METHOD

摘要

The present invention provides a method for preparing a pipelineable hydrocarbon mixture from a crude heavy hydrocarbon mixture comprising: - visbreaking said crude heavy hydrocarbon mixture at a temperature of 350 to 440 °C and a pressure of 20 to 150 bar for 0.5 to 15 minutes to produce a visbroken hydrocarbon mixture; and - mixing said visbroken hydrocarbon mixture with a diluent to produce said pipelineable hydrocarbon mixture.