暂停生产。

在测试阶段，将监测氦气和氢气的测量值，以及流量、压力和储层性能。该公司有能力在现场收集和测量气体样本，并能够实时验证气体成分。EWT 的结果将被整合到一个详细的地下动态模型中，该模型将用于确定资源估计并制定更广泛的可行性研究的一部分。从开钻到完成两个区域的扩展井测试的整个过程预计需要大约五周的时间。

本公司将在适当时候作出进一步公告。

Helium One Global, the primary helium explorer in Tanzania, is pleased to announce that operations at the Itumbula West-1 ("ITW-1") well commenced on 26 July 2024.

Highlights

· Drilling operations have commenced at ITW-1 ahead of the planned extended well test ("EWT")
· Plan to test two intervals: the fractured Basement and faulted Karoo, following the successful flow of 4.7% helium to surface during the drill stem test ("DST") in February 2024
· Prior to undertaking the EWT, the well will be deepened further into the Basement
· Geolog undertaking mudlogging and testing whilst drilling to monitor helium gas shows, with above background indications of helium and hydrogen already observed whilst drilling out the 9?" shoe and re-entering the original wellbore
· Portable mass spectrometer and field pressure-volume-temperature specialist on site to measure and validate helium gas shows as well as downhole samples from EWT
· Global technology company, SLB (formerly Schlumberger) contracted and onsite for fluid services with surface well testing equipment currently on route to operating location
· Phase III operations from spud to completion of EWT is anticipated to take approximately five weeks

Lorna Blaisse, Chief Executive Officer, commented:
"We are very pleased to have commenced our Phase III operations and eagerly anticipate the results of the EWT at ITW-1. The results from the DST in February 2024, whereby the well successfully flowed 4.7% helium and 2.2% hydrogen, to surface from fractured basement, were very encouraging and we look forward to now fully evaluating this play. The team have been working on the subsurface modelling ahead of the EWT and the results will be integrated into the feasibility study.

We look forward to making further announcements in due course as we deepen the well and commence the all-important testing phase of the fault-fracture helium play.

We're very pleased to be leading this flagship helium well test in Tanzania and would very much like to thank the Ministry of Minerals, the Mining Commission and the University of Dar es Salaam for their recognition and support of the project. We would also like to thank our local communities and regional Government for their continued co-operation in the work we are doing in southern Rukwa."

Background and further information
The ITW-1 well operations were successfully commenced on 26 July 2024. The Company has drilled out the 9?" shoe track and is currently entering the original 8½" hole, following which the Company will be drilling ahead to deepen the well further into the Basement prior to the EWT. Upon drilling out the 9?" shoe track and re-entering the original wellbore, the Company observed above background levels of helium and hydrogen flowing to surface.

Following the success of the ITW-1 drill stem test in February 2024, where 4.7% helium and 2.2% hydrogen flowed to surface from the fractured Basement, the Company is preparing to test two intervals. These will be the fractured Basement interval in the deepest section of the well, as well as the faulted Karoo section. After drilling, slotted casing will be run and cemented followed by the installation of a completion string prior to the commencement of the EWT. If the EWT is successful, the well will be suspended as a future producer.

During the testing phase, helium and hydrogen gas measurements will be monitored, along with flow rates, pressure and reservoir performance. The Company has the ability to collect and measure gas samples onsite and will be able to verify gas composition in real-time. The results from the EWT will be integrated into a detailed subsurface dynamic model, which will be used to determine resource estimates and formulate part of a wider feasibility study. The whole process from spud to completion of extended well testing across the two zones is expected to take approximately five weeks.

The Company will make further announcements as and when appropriate.