Correlation of Physicochemical Properties of Bach Ho Oils with Proton NMR Relaxation Parameters and Their Temperature Dependence

The physicochemical properties of crude oils (density, viscosity, asphaltene concentrations) from the Bach Ho oilfield (Vietnam) have been correlated with 1 H NMR relaxation parameters (spin–lattice and spin–spin relaxation times T 1 i and T 2 i , respectively), and their temperature dependence has...

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Published inPetroleum chemistry Vol. 59; no. Suppl 1; pp. S21 - S29
Main Authors Kashaev, R. S., Kien, N. T., Tung, Ch. V., Kozelkov, O. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2019
Springer
Springer Nature B.V
Subjects
Alkanes
Analysis
Asphaltenes
Chemistry
Chemistry and Materials Science
Correlation
Industrial Chemistry/Chemical Engineering
NMR
Nuclear magnetic resonance
Oil field equipment
Oil fields
Parameters
Petroleum
Temperature dependence
Transportation
viscosity
paraffin wax
const
correlation
structural units
η
temperature
relaxation times
asphaltenes
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Summary:The physicochemical properties of crude oils (density, viscosity, asphaltene concentrations) from the Bach Ho oilfield (Vietnam) have been correlated with 1 H NMR relaxation parameters (spin–lattice and spin–spin relaxation times T 1 i and T 2 i , respectively), and their temperature dependence has been studied. The results are discussed in terms of the concept of the formation of structural units (SU) in oils. The standard “alkane line”—the conventional correlation η Т 1,2 = const/ Т for viscous oils—has been refined. The temperature dependences of T 1,2 i have been obtained, which manifest ordering processes in the test oils.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544119130073