Estimation of the SARA Composition of Crude Oils from Bubblepoint Pressure Data

Abstract

A statistical correlation to provide reasonable estimates of crude oiĺs SARA compositions (saturates, aromatics, resins, asphaltenes) from bubblepoint pressure and light-ends compositional data is presented. In developing the correlation, we collected experimental SARA compositions of 341 crude oils of different origin. The most-probable SARA compositions are then obtained by seeking the maximum probability according to its oil type, in line with the measured values of bubblepoint pressures. Results show that the proposed method is simple and provides reasonable values of SARA compositions of an oil in cases in which only the light-ends compositions and a few bubblepoint pressures are available.

Study of Bulk Properties Relation to SARA Composition Data of Various Vacuum Residues Employing Intercriteria Analysis

“…The SARA composition data can be used for evaluating relations between different SARA fractions [29], assessing the quality of petroleum [30], judging oil fouling potential [10], estimating vacuum residue properties [31], and understanding the chemical transformations taking place in vacuum residue upgrading processes [32,33]. Different approaches have been reported to predict the SARA composition of petroleum from other petroleum characteristics [34][35][36][37]. The presence of correlations of bulk properties to SARA composition data can allow prediction of SARA fraction contents, and vice versa prediction of bulk properties from SARA composition data.…”

Técnica De Inspeção Ultrassônica Para O Monitoramento Do Mecanismo De Dano Em Dutos De Transporte De Petróleo

“…A caracterização é complementada por cálculos que estimam as grandezas chamadas fatores de caracterização, distribuição dos átomos de carbono por família de hidrocarboneto e ainda composição química das frações. Esses cálculos também podem ser chamados de correlações matemáticas, e, em geral, utilizam propriedades básicas do óleo bruto (REYES-GONZALEZ et al, 2016).…”

Otimização Do Método De Separação Sara E Uso De Correlações Matemáticas Na Avaliação Composicional De Óleos Crus

“…de hidrocarboneto e ainda composição química das frações. Esses cálculos também podem ser chamados de correlações matemáticas, e, em geral, utilizam propriedades básicas do óleo bruto (REYES-GONZALEZ et al, 2016).…”