Highlights

  • TMK Energy reported average September 2026 gas production of 872 cubic metres a day, or about 30,800 standard cubic feet a day, at the Gurvantes XXXV pilot.
  • Average output during the final week of September reached about 33,400 standard cubic feet a day.
  • The company plans a workover of LF-03 and drilling of a new production well, LF-08, with rig equipment expected on site in mid-October 2026.
  • TMK said its gas-to-power project remains subject to final commercial arrangements and a final Investment decision targeted before the end of October 2026.

TMK Energy Limited (ASX:TMK) is an ASX-listed gas exploration company focused on its 100%-held Gurvantes XXXV coal seam gas project in Mongolia. Its September 2026 operations update reported a monthly production record from the pilot and outlined October work covering a well intervention, new drilling and the next gas-to-power decision point.

September Production Reaches a New Monthly High

TMK reported average gas production of 872 cubic metres a day during September 2026, equivalent to about 30,800 standard cubic feet a day. The company compared this with 810 cubic metres a day, or roughly 28,600 standard cubic feet a day, in August. It also said the final week of September averaged about 33,400 standard cubic feet a day.

Water production remained at about 425 barrels a day, while production uptime was high apart from occasional power interruptions. TMK identified LF-07 as the main well showing sustained gains and said multiple wells were recording higher gas rates. The update did not provide revenue, cumulative volumes or a commercial production forecast.

October Work Programme Focuses on LF-03 and LF-08

The 2026 field programme includes a workover of LF-03 followed by drilling of a new production well, LF-08. TMK said a workover rig was being mobilised while drilling-rig repairs continued in Ulaanbaatar. Equipment was expected on site in mid-October 2026.

At the date of the update, the LF-03 workover and LF-08 drilling had not been completed, so their impact on gas output remained unconfirmed.

Gas-to-Power Decision Remains Pending

TMK is also progressing its gas-to-power project with Dashvaanjil Group LLC. The company said it remained subject to final commercial arrangements and a final investment decision by both parties before the end of October 2026.

The update did not disclose project capacity, Capital cost, funding structure or detailed offtake terms. The targeted October decision is therefore a project milestone, not confirmation that development has been approved.

Operational Factors Still Matter

September figures are average output from a pilot project, not guaranteed future rates. Equipment availability, rig mobilisation, well performance and power Supply can affect operations. The drilling rig remained under repair at the time of the update.

The next stated milestones are the arrival and mobilisation of equipment in October, the LF-03 workover, drilling of LF-08 and the targeted gas-to-power investment decision before month-end.

Key Insights

TMK Energy's September 2026 update showed higher average gas output from the Gurvantes XXXV pilot, with the final week running above the monthly average. Attention now shifts to the October field programme and gas-to-power decision. The update does not quantify commercial Revenue or provide a timetable for full development.