METHOD AND SYSTEM FOR REMOVING DEPOSITS WITHIN A PIPE OR PIPELINE

摘要

A fluid flow processing plant and a method for pig-free removal of wax and hydrate deposits in hydrocarbon production flowlines. The fluid flow processing plant (1) comprises at least one cooling flowline (2), cooling means (3-7) arranged to cool the fluid in the at least one cooling flowline (2) over a cooling section (8) until the fluid reaches a temperature at or near the cooling flowline's surrounding temperature (T_sea) and at least one vehicle (9) arranged on or near the outer circumference (2a) of at least one of the at least one cooling flowline (2). Furthermore, each vehicle (9) comprises at least one sleeve (10) configured to at least partly surround an outer circumference (2a) of the cooling flowline (2), deposit removing means (11) being configured to remove deposits (12) situated on the inner wall (2b) of the cooling flowline (2) and a propulsion unit (13-15) configured to drive the vehicle (9) bi-directionally on the cooling flowline (2).