ARC Energy Spuds Centella 1 Gas Well

ARC Perth Basin Blocks
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ARC Energy has spud the gas well Centella 1 located in the onshore Perth Basin Production License L1 in Australia using the Century 11 drilling rig. Since spud, the well has been drilled ahead to 752 meters and 244 mm (9 5/8 inch) surface casing has been run.

The well is located approximately 6.5 kilometers east of the Hovea Production Facility and approximately 1.3 kilometers north of the Mondarra gas field. The well is being drilled directionally to allow flexibility for additional well locations from the same pad. The target bottom hole location is approximately 856 meteres southeast of the surface location.

The depth to the prognosed top of the primary objective Dongara Sandstone is approximately 2970 meters measured depth. The proposed total depth of the well is 3040 meters measured depth and it is expected to take 25 days to drill on a dry hole basis.

Participants in L1 and L2 (excluding the Dongara, Mondarra and Yardarino fields) and Centella 1 are: ARC Energy as operator with 50% and Origin Energy with 50%.

Managing Director's comment: "Centella 1 is the fourth of the gas exploration wells being drilled in our gas exploration program on our Perth Basin licenses. It will test a prospect which is well defined by 3D seismic data as were the recent discoveries at Xyris, Apium and Tarantula. The Centella closure also lies updip from the Mondarra 3 well which encountered good reservoir development in the Dongara Sandstone and had an oil recovery from this section."

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