Pressure data from the drill stem tests indicates the gas column extends for at least a further 30 meters below the Yarrow intersection which equates to an incremental 7 BCF recoverable gas.
Downstructure appraisal drilling will be required to delineate the full extent of the field in excess of the established 58 BCF gas and associated gas liquids.
In addition, the Merrimelia Formation, dominated by low porosity sandstone, is not credited with pay under current criteria but may contribute additional hydrocarbon production with stimulation. It is also anticipated that increased section in the Patchawarra Formation will be present downstructure and this interval is prognosed to contain additional pay sandstones.
Laboratory analysis of all gas samples recovered by the drill stem tests shows the gas composition is similar to adjacent gasfields except that the gas liquids component at Yarrow is higher.
An independent field reserves study of this liquids-rich gasfield has been initiated as the first step in a range of development scenarios under consideration. Participants in the PEL 103 Block Joint Venture are Innamincka Petroleum as operator with 35% and Vernon E Faulconer Australia Inc with the remaining 65%.
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