Oil and Gas News

Strike continues gas discoveries at West Erregulla-2

The Strike Energy-Warrego Energy joint venture has made another significant gas discovery in the High Cliff sandstone as part of the West Erregulla-2 drilling campaign.

Strike revealed that wireline logging tools have been run across the formation and long interpretation has been undertaken.

The High Cliff formation was encountered at 4918 metres with a gross gas column of at least 22 metres.

Strike announced that the entire 22 metres section is gas saturated with a net pay of 10 metres and an average porosity of 10.3 per cent and sections up to 16 per cent.

The well did not encounter a gas water contact in the High Cliff formation, which is consistent with the seismic amplitude model that support the interpreted field boundaries.

Strike managing director Stuart Nicholls said the addition of another material gas discovery in the West Erregulla-2 drilling campaign made it “truly outstanding results for the well.”

“West Erregulla-2 has finished drilling at 5100 metres and is now not only the deepest well in onshore Australia but has also discovered the deepest ever hydrocarbons,” Nicholls said.

“The presence of both gas and porosity at such depths add further significant value to the fast evolving Kingia-High Cliff conventional gas fairway within the Perth Basin.”

Looking ahead, Strike has completed drilling at West Erregulla-2 and is currently undertaking additional advanced logging.

The company said that a production completion will be run with perforations in the Kingia and High Cliff zones before conducting flow testing.

Strike has also provided an update on the Jaws pilot operations at its southern Cooper Basin gas project.

The company reported it has maintained the pressure in the Jaws wellbore and is closely monitoring the reservoir response and pump performance.

As expected, water rates have been naturally declining and the production of gas has been continuous.

Having gathered “sufficient data” under the constant wellbore pressure program and based upon the observed reservoir behaviour, Strike has said it will now transition Jaws into a controlled drawdown phase.

This is set to be delivered through a process of small, incremental pump speed changes and monitoring of reservoir responses.

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