NC186 is located in the Murzuk Basin, immediately to the northeast of Repsol's NC115 acreage. Repsol and its partners have made 12 discoveries on the block since 2000, seven of which have been deemed commercial. Development consent was granted for the NC186-A field in August 2002 and first oil was produced in October 2003. NC186-D was granted development consent in August 2003 and came onstream in June 2004. The partners received development approval for both the NC186-B and NC186-D fields in March 2006. Both NC115 and NC186 contracts were renegotiated and transferred to the EPSA IV model in July 2008. The NC186 exploration licence was extended for five years to 2013 and the development licence extended to 2032. A combined (NC115 and NC186) bonus of US$1 billion was paid to secure the licence extension and up to US$4 billion of capital expenditure was committed. Since 2011, civil unrest has disrupted IOCs' efforts to maintain production.