Dongara 33 Flow Tests at High Rates

ARC Energy reports that drilling and completion of the oil and gas appraisal well Dongara 33 located in the Dongara Field in onshore Perth Basin Production License L2 has been completed. The well was drilled using Century Rig 11, to a total depth of 1,897 meters in 152 mm (6") hole after setting a 178 mm (7") liner above the main objective Arranoo Sandstone at 1,672 meters measured depth. The reservoir section was encountered close to prognosis with good hydrocarbon shows.

A single lateral bore was then drilled from the main bore to 1,908 meters measured depth. The two well bores have given a total of 465 meters of contact with the reservoir. The well was then completed with 73 mm (2 7/8") production tubing.

A clean up flow was then conducted with final flow rates estimated to be in excess of 8.1 million cubic feet per day (mmcfd) on a 40/64 inch (16 mm) choke at a flowing surface pressure of 860 psi.

The rig will now be moved to drill the Yardarino 6 well as an appraisal of the Elegans Field as recently tested by the Corybas 1 well.

ARC has further recommended to the L14 and L1/L2 joint ventures that the next well after Yardarino 6 should be either an appraisal/development well on the Jingemia oilfield or a further appraisal of the Elegans Field (Hakia 2). The well order will be subject to timing of obtaining the requisite joint venture and regulatory approvals.


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