Cooper Energy Limited reported that Worrior-11, an oil development well located in PPL 207 in the Cooper Basin, South Australia, has been cased and suspended after reaching a total depth of 1,669 metres in the Hutton Sandstone on 29 December 2016. The primary targets of Worrior-11 were the lower Birkhead Formation and the Hutton Sandstone. Almost half of cumulative production to date from the Worrior Field has been from the upper and mid Birkhead Formation. The rig was released Jan. 3, 2017. Worrior-11 was drilled directionally east-southeast from a surface location 75 metres south-southeast of Worrior-2 to a subsurface target location 150 metres north-northeast of Worrior-1 to increase overall field recoveries. A 5.2 metre net oil column is interpreted in the primary target lower Birkhead Formation/Hutton Sandstone interval. A further 3.9 metres of net oil in the mid-Birkhead Formation and 2.2 metres of net oil in the secondary target McKinlay Member are interpreted.