Vesta-1 and Vesta-2 wells (Vesta-1 & 2) were drilled by Eni Australia Limited (Eni) as part of exploration activity in Permit Area AC/P 21 in 2005 and 2007 respectively.  The AC/P 21 Permit Area is in Commonwealth waters off the north western Australian coast, about 151 km to the east of Ashmore Reef and Cartier Island and approximately 687 km west-northwest of Darwin.  Following drilling and associated testing, the two wells were plugged and abandoned with the well heads left in place. The two Vesta wells are located in slightly over 100 metres (m) of water depth, with the well heads originally extending approximately 3-4m above the surrounding seabed. The wells have remained undisturbed since the original drilling campaigns and it is anticipated the well heads will now be covered by marine growth.The abandonment measures that were put in place for the wells have been reviewed and assessed by the National Offshore Petroleum Safety and Environmental Management Authority (NOPSEMA) as meeting the requirements for permanent abandonment, consistent with regulation 5.17(c) of the Offshore Petroleum and Greenhouse Gas Storage (Resource Management and Administration) Regulations 2011. An End of Well Abandonment Report (EOWAR) and Well Operations Management Plan (WOMP) describing the abandonment of the wells were submitted to NOPSEMA, and on 28 September 2016 NOPSEMA advised Eni they were reasonably satisfied that the process of abandoning the wells had been undertaken in accordance with the WOMP.The Activity involves permanent (in perpetuity) abandonment of the Vesta-1 & 2 wells.  As the ongoing integrity of the wells has been assured by the previous WOMP activities, no further operations are proposed in relation to the Vesta-1 & 2 wells, including well heads, which will be abandoned in situ.