Ifp Energies Nouvelles

Statoil Petroleum As

Trygve Meyer

Violaine Lamoureux-Var

Daniel Pillot

Anne Hoff

The present invention relates to a method of estimating, for a petroleum feedstock, values representative of the sulfur and carbon distributions in atmospheric and vacuum distillation residues, and a value representative of the sulfur content in coke. According to the method, the following stages are carried out:

Method for fast estimation of distillation residues and coke characteristics

The present invention provides a process for simultaneously extracting and upgrading a heavy hydrocarbon mixture, said process comprising: i) injecting supercritical or near-supercritical COat a temperature of around the critical temperature and a pressure of from around the critical pressure into a heavy hydrocarbon deposit; and ii) removing a stream of COfrom the deposit, which stream is charged with a hydrocarbon mixture having a lower average molecular weight than that of the heavy hydrocarbon deposit, wherein the removed COis optionally recovered and either recycled for subsequent re-injection or injected for long-term sub-surface storage.

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Stavanger, Norway

Trygve Meyer