When start Saudi aramco?

Saudi Aramco, officially known as the Saudi Arabian Oil Company, was founded in 1933 when the Saudi government granted a concession to the Standard Oil Company of California (Socal) to explore for oil in the country. The first significant oil discovery was made in 1938 at the Dhahran oil field. Over the decades, Aramco evolved into one of the world's leading oil producers and was fully nationalized by the Saudi government in 1980.