Cooper Energy, a 30% interest holder in PEL 494 (operated by 70% interest holder Beach Energy) in the Penola Trough, onshore Otway Basin, advised the production test of the Dombey-1DW1 gas exploration well production has been completed. As announced on 15 October 2019, Dombey-1DW1 encountered a gross gas column of 44.5 metres, with a net pay thickness of 25 metres, in the Pretty Hill Formation. Gas sample analysis indicates a low inert content. The production test was performed over the lower 20 metres of the Pretty Hill Formation gas column section. Flow testing occurred over 5 days in December and was followed by a shut-in period of 32 days. The flow test was performed to assess initial deliverability, minimum connected volumes and the presence of any reservoir boundaries. On flow, the maximum measured gas rate exceeded 18 MMscf/d indicating good reservoir productivity. Subsequent decline in flow test pressures during the test indicated potential for the Dombey-1DW1 borehole to be connected to a limited area. Interpretation of pressure measurements from the extended shut-in indicates re-pressurisation of the reservoir towards initial pre-flow conditions. This suggests potential for a larger gas pool than interpreted by flow test pressures. It is possible Dombey-1DW1 has drilled a small compartment partially connected to a broader accumulation. The Dombey structure is defined by a limited 2D seismic dataset. As a consequence, the subsurface structural definition is relatively poor. The Joint Venture is considering acquiring 3D seismic data to better define the gas field from which future Dombey appraisal plans, and exploration of the greater permit, may be based.