Cyclohexylbenzenes in crude oils

Baker, R.W.; Kagi, Robert I.; Warton, Ben

doi:10.1016/0009-2541(94)90007-8

Cited by 10 publications

(6 citation statements)

References 18 publications

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“…These compounds can form in relatively high temperatures, and their occurrence in sedimentary organic matter is rare. In our opinion the presence of cyclohexyl-derivatives in solid bitumens (Alexander et al, 1994) may suggest that trapped oil accumulations remained under the influence of relatively high temperatures in oxidizing conditions (e.g. Kidena et al, 2000;McCollom et al, 1999).…”

Section: Solid Bitumen Correlations and Genetic Implicationsmentioning

confidence: 97%

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Fluid circulation and formation of minerals and bitumens in the sedimentary rocks of the Outer Carpathians – Based on studies on the quartz–calcite–organic matter association

Jarmołowicz-Szulc¹,

Karwowski²,

Marynowski³

2012

Marine and Petroleum Geology

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Section: Solid Bitumen Correlations and Genetic Implicationsmentioning

confidence: 97%

“…In some bitumen samples, cyclohexylbenzene and its methyland dimethyl-derivatives have been noticed. Their distribution is shown in Figure 10 (identified based on Alexander et al, 1994), along with other cyclohexyl-derivatives e.g. cyclohexylfluorene (identified based on mass spectra).…”

Section: Solid Bitumen Correlations and Genetic Implicationsmentioning

confidence: 99%

Fluid circulation and formation of minerals and bitumens in the sedimentary rocks of the Outer Carpathians – Based on studies on the quartz–calcite–organic matter association

Jarmołowicz-Szulc¹,

Karwowski²,

Marynowski³

2012

Marine and Petroleum Geology

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“…All the oils and condensates contained abundant aromatic hydrocarbons such as benzene, toluene, xylenes, naphthalenes, cadalene, biphenyls and phenanthrenes. Biphenyls are bicyclic aromatic hydrocarbons, probably generated from a phenol coupling reaction (Alexander et al, 1994a;Trolio et al, 1996). Alkylbiphenyl distribution in the studied samples were very similar, with 3-methylbiphenyl being highly abundant compared to 4methylbiphenyl ( Fig.…”

Section: Source Rock Organic Mattermentioning

confidence: 86%

In‐reservoir Fractionation and the Accumulation of Oil and Condensates in the Surma Basin, Ne Bangladesh

Hossain

Suzuki

Matsumoto

et al. 2014

Journal of Petroleum Geology

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Petroleum in the Surma basin, NE Bangladesh (part of the Bengal Basin) ranges from waxy crude oils to condensates. The origin and source rocks of these hydrocarbons were investigated based on the distributions of saturated and aromatic hydrocarbons in 20 oil samples from seven oil-and gas fields. The relative compositions of pristane, phytane and adjacent n-alkanes suggest that the source rock was deposited in a nonmarine setting. The abundance and similar distribution of biphenyls, cadalene and bicadinanes in most of the crude oils and condensates indicates a significant supply of higher-plant derived organic matter to the source rocks. Maturity levels of the crude oils and condensates from the Surma basin correspond to calculated vitrinite reflectance (Rc) values of 1.0-1.3%, indicating hydrocarbon expulsion from the source rock at a comparatively high maturity level. The Rc values of oils from the Titas field in the southern margin of the Surma basin are relatively low (0.8-1.0%).Some oils were severely biodegraded. The similar distribution of diamondoid hydrocarbons in both biodegraded and non-biodegraded oils indicated similar types of source rocks and similar maturity levels to those of oils from the Surma basin. The Oligocene Jenam Shale and/or underlying non-marine deposits located at greater depths may be potential source rocks. The diversity of the petroleum in the Surma 2 basin was likely due to evaporative fractionation, resulting in residual waxy oils and lighter condensates which subsequently underwent tertiary migration and reaccumulation. Evaporative fractionation due to modification of the reservoir structure occurred during and after the Pliocene, when large-scale tectonic deformation occurred in and around the Bengal Basin.

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“…The origin of these compounds in petroleum is not very clear since they occur in crude oils from various types of source material and geological ages. The genesis of these bicyclic ring systems might occur through phenol coupling of precursor compound at oxidizing condition (Alexander et al 1994a).…”

Section: Cyclohexylbenzenesmentioning

confidence: 99%

Molecular fossils in Cretaceous condensate from western India

Bhattacharya

Dutta

2014

J Earth Syst Sci

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The present study reports the biomarker distribution of condensate belonging to the early Cretaceous time frame using gas chromatography-mass spectrometry (GC-MS). The early Cretaceous palaeoenvironment was inscribed into these molecular fossils which reflected the source and conditions of deposition of the condensate. The saturate fraction of the condensate is characterized by normal alkanes ranging from n-C 9 to n-C 29 (CPI-1.13), cycloalkanes and C 14 and C 15 sesquiterpanes. The aromatic fraction comprises of naphthalene, phenanthrene, their methylated derivatives and cyclohexylbenzenes. Isohexylalkylnaphthalenes, a product of rearrangement process of terpenoids, is detected in the condensate. Several aromatic sesquiterpenoids and diterpenoids have been recorded. Dihydro-ar-curcumene, cadalene and ionene form the assemblage of sesquiterpenoids which are indicative of higher plant input. Aromatic diterpenoid fraction comprises of simonellite and retene. These compounds are also indicative of higher plants, particularly conifer source which had been a predominant flora during the Cretaceous time.

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Cyclohexylbenzenes in crude oils

Cited by 10 publications

References 18 publications

Fluid circulation and formation of minerals and bitumens in the sedimentary rocks of the Outer Carpathians – Based on studies on the quartz–calcite–organic matter association

Fluid circulation and formation of minerals and bitumens in the sedimentary rocks of the Outer Carpathians – Based on studies on the quartz–calcite–organic matter association

In‐reservoir Fractionation and the Accumulation of Oil and Condensates in the Surma Basin, Ne Bangladesh

Molecular fossils in Cretaceous condensate from western India

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