Overboard discharge: Reduction of oil in water content
The Slop Water Treatment skid for the Kraken FPSO is designed to process deck water from the FPSO decks. This deck water contains a small amount of contaminants like oil from spills. The contaminated water is collected in the slop tank and transferred to the Slop Water Treatment skid consisting of a Hydrocyclone and Filter Coalescer Vessel. This 2-stage system will reduce the oil in water content down to 15 ppmv to meet the regulations for overboard water discharge.
Kraken FPSO and oil field
The Bumi Armada FPSO for the Kraken oil field will process and store crude oil before offloading it to a shuttle tanker. It has a storage capacity of 600,000 barrels of crude oil. The vessel is a converted tanker upgraded to achieve a design life of 25 years.
The Kraken Oil Field was discovered in 1985 and is one of the biggest subsea heavy-oil field projects that is under development in the UK sector of the North Sea, about 350 km north east of Aberdeen. The field has more than 137 million barrels of heavy oil as reserves and it has a production volume of 50,000 barrels of oil per day. The operator of the field is EnQuest and they are expecting the first oil in 2017.