Although this output level was well below the peak levels of more than 3 million bpd achieved in the late 1960s, the National Oil Corporation (NOC) had plans in place before 2011 to roll out enhanced oil recovery (EOR) techniques to increase crude oil production at maturing oil fields. Key to this plan succeeding will be the investment of international oil companies (IOCs), but there is a foundation of IOC interest to build upon. Prior to the removal of Gaddafi in 2011, numerous high-profile IOCs were either operating in Libya or had plans to. Eni currently produces gas in Libya from its Wafa and Bahr Essalam fields operated by Mellitah Oil & Gas, a joint venture between the Italian company and the NOC. It also agreed to make the development of the Waha-concession North Gialo and NC-98 oil fields a priority, according to the NOC.