Strike Energy’s South Erregulla-1 gas discovery in the onshore North Perth basin permit EP503 has recorded one of the highest sustained flow rates in the region’s history with a sustained rate of 78 MMcfd over a 5-hour test of the key Kingia Sandstone reservoir, the company said.
The flow was recorded through a 78/64-in. choke with a flowing wellhead pressure of 2,590 psi.
Production at higher rates was limited by pipework in the testing packages. Strike said the results indicated high potential to produce at unrestricted rates over 100 MMcfd.
The company has been testing the producibility from 15 m of perforations across the reservoir at 4,844 m measured depth.
No sand or formation water has been observed to date and the gas stream comprises a low impurity dry gas with no hydrocarbon liquids produced during the test—in line with gas compositions from the Greater Erregulla region.
Strike is running a final flow period prior to shutting the well in for pressure build-up, which will be monitored by downhole gauges recording subsurface pressure.
Once testing equipment is demobilized, the company will begin preparations for production testing the shallower over-pressured Wagina Sandstone discovery in the same well, requiring mobilization of a workover rig to isolate and reset the tubing at the Wagina level.
South Erregulla is 100%-owned and operated by Strike.