Update on Well 234 Drilling

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London, 3 September 2018

Update on Well 234 Drilling

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 visit www.nog.co.uk 

Further enquiries

Nostrum Oil & Gas PLC - Investor Relations

Kirsty Hamilton-Smith

Amy Barlow

+44 203 740 7433

ir@nog.co.uk

Instinctif Partners - UK

David Simonson

George Yeomans

+ 44 (0) 207 457 2020

Promo Group Communications - Kazakhstan

Asel Karaulova

Irina Noskova

+ 7 (727) 264 67 37

Notifying person

Thomas Hartnett

Company Secretary

About Nostrum Oil & Gas

Nostrum Oil & Gas PLC is an independent oil and gas company currently engaging in the production, development and exploration of oil and gas in the pre-Caspian Basin. Its shares are listed on the London Stock Exchange (ticker symbol: NOG). The principal producing asset of Nostrum Oil & Gas PLC is the Chinarevskoye field, in which it holds a 100% interest and is the operator through its wholly-owned subsidiary Zhaikmunai LLP. In addition, Nostrum Oil & Gas holds a 100% interest in and is the operator of the Rostoshinskoye, Darinskoye and Yuzhno-Gremyachenskoye oil and gas fields through the same subsidiary. Located in the pre-Caspian basin to the north-west of Uralsk, these exploration and development fields are situated approximately 60 and 120 kilometres respectively from the Chinarevskoye field.

Forward-Looking Statements

Some of the statements in this document are forward-looking. Forward-looking statements include statements regarding the intent, belief and current expectations of the Partnership or its officers with respect to various matters. When used in this document, the words "expects," "believes," "anticipates," "plans," "may," "will," "should" and similar expressions, and the negatives thereof, are intended to identify forward-looking statements. Such statements are not promises or guarantees, and are subject to risks and uncertainties that could cause actual outcomes to differ materially from those suggested by any such statements.

No part of this announcement constitutes, or shall be taken to constitute, an invitation or inducement to invest in the Company or any other entity, and shareholders of the Company are cautioned not to place undue reliance on the forward-looking statements. Save as required by the Listing Rules and applicable law, the Company does not undertake to update or change any forward-looking statements to reflect events occurring after the date of this announcement.