The Safaniya Oil Field , located about 260 km north of Dhahran City , in the Eastern Province , is the largest offshore oil field in terms of the reserves of traditional resources for the Kingdom of Saudi Arabia and the World. It contains a confirmed reserve of 34.03 billion bbl of oil equivalent. Most of the field is located within the waters of the Arabian Gulf. It stretches for about fifty km in length and fifteen km in width within the concession area. Saudi Aramco discovered the Safaniya O...

Ayn Dar Oil Field is situated west of Abqaiq City in the Eastern Province of the Kingdom of Saudi Arabia. It was discovered by the Saudi Arabian Oil Company ' Saudi Aramco ,' which began using a drilling rig for Ayn Dar Well No. (One) on April 10, 1948. On July 22, 1948, the company confirmed the presence of large quantities of oil at a depth of two km in the Arab Zone 'D' of the field. Subsequently, a second well was drilled five km south of the first well. ...