Drill stem tests yielded less than pundits were anticipating. The Patchawarra Formation, which was present in a thin section in Yarrow-1, exhibited fair to good gas shows when penetrated over the weekend. A test over the primary target, the Tirrawarra Sandstones, recovered minor amounts of rat hole mud and water cushion.

The company said a lack of formation water indicated the Tirrawarra section to be gas saturated but there was low permeability leading the company to declare it was a tight reservoir.

Operations director Glen Smith said they would be testing the Patchawarra Formation at first light tomorrow.

At press time INP was trading at 80c.