The National Oil Corporation (NOC) was established on 12 November 1970 , under Law No: 24/1970, replacing the general Libyan Petroleum Corporation which established under Law No. 13 of 1968 to assume the responsibility of the oil sector operations . It was later reorganized under decision No :10/1979 by the General Secretariat of the General People's Congress, to undertake the realization of the objectives of the development plan in the areas of petroleum , supporting the national economy through increasing , developing and exploiting the oil reserves and operating and investing in those reserves , to realize optimum returns.