The Perth-based company yesterday said the joint venture was pulling out of the hole with the drill stem test tool after carrying out open-hole DST-1 over the interval 1719- 1723.4m (corrected depth).
“The results of the drill stem test are inconclusive with the possibility of a misrun,” VicPet said.
“A full analysis of the drill stem test results will be available upon recovery of the tool at the surface.”
Open-hole DST-1 was run to test good oil shows observed in the target sands of the Birkhead Formation from 1717-1723.4m (corrected depth).
Wirraway-1 is designed to test a large, four-way dip closed structure on the western margin of the Cooper Basin.
The principal objective of the well is the Intra Birkhead sand, while secondary objectives are the Hutton and Poolawanna sandstones underlying the Birkhead Formation.
The prospect has a similar but larger structure to Growler and Wirraway-1 is the second well spudded by the current JV, which comprises VicPet (40%), Impress Energy (40%) and Roma (20%).
Wirraway-1 is 4km northwest and updip of the Growler-1 discovery, which found a 15m oil column and recovered 35 barrels of oil during an open-hole DST from the Birkhead Formation last September.
The Santos-operated Callabonna oil discovery, which recovered 17 barrels of oil in the Birkhead Formation back in 1990, is 15km west of Wirraway-1.
The JV has previously said the Wirraway prospect has the potential to contain 7.6 million barrels of P50 recoverable reserves in the Birkhead, while other Jurassic reservoirs were also prospective.
