The Marjan Complex, located off Saudi Arabia's east coast, contains four offshore fields - Marjan, Lawhah, Maharah and Hamur. Marjan, the largest of the four, is a super-giant field that straddles the offshore median line with Iran. The majority of oil reserves lie within the Saudi Arabian part of the field although the Iranian portion, known as Foroozan, also contains significant volumes. The field underwent additional development in the 1980s and 1990s. In 2017, Saudi Aramco announced a major expansion of the Marjan field, known as the Marjan Crude Increment Program, which will result in a capacity increase of 300,000 b/d by 2023-2024.