Australia: EWC Updates on Sheoak-2 Drilling

Australian Gasfields Limited, a wholly owned subsidiary of Energy World Corporation, spudded Sheoak-2 on 26th April 2013 in ATP 549P S in the Cooper-Eromanga Basin in SW Queensland. A TD of 2401 mRT was reached on Saturday 11th May 2013.

A successful straddle Drill Stem Test was completed over targeted Permian Toolachee Formation reservoir sands between packer seal depths of 2255.72 and 2270.68 mRT on Thursday 16th May.

This 15 metre zone returned gas to surface, and flow rates reached a maximum of 298.4 mscf at 30.5 psig after 26 minutes flow from initial shut in through a 14″ choke.

Sheoak-2 recorded live hydrocarbon shows in the basal Birkhead Formation at 1740 mRT. Hydrocarbon shows continued through the Birkhead Formation to the top of the Hutton Sandstone at 1769.9 mRT.

The Hutton Sandstone had fluorescence observed in drill cuttings from 1769.9 to 1821 mRT. Fluorescence descriptions from cuttings over this interval include “bright yellow ‘live’ fluorescence” with 90-100% of aggregated sample showing “dim to occasionally bright yellow fluorescence”. Total thickness of the Hutton Sandstone in Sheoak-2 is 125 metres measured depth.

Hydrocarbon shows continued in the Hutton Sandstone from 1821 mRT to the top of the Poolowanna Formation at 1906 mRT.

Sheoak-2 is currently being cased and suspended, pending further future testing of oil shows intersected in the Hutton Sandstone during drilling.

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LNG World News Staff, May 20, 2013; Image: EWC