The Ourhoud oil field (formerly called Qoubba) which is located south of Anadarko's field in Hassi Berkine, was discovered in July 1994.
It is the second largest oil deposit in Algeria and overlaps Blocks 404, 405 and 406.
The field should be unitised in 2005, but in February 1997 a participation per percentage was agreed on so that three foreign operators will develop the field in partnership with Sonatrach