NOSTRUM OIL & GAS PLC announces delay in well drilling on Chinarevskoye field

/KASE, September 3, 2018/ – NOSTRUM OIL & GAS PLC (London), whose shares are officially listed on Kazakhstan Stock Exchange (KASE), has provided KASE with the following press release of September 3, 2018: quote Nostrum Oil & Gas PLC (LSE: NOG) (“Nostrum”, or “the Company”), an independent oil and gas company engaging in the production, development and exploration of oil and gas in the pre-Caspian Basin, today announces the postponement of drilling in well 234 in the western area of the Chinarevskoye field. The postponement is due to the collapse of the well bore hole in the zone between the Afoninski and Biski reservoirs. The proposed solution is to drill a side track but as a first step the Company will have a full study carried out to determine why the bore hole collapsed to prevent any recurrence and to understand what the best design will be for the side track. None of the wells previously drilled in this formation in the west encountered similar stability issues in the bore hole. Whilst this study is being carried out we will move the rig immediately to start drilling production well 231 in the Biski North East reservoir. The earliest we will be able to return the rig to 234 to drill a side track will be in Q1 2019 as we will be drilling production wells until then. Disclosure of inside information in accordance with Article 17 of Regulation (EU) 596/2014 (16 April 2014) relating to Nostrum Oil & Gas PLC and Zhaikmunai LLP LEI: 2138007VWEP4MM3J8B29 Further information For further information please visitwww.nog.co.uk unquote [2018-09-03]