Ororo Field - Rig Selection Confirmed

24 May 2017

Sirius Petroleum plc

(the "Company" or "Sirius ")

COSL Rig Selection Confirmation

Sirius Petroleum (AIM: SRSP), the investing company focused on oil and gas exploration and development opportunities in Nigeria, is pleased to announce that following the analysis of the bathymetry results from the Seabed Survey, COSL Drilling Pan-Pacific Limited ("COSL") has confirmed and identified the "COSL Power" as the Jack-up rig which will be utilised for Ororo field upcoming drilling campaign.

COSL Power is a modern high-specification jack-up rig which is an ABS A1 Self Elevating Drilling Unit capable of drilling in water depths of 375ft.

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 ("MAR"). Upon the publication of this announcement via Regulatory Information Service ("RIS"), this inside information is now considered to be in the public domain.

Enquiries:

Sirius Petroleum +44 20 3740 7640

Bobo Kuti / Jack Pryde

Cantor Fitzgerald Europe +44 20 7894 7000

Sarah Wharry / Craig Francis

Gable Communications +44 20 7193 7463

John Bick [email protected]