Red Sky Energy (ASX:ROG) has disclosed that stimulation of Yarrow 4 and Yarrow 5 wells in PRL 17, Innamincka Dome, Cooper Basin, South Australia, is expected to commence on 27 November 2026, with the Yarrow North 1 stimulation scheduled to follow on 30 November – 1 December 2026, as advised by operator Santos (ASX:STO).

Key Points

  • Stimulation of Yarrow 4 and Yarrow 5 is expected to commence 27 November 2026, with operations scheduled over 27–29 November 2026, covering the Patchawarra Formation and Tirrawarra Sandstone.
  • Yarrow North 1 stimulation is scheduled for 30 November – 1 December 2026, immediately following Yarrow 4 and Yarrow 5.
  • Yarrow 4 and Yarrow 5 are expected to be tied in to the existing Yarrow gathering system and online by mid-December 2026; any tie-in of Yarrow North 1 is not expected before 2027.
  • Red Sky's share of the Yarrow AFE is approximately A$2.0 million and its share of the Yarrow North 1 AFE is approximately A$0.6 million; the company is funded for its share of the current program.

Stimulation Schedule and Well Formation Details

Santos, which holds an 80% working interest and operates the wells, has advised that Yarrow 4 and Yarrow 5 will be stimulated over the Patchawarra Formation and the Tirrawarra Sandstone — the two reservoirs in which gas pay was intersected. Red Sky holds a 20% working interest. The disclosed dates are estimates only and are subject to change dependent on equipment availability, weather, access windows and operational scheduling. Red Sky stated it will update the market when stimulation commences and when the wells are brought online. No production testing has been carried out at Yarrow 4 or Yarrow 5, and flow rates and deliverability cannot be determined until the wells are stimulated, completed and tested.

Tie-In Expectations and Yarrow North 1 Decision Process

Following stimulation, Yarrow 4 and Yarrow 5 are expected to be tied in to the existing Yarrow gathering infrastructure and brought online by mid-December 2026. For Yarrow North 1, a decision on tie-in will be made following flowback — the period after stimulation in which the well is flowed to clean up and assess its performance — with any tie-in not expected before 2027. Yarrow 1 and Yarrow 3 are currently producing gas into the Santos-operated gas-gathering, pipeline, and processing infrastructure that connects directly to the Moomba facility.

AFE Funding and Innamincka Dome Working Interest

Red Sky's approximately A$2.0 million share of the Yarrow AFE covers stimulation, completion and connection of Yarrow 4 and Yarrow 5. Its approximately A$0.6 million share of the Yarrow North 1 AFE covers re-entry, stimulation and, if it proceeds, tie-in of that well. The company disclosed it is funded for its share of the current program. Red Sky holds a 20% working interest across six PRLs — 14, 17, 18, 180, 181 and 182 — within the Santos-operated Innamincka Dome Joint Venture in the Cooper Basin.