Tamboran Resources is celebrating a new milestone at its Shenandoah South 2H sidetrack (SS-2H ST1) well in the Beetaloo Basin, with the project achieving a record flow rate.
The project delivered an average 30-day initial production (IP30) flow rate of 7.2 million cubic feet per day (MMcf/d) over a 5,483-foot, 35 stage stimulated length within the Mid Velkerri B Shale.
The flow rate of 13.2 MMcf/d over an extrapolated 10,000-foot horizontal section is in-line with the average of more than 11,000 wells in the Marcellus Shale dry gas area with production for over a 12-month period.
The exit rate trajectory maintains a steady, low-declining curve at 6.7 MMcf/d – normalised at 12.2 MMcf/d per 10,000-feet – with a flowing wellhead pressure of ~910 psi. The steady state decline curve on SS-2H ST1 is consistent with that achieved from the SS-1H well.
The Shenandoah South drilling campaign is planned to commence in 2H 2025, targeting up to three 10,000-foot horizontal wells from the SS2 well pad, subject to final joint venture approval.
Once completed, the five wells on the SS2 pad are planned to be tied into the Sturt Plateau Compression Facility (SPCF) to feed into the 40 MMcf/d Gas Sales Agreement with the Northern Territory Government.
Production remains on track to commence in mid-2026, subject to standard regulatory and stakeholder approvals and favourable weather conditions.
Joel Riddle, Tamboran Resources Corporation CEO, said the Shenandoah South 2H sidetrack well has delivered a record average from the Beetaloo Basin to date.
“Results show a material step up in flow rate from a horizontal section stimulated approximately three times longer than the SS-1H well,” he said.
“The IP30 flow rate over a 5,482-foot horizontal section is another positive data point that demonstrates potential commercial productivity of the shale formation in the Australian East Coast gas market that typically sells at a premium to Henry Hub in the US and under long term CPI-linked contracts.
“Importantly, the results from SS-2H ST1 are in-line with the average of more than 11,000 wells produced for over 12-months in the Marcellus Shale dry gas area a, the most prolific shale gas basin in the world,” Riddle said.
“At the end of the 30-day period, the well continues to experience steady flow performance, low decline rates and favourable wellhead pressures, which underscore the reliability and scalability of our operations.”
Riddle said Tamboran continues to bring key lessons from the US to accelerate the commercial
development of the Beetaloo Basin.
“We have already delivered an impressive improvement in drilling efficiency and stimulation intensity in the first two wells of the Shenandoah South area.
“Lessons from the completion and flow back of the SS-2H ST1 well will be incorporated into the design of the remaining four wells required to deliver first gas sales in mid-2026, subject to standard regulatory and stakeholder approvals. SS-2H ST1 is another foundation well, that demonstrates the Beetaloo Basin has characteristics similar to wells drilled across the Marcellus dry gas area. We believe, like in the US, with more well results and incorporation of lessons we can improve and deliver this world-scale energy resource.”
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