Amplitude Energy Limited（ASX：AEL，简称“Amplitude Energy”或“本公司”）就维多利亚州奥特威盆地近海伊莎贝拉（Isabella）油田的钻井作业提供以下最新信息。

伊莎贝拉油田位于联邦水域的VIC/L24许可证区域内，在正在生产的Casino油田西南方向。Amplitude Energy是VIC/L24许可证区域的作业者，并持有50%的权益，OG Energy持有剩余的50%权益（合资企业）。伊莎贝拉油田的钻探计划是从之前的Elanora-1井进行侧钻（T1）。

截至目前的结果：
正如2026年3月2日宣布的那样，ST-1井8英寸井段于2026年3月1日钻穿了主要目标储层Waarre C。

2026年3月3日至6日期间，通过电缆测井进行了地层评价，以收集压力和样品数据。迄今为止从ST-1井收集的初步数据显示，Isabella储层具有较高的产能和较低的二氧化碳含量（估计约为5 mol%）。

目前，气水界面被解释为位于Waarre C储层交汇处下方，迄今为止的技术结果表明，潜在的天然气储量可能大于仅由Waarre C储层交汇处所暗示的储量，这支持合资企业推进流动测试，以确认最小天然气储量和储层压力。Elanora

-1/ST-1井计划目前在合资企业批准的进度和预算范围内进行。

井完井及流量测试
合资企业已批准ST-1井的套管完井作业，随后将进行流量测试，以估算资源量，并进行进一步的实验室分析以确认气体成分。这些工作预计将在两周左右完成。

在评估流量测试和气体成分数据后，将对伊莎贝拉勘探区的开发做出最终决定。如果相关信息不支持商业开发，该井将被封堵废弃。

根据澳大利亚证券交易所上市规则5.30的要求，相关技术信息已在本公告的附录中提供。

Amplitude Energy Limited (AEL: ASX, 锟紸mplitude Energy锟� or 锟絫he Company锟�) provides the following update on drilling operations at the Isabella prospect in the Offshore Otway Basin, Victoria.

The Isabella field is located in permit VIC/L24 within Commonwealth waters, south-west of the producing Casino field. Amplitude Energy is operator and 50% interest holder in VIC/L24 with O.G. Energy holding the remaining 50% interest (the 锟絁oint Venture锟�). The Isabella field is being drilled as a planned sidetrack (锟絊T1锟�) from the earlier Elanora-1 well.

Results to date
As announced on 2 March 2026, the ST-1 8 锟�-inch hole section penetrated the primary Waarre C reservoir target on 1 March 2026.

A formation evaluation program via wireline logging was conducted between 3 - 6 March 2026 to collect pressure and sample data. Preliminary data collected from ST-1 to date implies high deliverability and low CO2 levels (estimated at approximately 5 mol%1 ) in the Isabella reservoir.

The gas water contact is currently interpreted as being below the Waarre C reservoir intersection, with technical results to date indicating potential for a larger gas accumulation than that implied by the Waarre C reservoir intersection alone, which supports the Joint Venture progressing to a flow test to confirm minimum gas volume and reservoir pressure.

The Elanora-1/ST-1 well programme is currently within the Joint Venture-approved schedule and budget.

Well completion and flow test
The Joint Venture has approved the casing and completion of ST-1, followed by a flow test to inform resource volume estimates and further laboratory analysis to confirm gas composition. These activities are expected to be completed over approximately two weeks.

A final decision regarding the development of the Isabella prospect will be made following evaluation of the flow test and gas composition data. Should the information not support commercial development, the well will be plugged and abandoned.

Technical information required by ASX Listing Rule 5.30 is provided in the Appendix to this announcement.