On top of this is 29,400 tonnes of processing facilities which was mainly built and installed at DSME in South Korea.
One major aspect of the well programme is the large-scale use of horizontal Christmas trees designed to allow wells to be drilled through them These are being drilled with two rigs, Pride Africa and Pride Angola, in tandem for the initial 18 months of the campaign of which will require some 2,500 days in all.
These reservoirs were formed more than 25 million years ago by the accumulation of sediment at the mouth of the Congo River.
Today, they lie not very far (about 800 metres (2,600 ft)) below the seabed, forming reservoirs that contain a viscous (between 21° and 23° API) oil at relatively low temperatures of between 45 °C and 50 °C.
The start-up of Dalia coincided with Angola's entry into the Organization of Petroleum Exporting Countries (OPEC).