Zola-1 hits more natural gas in the Carnarvon Basin offshore Western Australia

Source: Tap Oil

According to a release from project participant Tap Oil (ASX:TAP), the Zola-1 exploration well has discovered more natural gas offshore the Carnarvon Basin in Western Australia

Still in the drilling process, the Zola-1 well has intersected additional reservoir quality gas sands on interpretation of data gathered while drilling (mud log and logging while drilling). To date, the well has intersected over 100 meters of gas-bearing sandstone (true vertical thickness). 

Forward operations at this stage are to drill through the upper Mungaroo Formation (including the secondary target) to the final well depth as planned. A full suite of wireline logs is planned to be run when the well is at total depth. 

The Zola-1 well is located in permit WA-290-P, immediately south of the giant Gorgon gas field in the Carnarvon Basin, Western Australia. The well is being drilled in 285 meters of water. The well is expected to be drilled to a target depth of approximately 5,000m. 

Zola Prospect 

The Zola prospect is a very large Triassic tilted fault block on trend with the giant Gorgon gas field. One of the largest undrilled structural features in the Carnarvon Basin, Zola is covered by high quality newly reprocessed 3D seismic data and is considered a moderate risk prospect. Zola is estimated by Tap to contain mean recoverable gas volumes of 1.0 trillion cubic feet with upside potential for 2.0 trillion cubic feet. The well will test the gas potential of several top and intra Mungaroo Formation sands – the primary reservoir at Gorgon. In addition it is possible that some Jurassic reservoirs may be developed flanking the main Triassic structure.

Previous drilling in WA-290-P focused on the shallower Jurassic and Cretaceous interval, resulting in the Antiope gas discovery in 2000 and the minor Lauda oil discovery in 2005. 

Located close to existing and developing gas infrastructure, Zola would have multiple potential development options should it be a discovery. Any development at Zola could also encompass the overlying Antiope gas discovery (estimated at ~120 Bcf). 

Apache serves as the operator with 30.25 percent interest. Project partners include Tap Oil with 10 percent, Santos with 24.75 percent and OMV Australia with 20 percent.

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