Drillsearch Energy: Coorabie-1 Well Cased and Suspended (Australia)

Drillsearch Energy announced that the Coorabie-1 wet gas exploration well has been cased and suspended. A future evaluation program is being formulated for Patchawarra and Tirrawarra Formation wet gas bearing sands.

Coorabie-1 was the first well in a four-well wet gas exploration campaign in PEL 106B targeting the Patchawarra and Tirrawarra Formations located on the Western Flank of the South Australian Cooper Basin.

Drillsearch Energy holds a 50% interest in PEL 106B and Beach Energy as Operator holds 50%.

The well encountered good hydrocarbon fluorescence and gas shows in sands and coals throughout the Patchawarra Formation and Tirrawarra Sandstones. Wireline logging highlighted potential hydrocarbon bearing zones in sands in the Lower Patchawarra and Tirrawarra.

Subsequently a Drill Stem Test (DST) was run over a 10 metre Patchawarra sand interval with hydrocarbon florescence and elevated gas readings of 1,545 units between 2,757 to 2,767 metres.

Gas cut mud was reverse circulated out the well. A 4 litre sample chamber was also opened at surface and contained gas at 55 psi and 1 litre of gas cut mud. Although the DST data suggests this interval is tight.

A further 20 metre interval was intersected in the deeper Tirrawarra Formation (2,782-2,802 metres) which on mud logs indicated 100% moderately bright orange hydrocarbon fluorescence and elevated gas values. Based on hydrocarbon shows and wireline log data indicating multiple intervals, although tight are hydrocarbon bearing, the well is being cased and suspended for further evaluation of these zones.

The Ensign 930 rig will move 2.4km south west from Coorabie-1 to drill the second well in this campaign, Rosetta-1.

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LNG World News Staff, January 03, 2013; Image: Drillsearch Energy