Method for characterizing residual crude oil and petroleum fractions
AssigneePhillips Petroleum Company
InventorsPaul F. Meier, Dhananjay B. Ghonasgi, Michael Wardinsky
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Abstract
A method to rapidly characterize the hydrocarbon chemistry of heavy residual petroleum mixtures uses three model equations for predicting aromatic carbon content, aromatic hydrogen content and total hydrogen content of the heavy residual oil. The predictive equations are based on three easily measured bulk properties including refractive index, specific gravity and the Watson K factor.
Claims6
A method for characterization of a hydrocarbon oil having an unknown composition, wherein said characterization is based on three measured bulk properties having limiting values for infinitely long carbon/hydrogen groups in the liquid state, said method comprising the following steps:
- (a) calculating the aromatic carbon content of said heavy hydrocarbon oil using a model comprising a first equation based on measured bulk properties of said hydrogen oil including:
- refractive index and Watson K factor;
- (b) calculating the aromatic hydrogen content of said heavy hydrocarbon oil using a model comprising a second equation based on measured bulk properties of said hydrogen oil including:
- refractive index and Watson K factor;
- (c) calculating the total hydrogen content of said heavy hydrocarbon oil using a model comprising a third equation based on measured properties including:
- specific gravity and the Watson K factor;
- and
- (d) wherein said first, second and third equations include said limiting values for the respective measured property.
Dependencies are inferred from the claim text.