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.

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.

Commenting on the well, Cooper Energy Managing Director, David Maxwell, said "this is a very pleasing result which supports the remaining production and development potential in the Worrior oil field".

Cooper Energy Limited holds a 30% interest in PPL 207, with the balance held by the Operator, Senex Energy Limited.