Exploration drilling update

PREMIER OIL PLC

("Premier")

Exploration drilling update - Oil discovery at Kuda Laut, Indonesia

28 April 2014

Indonesia - Oil discovery at Kuda Laut, Tuna Block

Premier is pleased to announce that the Kuda Laut-1 well in Tuna PSC (Premier operator, 65 per cent) offshore Indonesia has discovered 183 feet of net oil-bearing reservoir and 327 feet of net gas-bearing reservoir. Oil and gas samples have been recovered to surface.

Following completion of evaluation operations, the well will be side-tracked to drill the Singa Laut prospect in the adjacent fault block. The results of this side-track are expected in late May and will be incorporated with the results from Kuda Laut to assess the extent of discovered resources at that time.

Separately, drilling continues at the Ratu Gajah-1 exploration well in the Natuna Sea Block A PSC (Premier operator, 28.67 per cent) with results expected in May.

Pakistan and Mauritania - Gas discovery at K-36 Pakistan

The K-36 well on the Kadanwari block (Premier 15.79 per cent interest) onshore Pakistan encountered a total net gas pay of 65 feet and flowed at 50 mmscfd through a 64/64 inch choke on test. The well was tied-in to the Kadanwari facilities and has been on production since 16 April. Operations of the K-34 well on the Kadanwari block are ongoing with results expected in May.

The Badhra-8 well on the Badhra block (Premier 6 per cent interest) onshore Pakistan was plugged and abandoned as a dry hole. Operations at the Badhra South-1 Deep well continue with results expected in May.

As previously announced by the operator of the C-10 licence (Premier 6.23 per cent interest), offshore Mauritania, the Tapendar-1 exploration well has been plugged and abandoned as a dry hole.

Andrew Lodge, Exploration Director, commented:

"We are very pleased to announce discoveries in both Indonesia and Pakistan, continuing the exploration success we enjoyed throughout 2013. Discovering oil at Kuda Laut is of particular significance and we now look forward to the results of Singa Laut. This is the first of a number of high impact wells Premier plans to drill over the next 12 months."