Maydan Mahzam became operational in 1965, and its production is currently around 60,000 bbl/d, down significantly from its peak. However, Qatar Petroleum is currently undertaking a renovation intended to extend the life of the field. The field was producing around 70,000 bbl/d in late 2004.
Bul Hanine came on line in 1973, producing Well over 100,000 bbl/d, but production began falling off in the early 1990s. Current production is around 100,000 bbl/d. Development plans to boost production include drilling 86 new wells. Bul Hanine holds approximately 700 million barrels of recoverable reserves.