National Oil Corporations (NOCs) are state-owned companies responsible for the exploration, production, and management of a country's oil and gas resources. They play a crucial role in the energy sector, often controlling significant portions of a nation's energy supply and contributing to economic development. NOCs can vary in size and scope, depending on the country's resources and policies. These corporations often collaborate with international oil companies (IOCs) to enhance technology and investment in oil extraction and production. Examples of well-known NOCs include Saudi Aramco in Saudi Arabia and Petrobras in Brazil. Their operations are vital for energy security and national revenue.