Dyas has increased its P1720 interest to 50% by acquiring the 30% stake previously held by Premier Oil, as advised by the OGA on 2 January 2018. The North Sea East Central Graben licence covers part-block 23/16c (7.44 sq km), located 10km N of Mungo and Lomond fields, and 25km SE of Everest. It contains part of Arran gas and condensate field which incorporates the Phyllis and Barbara discoveries respectively made by 23/16b-1 (1985, Shell, 4,215m) and 23/16c-8 (2002, Amerada Hess, 2,884m), and estimated to hold 230 Bcfg contingent recoverable resources (P50). Arran field extends over adjacent licences P1051 (23/11a) to the N and P359 (23/16b) to the E. Since 2013, the Arran group has been reviewing field development options, with a most recent plan of a three well subsea tie-back to Shearwater platform. P1720 was awarded in the 25th Offshore Round on 1 September 2009. Revised P1720 participants are KNOC via Dana Petroleum (E&P) Ltd (50% + Op) and Dyas UK Ltd (50%). Shell and Zennor are also partners in the proposed Arran development, via adjacent licence interests.<P /> 
Premier Oil exited licence P1720 with Dyas (->50%, Dana Petr. 50% + op) taking the companyâs 30% interest. 