Mar. 2013 - The ConocoPhillips-operated Zephyros-1 well has been drilled to a total depth of 17,624 feet and wireline logging operations have commenced. Coring activities recovered 354 feet of reservoir sands to surface. The sands are reported to be of good quality with high permeability. Geology of the well appears to be similar to the successful Kronus-1 due to which ConocoPhillips and Karoon feel a production test is not needed. The well was drilled by the Transocean Legend (mid-water semisub). Upon completion of logging operations the rig will mobilize to the Proteus prospect in license WA-398-P.

Mar. 2013 - In a recent update concerning Zephyros-1, Karoon announced plans to begin coring operations after encountering a drilling break in the exploration well. Upon completion of coring activities, drilling will continue to the proposed total depth of 17,618 feet. The Transocean Legend (mid-water semisub) is drilling the well which is operated by ConocoPhillips. Zephyros-1 is located in WA-398-P and is the second well in the company's current exploration program, which consists of a minimum of five wells. Once Zephyros-1 operations are complete, the rig will mobilize to the Proteus prospect in the same license.

Nov. 2012 - Joint Venture partner Karoon Gas Australia announced the spudding of Zephyros-1, an exploration well in permit WA-398-P. The well is being drilled on the border of a large tilted fault block and will test the presence, quality and extent of reservoirs in the Plover formation. ConocoPhillips, the operator, has contracted the Transocean Legend (mid-water semisub) to carry out the drilling program which includes a minimum of 5 wells and will continue through 2013. Zephyros is the second well to be drilled and follows the highly successful Boreas-1 well. The remaining wells will be announced as they reach joint venture approval.

Jun. 2012 - ConocoPhillips is moving forward with drilling of the Boreas-1 exploratory well in WA-314-P following the final function testing of the blowout preventers for the semisub Transocean Legend (mid-water semisub). The BOPs and marine riser were run to the sea floor, and after function testing, were pulled from the hole for further repair and maintenance. After passing all checks on the surface, they have been re-run to the seafloor for final subsea function testing. The company will drill the second well in the program, Zephyros-1, in permit WA-398-P approximately 4.9 miles (8 kilometers) southwest of the Kronos-1 discovery location. The third well, Proteus-1, will be drilled in WA-398-P approximately 8.6 miles (14 kilometers) southeast of the Poseidon-1 discovery location.