The Zuluf field is located about 40 kilometres off Saudi Arabia's northeast coast, in around 40 metres of water. The field is a huge northeast-southwest anticline, measuring approximately 600 km2, comprising six oil-bearing reservoirs of Cretaceous to Jurassic age. Zuluf's current oil production is marketed as Arab Medium. Associated gas is initially separated offshore and then transported 150 kilometres via pipeline to the Berri gas processing plant. In 2017, Saudi Aramco announced a major expansion to develop Zuluf's heavier crude reservoirs. Aramco expects to see the addition of 600,000 b/d Arab Heavy crude capacity by 2022 or 2023.