• Flow rate of 4.9 MMscfd reached at conclusion of stimulation fluid flow back
• Flow test program commenced
• Independently certified gross 2C Contingent Resource of 37.7 Bcf (18.8 Bcf Net)

The ATP 2021 joint venture (Vintage Energy, 50% and operator, Metgasco Ltd 25% and Bridgeport 25%) advise that a strong gas flare continued to be observed throughout the whole of the flow-back period. Recovery of the injected stimulation fluids reached approximately 53%, with the gas rate reaching 4.9 MMscfd through a 42/64“ choke at a well head pressure of 680 psi. The well was shut-in once the recovery rate of stimulation fluid had dropped sufficiently for the well testing to commence. The well head pressure after shut-in built up quickly to ~3000 psi.

The flow testing of the well has now commenced. The testing will involve the following activities:

• Running a Production Logging Tool to determine gas contribution of each stimulated zone;
• Equal periods of shut-in and flow testing at various flow rates;
• Extended flow testing of around two days, during which time pressurised gas samples will be taken for laboratory analysis;
• Shut-in to observe the pressure response of the reservoir.

This sequence of testing events will allow for the estimation of the potential flow rate for the Vali-1 ST1 well. All of this information will be assessed and incorporated into a commercialisation plan for the asset, which will include an estimate of the number of development wells required to maximise returns from the Vali Field.

KeyFacts Energy: Vintage Energy Australia country profile   l   Bridgeport Energy Australia country profile   l   Metgasco Australia country profile