Bass Oil Limited (ASX:BAS): September Production Rises as Bunian 6 Starts Operating

Aditi Sarkar

15 October 2026 08:18 PM AEDT

Bass Oil Limited (ASX:BAS): September Production Rises as Bunian 6 Starts Operating

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Highlights

Group output reached 10,285 barrels in September 2026, including 7,861 barrels from Indonesia.
September sales revenue net to Bass was A$1,686,790.
Bunian 6 commenced production from the M sand on 23 September.
Cooper Basin oil sales resumed following road-related transport interruptions.
Vanessa gas recommissioning advanced, with start-up dependent on remaining approvals and testing.

Bass Oil Limited (ASX:BAS) is an Australian-listed oil and gas producer with operations in the Cooper Basin and South Sumatra, Indonesia. Its September 2026 update describes higher group oil production following the commissioning of Bunian 6, resumed Cooper Basin trucking and further work towards restarting the Vanessa gas field.

September Production and Sales

Bass Oil (ASX:BAS) reported 10,285 barrels of group oil production net to the company during September, equivalent to approximately 343 barrels per day. The monthly total increased 59% from August, according to its operations update. Total sales reached 11,242 barrels, comprising 7,270 barrels in Indonesia and 3,972 barrels in the Cooper Basin.

Indonesian production totalled 7,861 barrels, or approximately 262 barrels per day, representing a 93% increase from August. Cooper Basin production was 2,424 barrels, equivalent to approximately 81 barrels per day. Bass Oil (ASX:BAS) reported sales revenue net to the company of A$1,686,790, an increase of 136%. The update does not give sufficient operating-cost information to calculate a corresponding monthly earnings result.

Bunian 6 Adds Indonesian Output

The Bunian 6 drilling rig was released on 7 September 2026, and the well was brought online from the M sand on 23 September. Bass Oil (ASX:BAS) reported an initial flow rate of 797 barrels of oil per day, with a 1% water cut, 410 psi flowing tubing head pressure and an 11 millimetre choke.

The company said total field production subsequently stabilised at about 700 barrels per day compared with approximately 250 barrels per day beforehand. Its attributable field share was described as roughly 385 barrels per day compared with around 140 previously. The longer-term effect on reserves and the production strategy remains subject to further technical analysis.

Cooper Basin Activity and Gas Preparations

Trucking resumed in the Cooper Basin in early September following road closures in August. That resumption helped lift reported sales and reduce accumulated oil stocks. Bass Oil (ASX:BAS) also continued recommissioning activity at its 100%-owned Vanessa gas field, including a pipeline coating survey that identified no defects, generator servicing and pressure safety valve recalibration.

The company was preparing regulatory restart documentation and scheduled pipeline hydro-testing work for November 2026. Vanessa start-up was targeted for the end of 2026, but remains conditional on regulatory approvals and successful completion of site work. The project includes a 5 kilometre connection to the Cooper Basin gas network.

Kiwi Studies and Exploration Programme

At the 100%-owned Kiwi 1 prospect, an updated pre-front-end engineering and design study was progressing, with two possible tie-in arrangements under evaluation. The work is intended to inform subsequent engineering and a potential final investment decision; no such decision was reported in the September update.

In PEL 182, a joint venture led by Santos was pursuing deep-coal appraisal after drilling and stimulating Jack Lake 8. Separately, reprocessing of the Dundinna 3D seismic data identified structures along the Kiwi trend, including Kiwi North. Bass Oil (ASX:BAS) has not reported commercial production from these opportunities in the September update.

Key Insights

The September 2026 figures show that Indonesian production and resumed Australian sales both contributed to higher reported activity. Bunian 6 adds an operating well, while Vanessa and Kiwi remain at different stages of technical, regulatory and development work. Further disclosures will be needed to establish operating costs, sustained well performance and the timing of any gas sales.

FAQs

Q: What did Bass Oil produce in September 2026?

A:Group production totalled 10,285 barrels net to Bass, including 7,861 barrels in Indonesia.

Q: When did Bunian 6 begin producing?

A:The well commenced production from the M sand on 23 September 2026.

Q: How much sales revenue was recorded?

A:Bass Oil reported A$1,686,790 in sales revenue net to the company for September.

Q: What is the status of Vanessa?

A:Recommissioning was under way, with hydro-testing and regulatory requirements outstanding.

Q: Has Kiwi reached a final investment decision?

A:No. Engineering and tie-in options were still under evaluation in the September update.

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