Determintion of Crude Oil Physicochecmical properties by High-temperature Gas Chromatography Associated with Chemometrics
Name: ÉRICA VIEIRA ALBUQUERQUE RODRIGUES
Type: MSc dissertation
Publication date: 02/03/2018
Advisor:
Name |
Role |
|---|---|
| PAULO ROBERTO FILGUEIRAS | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| EMANUELE CATARINA DA SILVA OLIVEIRA | External Examiner * |
| PAULO ROBERTO FILGUEIRAS | Advisor * |
| RICARDO MACHADO KUSTER | Internal Examiner * |
Summary: Determining the physicochemical properties of petroleum is important for rapid decision-making during the production process. True boiling point (TBP) curve is the most important parameter in the petroleum characterization and can be estimated by high temperature gas chromatography (HTGC). In this paper, the HTGC technique associated with PLS regression was used to estimate API gravity, kinematic viscosity, pour point, carbon residue, saturated and aromatic content of 98 samples with API gravity ranging from 11.4 to 54.0. PLS model for API gravity, carbon residue, saturates and aromatics contents show root mean square error of prediction (RMSEP) set of 1.7, 0.83 wt%, 6.76 wt% and 4.05 wt% respectively. These methods were applied in nine samples from a field of production of the Brazilian coast and presented an exact equivalent to the models developed. The models for logarithm of kinematic viscosity at 50°C and pour point show RMSEP of 0.31 and 12°C respectively. Furthermore, tests applied in all models for evaluating the presence of systematic and trend errors indicate that there are no significant evidences of their presence in the residues, at significance level of 5%.
