Origin Prepares to Sidetrack Rockhopper-1 in Bass Basin



Origin Energy, on behalf of the T/18P Joint Venture, advised that on Thursday, January 7, 2010, the current operation at Rockhopper-1 is preparing to sidetrack the Rockhopper-1 well. Since the last report wireline logging operations have been completed and the well plugged below the kick-off point.

The sidetrack is designed to appraise the hydrocarbons encountered to date by intersecting the main reservoir sections approximately 1.3 kilometers south and down-dip from their penetration in Rockhopper-1, to assist in assessing the volume of oil and gas discovered in Rockhopper-1. It is anticipated that the sidetrack will take approximately 2 weeks to reach the primary reservoir section and a further 2 weeks to complete data acquisition and plugging and abandoning of the sidetrack and Rockhopper-1.