Group composition of carboxylic acids from West Siberian crude oils

Journal Article · Mon Nov 01 04:00:00 EST 1982 · Chem. Technol. Fuels Oils (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00725035· OSTI ID:5800919

Zhic'tsov, N I; Ershov, V A; Samokhvalova, G I

Performs mass spectrometric analyses of carboxylic acids from crudes of different geologic ages using an MAT 111 chromatograph/mass spectrometer equipped with systems for direct sample introduction and temperature programming. Explains that as an analytical characteristic for determination of the group composition and molecular weight distribution of the carboxylic, the relative intensities of peaks of the ions (M-15)/sup +/ were selected in the mass spectra of their trimethylsilyl esters (TMSES), obtained at different temperatures of the sample in the ion source. Concludes that the results from an analysis of the group composition of the carboxylic acids in crude oils from 10 deposits of various geological ages indicate that as the metamorphism factor increases, there is a decrease in the content of naphthenic acids in the acid concentrates from the crudes. Offers the possibility that for higher reservoir temperatures and greater depths of occurrence of the oil-enclosing rock, the reducing factor dominates over the oxidizing factor in making up the composition of the petroleum acids.

• OSTI ID: 5800919
• Journal Information: Chem. Technol. Fuels Oils (Engl. Transl.); (United States), Journal Name: Chem. Technol. Fuels Oils (Engl. Transl.); (United States) Vol. 18:3-4; ISSN CTFOA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
ASIA
CARBOXYLIC ACIDS
CHARGED PARTICLES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DEPTH
DIMENSIONS
EASTERN EUROPE
ENERGY SOURCES
EUROPE
FOSSIL FUELS
FUELS
GEOLOGIC AGES
GEOLOGIC DEPOSITS
IONS
MASS SPECTROSCOPY
METAMORPHISM
MINERAL RESOURCES
MOLECULAR WEIGHT
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDATION
PETROLEUM
PETROLEUM DEPOSITS
RESOURCES
SAMPLING
SIBERIA
SPECTROSCOPY
TEMPERATURE DEPENDENCE
USSR