Premier Oil plc announced interim management statement for the period 1 January to 16 May 2013. For the period the company reported total production operations for January 30, 2013 to April 30, 2013 was 58.0 kboepd compared to 56.1 kboepd in the same period last year. The company, production for first half 2013 is expected to be in the range of 58-60 kboepd compared to 58.4 kboepd in the same period last year. For the full year production guidance is maintained at 65-70 kboepd. Capital expenditure for full year 2013 is expected to be in line with previous guidance of around $1.2 billion. As at 30 April, net debt is estimated at $1.2 billion. Cash and undrawn committed facilities were $1.1 billion together with bilateral uncommitted facilities of a further $220 million.

Premier Oil plc reported results from the testing of the Matang gas discovery on Block A Aceh (Premier equity 41.97%) in Indonesia. The Upper Bampo Limestone formation has been tested over the interval 7,785 feet TVD to 7,853 feet TVD and has flowed gas at a rate of 25 mmscfd through a 52/64 inch choke. Initial sampling indicates that the gas contains approximately 15% carbon dioxide. The gross resource estimate for the Matang structure remains in line with the pre-drill estimate of 100 to 400 bcf.

Premier Oil plc announced the successful well test of the Luno II discovery on PL 359. The production test achieved an average flow rate of 2,044 barrels of oil per day of good quality (36 degrees API) crude oil through a 48/64 inch choke, with a gas to oil ratio of 1,012 standard cubic feet per barrel. Premier estimates gross resources across the Luno II structure to be in the range of 75 to 130 million barrels of oil equivalent (mmboe) of which approximately 80% are liquids. An additional 10 to 40 mmboe has been mapped immediately North of the discovery in a low risk Triassic prospect.