On 21 December 2017 Eni Australia Ltd (Eni) reported that the 32.5% operated interest held by Shell Australia Pty Ltd (Shell) in NT/RL7, covering the Evans Shoal 1 discovery located in the Bonaparte Basin, had been transferred to Eni. All relevant approvals from the Government and joint venture partners, which include Petronas Carigali (Australia) Pty Ltd (25%) and Osaka Gas Australia Pty Ltd (10%), have been granted, taking Eniâs operated interest to 65%. The deal was lodged by the companies on 14 December 2017, and was subsequently completed and registered with the National Offshore Petroleum Titles Administrator (NOPTA) on 21 December 2017.  The retention lease covers the 1988 Evans Shoal 1 discovery, estimated to have 2P recoverable wet gas reserves of 6.6 Tcf and 31 MMbc. The lease elapses on 18 August 2019 and, following a variation of conditions that was approved on 18 December 2017, includes approximately AUD 12.5 million of expenditure from the date of award. NT/RL7, which covers an area of 1,764 sq km, was awarded on 19 August 2014.Â  Participants in the permit are now Eni Australia Ltd (65% + Operator), Petronas Carigali (Australia) Pty Ltd (25%) and Osaka Gas Australia Pty Ltd (10%). Â 
Eni has taken 32,5% stake from Shell in retention lease NT/RL7 (Evans Shoal gas field) for an undisclosed sum.