Ann: March 2020 Quarterly Report, page-8

Actually, there is also gas coming from Cooper Basin too. 29TJ is only for Surat Basin.

'In the Cooper Basin, oil and gas production of 230 kboe was 4% higher than the prior quarter. Natural oil field decline was offset by an 82% increase in gas and gas liquids production to 64 kboe due to the first full quarter of production from the Gemba field'.

If my calculations are correct 64 kboe per quarter works out to be 4.3TJ per day coming from gas wells in Cooper Basin (2TJ for Gamba).