Maturity assessment of oils from the Sakhalin oil fields in Russia: phenanthrene content as a tool

Stojanović, Ksenija; Jovančićević, Branimir; Певнева, Г. С.; Golovko, Julia; Головко, А. К.; Pfendt, P.A.

doi:10.1016/s0146-6380(01)00004-3

Cited by 32 publications

(32 citation statements)

References 14 publications

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“…This leads to a conclusion that the same kind of effective maturity parameters are significant in accessing the maturity of severe biodegraded oils when used together. According to the class boundaries for MPI 3 values proposed by Radke (1987) for oils of different maturity together with the corresponding limits of [P] set by Stojanovic′ et al (2001), the thermal maturities of Halahatang oils are moderate (Fig. 6e).…”

Section: Correlation Of Oils Based On the Effective Maturity Parametersmentioning

confidence: 99%

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Maturity Assessment of Severely Biodegraded Marine Oils from the Halahatang Depression in Tarim Basin

Chang

Wang

Cheng

et al. 2012

Energy Exploration & Exploitation

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Seventeen Ordovician oil samples from Halahatang Depression are investigated for their thermal maturation. On the basis of GC analysis of the alkane fraction as well as GC-MS analysis of the demethylated hopanes, it is assumed that the oils are mixtures of severely biodegraded and nonbiodegraded oils. Therefore, their maturation is assessed on the basis of the distribution and abundance of compounds strongly resistant to biodegradation. The P 1 together with the P 2 values of C 7 light hydrocarbons suggest that the late filled nonbiodegraded oils for Halahatang are super mature. Triterpane and sterane isomerization maturation parameters indicate they barely reached the peak oil generation stage, consistent with the results obtained from the equivalent vitrinite reflectance Rc 1 (0.80-0.95%), while the Rc 2 (1.28-1.60%) delineate a high maturity of Halahatang oils. However these conventional triterpane and sterane isomerization maturation parameters gave only general information and a comparatively narrow range of maturity. Correlation between the maturation parameters of Pr/nC 17 and Ph/nC 18 , Ts/(Ts + Tm) and C 29 Ts/(C 29 Ts + C 29 H), MPI 1 and MPI 3 , 4-/1-MDBT and 4, 6-/1,4-DMDBT are rather good, confirming the validity to assess and differentiate the maturity of the severely biodegraded oils examined, with the exception of naphthalene maturation parameters(DNR 1 and TNR 2 ). According to the maturation classification assembled with selected effective maturity parameters, such as the MPI 3 together with the corresponding [P], the thermal maturities of Halahatang oils are moderate, while Ts/(Ts + Tm) together with 4-/1-MDBT demonstrate a moderate-high maturity.

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Section: Correlation Of Oils Based On the Effective Maturity Parametersmentioning

confidence: 99%

“…So the parameters determined on the basis of distribution and abundance of structural isomers of polycyclic aromatic hydrocarbons are particularly important in the assessment of the maturity of oils altered by biodegradation (Stojanovic′ et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Maturity Assessment of Severely Biodegraded Marine Oils from the Halahatang Depression in Tarim Basin

Chang

Wang

Cheng

et al. 2012

Energy Exploration & Exploitation

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“…The aromatic maturity indicators related to methyl phenanthrene isomers and methyl dibenzothiophene isomers such as methyl phenanthrene index (MPI1 and MPI2) and methyl phenanthrene ratio (3-MP+2-MP)(1-MP+9-MP) are used widely [15][16][17][18][19][20] , but as for biodegraded oils, could those indicators be used to determine the maturity of crude oils? The relationship between methyl phenanthrene index methyl phenanthrene ratio and methyl dibenzothiophene ratios (4-MDBTH/1-MDBTH and 2+3-MDBTH/1-MDBTH [19,20] ) and the biodegradation degree in the biodegraded oils will be discussed.…”

Section: Variation Of Aromatic Maturity Indicatorsmentioning

confidence: 99%

“…The distributions and compositions of the aromatic compounds such as alkyl naphthalenes, alkyl phenanthrenes and alkyl dibenzothiophenes can be used to determine the maturity of organic matter in the source rocks and the crude oils [15][16][17][18][19][20] . However, when the crude oils are biodegraded by bacteria, it is unknown whether those aromatic maturity indicators can be used or not.…”

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confidence: 99%

The effects of biodegradation on the compositions of aromatic hydrocarbons and maturity indicators in biodegraded oils from Liaohe Basin

Bao

Zhu

2009

Sci. China Ser. D-Earth Sci.

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Citation: Bao J P, Zhu C S. The effects of biodegradation on the compositions of aromatic hydrocarbons and maturity indicators in biodegraded oils from Liaohe Basin. By the aid of GC-MS technique, a series of sequentially biodegraded oils from Liaohe Basin have been analyzed. The results show that the concentrations and relative compositions of various aromatic compounds in the biodegraded crude oils will change with increasing biodegradation degree. The concentrations of alkyl naphthalenes, alkyl phenanthrenes, alkyl dibenzothiophene are decreased, and the concentration of triaromatic steroids will increase with increasing biodegradation degree in biodegraded oils. Those phenomena indicate that various aromatic compounds are more easily biodegraded by bacteria like other kinds of hydrocarbons such as alkanes, but different series of aromatic compounds have a varied ability to resistant to biodegradation. The ratios of dibenzothiophene to phenenthrene (DBTH/P) and methyl dibenzothiophene to methyl phenanthrene (MDBTH/MP) are related to the features of depositional environment for source rocks such as redox and ancient salinity. However, in biodegraded oils, the two ratios increase quickly with the increase of the biodegradation degree, indicating that they have lost their geochemical significance. In this case, they could not be used to evaluate the features of depositional environment. Methyl phenanthrene index, methyl phenanthrene ratio and methyl dibenzoyhiophene ratio are useful aromatic maturity indicators for the crude oils and the source rocks without vitrinite. But for biodegraded oils, those aromatic maturity indicators will be affected by biodegradation and decrease with the increase of the biodegradation degree. Therefore, those aromatic molecular maturity indicators could not be used for biodegraded oils.biodegraded oils, alkyl phenanthrenes, alkyl dibenzothiophenes, aromatic maturity indicator, Liaohe Basin

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“…However, due to the fact that isoprenoid and polycyclic alkanes degradation can start before n-alkanes are completely decomposed, the use of the latest as geochemical markers is limited. Referring to biodegraded oils the more resistant aromatic compounds have been used to evaluate the oil geochemical history (e.g., Stojanović et al 2001).…”

mentioning

confidence: 99%

Transformation of Petroleum Saturated Hydrocarbons during Soil Bioremediation Experiments

Jovančićević

Antić

Pavlović

et al. 2007

Water Air Soil Pollut

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This paper presents transformations of saturated hydrocarbons of petroleum type pollutants during ex situ bioremediation of soil on the pilot heap (halde), during a period of 6 months, within the grounds of Petroleum Refinery Pančevo (Serbia). Samples for analysis were taken in time intervals of 2 weeks (P 1 -P 12 samples). Organic substance was extracted by Soxhlet's method and quantified. Isoprenoid aliphatics, in particular pristane and phytane, and polycyclic aliphatics of sterane and triterpane types in saturated hydrocarbon fractions were analysed by GC-MS (SIM method). Significant amounts of n-alkanes have not been detected. The MSchromatogram revealed only marginal amounts of pristane and phytane in sample P 1 . Pristane and phytane occurred in sample P 8 , and in even higher quantities in the final sample P 12. The proceeding bioremediation process was accompanied by the decrease of the relative amounts of pentacyclic terpanes of hopane type, compared to tri-and tetracyclic terpanes. In the initial sample P 1 the distribution of steranes and hopanes follows a pattern, which is characteristic for crude oils. However, their identification by SIM method was not possible in samples P 8 and P 12 because of the reduced concentration. The observed changes in the alkane fractions' compositions may be considered as atypical, referring to the fact that during oil biodegradation under natural conditions, decomposition of isoprenoids occurs much easier and faster than decomposition of polycyclic alkanes of tri-, tetra-and pentacyclic terpane, sterane and diasterane types, after the decomposition of n-alkanes has been almost completed.

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Maturity assessment of oils from the Sakhalin oil fields in Russia: phenanthrene content as a tool

Cited by 32 publications

References 14 publications

Maturity Assessment of Severely Biodegraded Marine Oils from the Halahatang Depression in Tarim Basin

Maturity Assessment of Severely Biodegraded Marine Oils from the Halahatang Depression in Tarim Basin

The effects of biodegradation on the compositions of aromatic hydrocarbons and maturity indicators in biodegraded oils from Liaohe Basin

Transformation of Petroleum Saturated Hydrocarbons during Soil Bioremediation Experiments

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