Amplitude Energy deems Isabella gas discovery non-commercial

Amplitude Energy has determined that the Isabella state find successful the VIC/L24 licence successful the Otway Basin offshore Victoria is not commercially viable.

This follows the completion of a travel trial and unit build-up investigation connected the ST-1 sidetrack well.

Pressure depletion recorded during the investigating play does not enactment commercialized improvement of the Isabella tract astatine its existent location.

The ST-1 well, drilled arsenic a sidetrack from the earlier Elanora-1 good wrong licence VIC/L24 successful Commonwealth waters, intersected state successful the Waarre C reservoir.

The good was subsequently cased and completed connected 8–21 March, earlier undergoing a travel trial to estimation assets volumes.

Flow investigating recorded a highest surface-constrained travel complaint of 60 cardinal modular cubic feet per time (mscf/d) done a 64/64in choke.

Over 2 flowing periods with a combined duration of astir 22 hours, a full state measurement of 40.2mscf and 22.3 barrels of condensate were produced.

The main travel play of 8 hours averaged a stabilised state complaint of 46.4mscf/d astatine an mean flowing bottommost spread unit of 2,639 pounds per quadrate inch absolute.

Amplitude Energy, which holds a 50% operating involvement successful VIC/L24, is acceptable to plug and wantonness the ST-1 good implicit the coming days.

Once that enactment is complete, the institution volition merchandise the Transocean Equinox rig to the adjacent subordinate of the offshore Otway Basin rig consortium. O.G. Energy holds the remaining 50% involvement successful the associated venture.

Amplitude Energy managing manager and CEO Jane Norman said: “The effect astatine Isabella is disappointing but geological information from this good volition assistance pass our aboriginal exploration prospects. Isabella was a ample and prospective people for the East Coast Supply Project (ECSP); however, its size besides corresponded with reservoir complexity, meaning it volition necessitate clip to construe the drilling accusation received.

“The effect astatine Isabella does not interaction our presumption connected the probability of occurrence of different Otway Basin exploration prospects, which person simpler geology.”

The institution confirmed determination is nary alteration to the ECSP drilling programme, task fund oregon the archetypal state people of 2028.

A last concern determination for the ECSP improvement signifier volition beryllium deferred until aft consequent wells are drilled, which is expected successful the 2nd fractional of 2026. The Elanora-1/ST-1 good programme has remained wrong budget.

Amplitude Energy volition analyse drilling and travel trial information from some the Elanora and Isabella wells implicit the coming months. The Isabella tract is situated astir 6km south-west of the producing Casino state field.