Amplitude Energy Annie-2 Well Completed at 2,253m, Achieving Peak Flow Rate of 58.8 MMscf/day

Manish Choudhary

11 November 2026 12:32 PM AEDT

Amplitude Energy Annie-2 Well Completed at 2,253m, Achieving Peak Flow Rate of 58.8 MMscf/day

Image Source: Krish Capital Pty Ltd

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Amplitude Energy Limited (ASX:AEL) has completed drilling and flow testing at its Annie-2 development well in the offshore Otway Basin, reaching a total depth of 2,253 metres measured depth on 28 October 2026, with a peak surface-constrained flow rate of 58.8 MMscf/day recorded through a 60/64-inch choke.

Key Points

Annie-2 reached a total depth of 2,253 metres MD on 28 October 2026, with gross pay of 50 metres and net pay of 43.6 metres in the Waarre C formation sands
A peak surface-constrained flow rate of 58.8 MMscf/day was achieved, with an average stabilised rate of 57.2 MMscf/day over the main 8-hour-20-minute flow period
No formation water recovery was recorded or interpreted during the clean-up flow test
The Annie-2 well programme is ahead of schedule and budget, with no general contingency consumed to date across the East Coast Supply Project drilling programme

Annie-2 Flow Test Results and Reservoir Data

The clean-up flow test was conducted on 9–10 November 2026 over a total flowing time of approximately 18 hours, producing a total gas volume of 35.9 MMscf and 37.1 barrels of condensate. The main flow period ran for 8 hours and 20 minutes, with an average bottom hole flowing pressure of approximately 3,200 psi and no pressure depletion observed. The peak flow rate was constrained by surface test equipment, not well deliverability, according to the filing. CO2 composition from Annie-2 flowback sample analysis was in line with Annie-1 at approximately 7 mol%, with no material volumes of other non-hydrocarbon gases recorded.

Well Location and Annie Field Contingent Resource

Annie-2 is a development well located in permit VIC/L37 within Commonwealth waters, approximately 10 kilometres north of its planned tie-in point to the existing CHN pipeline. Amplitude Energy operates the well with a 50% working interest; joint venture partner O.G. Energy holds the remaining 50%. The Annie discovery was originally made in 2019, with the Annie-1 well encountering a high-quality, gas-bearing Waarre C reservoir. Amplitude Energy has recorded a gross Contingent Resource of 65 PJ, or 32.4 PJ net to AEL, for Annie on a 2C basis. The filing states no estimate of petroleum reserves or contingent resources is being reported in this update.

East Coast Supply Project Drilling Programme Progress

Following completion of operations at Annie-2, the Transocean Equinox rig is expected to move to the Nestor exploration prospect to drill the final well in the East Coast Supply Project drilling campaign. The Annie-2 well has been cased and completed with a sub-sea tree and is being suspended ahead of development as part of the ECSP. Managing Director and CEO Jane Norman stated that results to date are consistent with, or above, the company's pre-drill volume expectations, and that costs for both the Juliet and Annie wells are well below budget. Interpretation of Annie-2 data is ongoing and remains subject to further logging, testing and evaluation.

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