Process for converting a highly viscous hydrocarbon charge to a less viscous, more easily transportable and more easily refinable hydrocarbon fraction

摘要

Process for reducing the viscosity of a highly viscous hydrocarbon charge containing 10-30% b.w. of constituents distilling above 375° C., said treatment comprising hydrovisbreaking said charge to such an extent as to convert 10 to 30% of the 375° C..sup.+ fraction to a 375° C..sup.- fraction, fractionating the hydrovisbreaked product to separate a fraction comprising at least 90% of the constituents boiling below 375° C. from a distillation residue, deasphalting said distillation residue and admixing at least a portion of the deasphalted distillation residue with at least a portion of said fraction comprising at least 90% of the constituents boiling below 375° C.