Ann: Sprigg-1 Exploration Well Update 3 , page-8

"Current Depth:
Total depth of 2,472 metres reached at 0730 hrs on 20/10.
Operations:
Run 7” casing, install wellhead and rig down.
Participating Interest:
Senex Energy Limited 80% (Operator).
Planet Gas 20% (free carried).

The Ensign Rig 754 successfully intersecting 6.3 metres interpreted net pay in the Murta Formation with hydrocarbon shows and fluorescence in the Arrabury and Birkhead Formations.
Further cased hole tests will be undertaken subject to rig availability."

Yes 6.3 metres and that 6.3m. = 20'8" and a 1/32" thrown in for good measure lol.
The pedant in me finally succumbed to rereading invertedva and Cham's 6.1metre net oil pay in the Murta Form' posts.
If I read today's ann accurately the 7" production casing is in place and time [and rig availability] will soon demonstrate the more important oil flow rate, than the extra 20cm.