SUB-COOLED HYDROCARBON PRODUCTION METHOD AND SYSTEM INCLUDING MACERATION OF PRECIPITATES

摘要

A method for conversion of a subsea hydrocarbon production fluid from above a solids formation temperature to below the said temperature for further transport through a flowline (1) in the form of slurry. A partial volume of the production fluid is recycled through a cooling loop (9) connecting a downstream discharge (10) from the flowline with an upstream inlet (11) to the flowline, and macerating the solids, which are formed in the production fluid upon mixing with the recycled flow, by means of a motor driven impeller (6) introduced in the fluid flow between the flowline inlet and the flowline discharge. The invention also refers to a system comprising at least one production fluid recycling loop (9) connecting a downstream discharge (10) from the flowline with an upstream inlet (11) to the flowline, the recycling loop having a lumen defined by a lumen wall through which heat is transferred from the production fluid to an ambient cooling medium and a motor driven impeller (6) incorporated in the flowline between the flowline inlet and the flowline discharge.