Deepwater intake risers adapted for topsides needs on floating systems

摘要

FPSOs and floating liquefied natural gas (FLNG) units incorporate various and complex systems for oil and gas processing and liquefaction operations. Water intake risers (WIRs) are designed to supply the necessary volume and flow of cold water to cool down the topsides process. Traditionally, WIRs have been made from steel, which introduced numerous constraints such as weight, diameter limitations and stiffness of the line. In addition, the technology would limit the pumping depth to 150 m (492 ft), where the water temperature does not go below 15°C (59°F).