Coal seam gas associated water production in Queensland: Actual vs predicted

- CSG in Qld is transitioning from ∼315 PJ/yr for domestic use to ∼1500 PJ/yr by 2019 driven by LNG export.
- Pre-production forecasts of peak produced water volumes have ranged from 120 to 300 GL/y.
- Current water production is ∼60.5 GL/yr with a history matched forecast peak of 70-80 GL/yr.
- Production is 25% of government and academia estimates and ∼70% of 2010-11 industry estimates.
- There has been underestimation of cumulative effects on depressurization from multiple assets.