Ourhoud is a producing conventional oil field located onshore Algeria and is operated by Organisation Ourhoud ( Sonatrach , Cepsa , Eni , Occidental Petroleum , PT Pertamina , Repsol ) . The field is located in block Block 404, Ourhoud (Block 405a), and Rhourde El Khrouf (Block 406a). The Ourhoud Field—the second largest in Algeria—surpassed a cumulative production milestone of 1 billion barrels of oil in 2017
