Dammam Well No. 7, also known as the Prosperity Well, is an oil well in Dammam, Eastern Region, Saudi Arabia. Drilling began in 1935, and by March 1938, it started producing commercially, profoundly impacting Saudi Arabia's oil industry. By late March 1938, it was yielding over 3,810 barrels/day and continued operations until 1982, extracting over 32 million barrels in total. Today, Dammam Well No. 7 stands as a symbol of Saudi industrial history and ARAMCO's achievements.