An experimental investigation of geochromatography during secondary migration of petroleum performed under subsurface conditions with a real rock

Larter, Stephen R.; Bowler, Bernard; Clarke, Ed; Wilson, Colin; Moffatt, Brian; Bennett, Barry; Yardley, G S; Carruthers, Dan

doi:10.1039/b006737g

Cited by 17 publications

(17 citation statements)

References 15 publications

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“…Such approaches have been confirmed by laboratory and field studies (Celgg et al, 1998a-b;Harrison et al, 1997;Li et al, 1997;Wilhelms et al, 1997;Zhu et al, 1997;Horsfield et al, 1998;Li et al, 1999;Larter et al, 2000;Terken and Frewin, 2000).…”

Section: Introductionmentioning

confidence: 49%

Occurrence and Geochemical Significance of Carbazoles and Xanthones in Crude Oil from the Western Desert, Egypt

Bakr¹

2009

ear

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Abstract. This paper describes an approach that involves the evaluation of the occurrence and distributions of nitrogen-and oxygen-containing aromatic compounds in Egyptian crude oils and source rocks. Carbazoles and xanthones represent nitrogen-and oxygen-containing aromatic compounds, respectively.Alkylcarbazoles and benzocarbazoles were quantitatively studied in crude oils taken from the Abu Gharadig and Shushan basins in north Western Desert of Egypt in order to investigate their occurrence, concentrations and distributions. The abundances of carbazole, methylcarbazoles and dimethylcarbazoles in the marine Abu Gharadig oils are much higher than that of the terrestrial Shushan oils. The results presented here indicate that thermal maturation can be ruled out as a major factor in controlling the changes in the carbazole ratios in the crude oils. Most likely, source characteristics of the studied samples play a significant role in controlling the distribution of carbazole compounds in reservoired oils. The alkylcarbazoles 1MC/1MC+1EC, 3MC/4MC and 18DMC/18DMC+1EC when correlated with specific biomarker signatures provide background information discriminating between two main types of depositional setting: 1) Terrestrial dominated source deposited in oxidizing conditions for the Shushan oils and, 2) marine shale dominated sourced oils deposited in suboxic environments for the Abu Gharadig samples. Similarly, benzocarbazole distributions were found to be independent of maturity, but influenced by organic facies and depositional environments. Therefore, in this study, alkylcarbazole and benzocarbazoles compounds are well suited for the differentiation of Abu Gharadig and Shushan crude oils with respect to origin and variations of facies and depositional environment. M.M.Y. Bakr 128Using various kinds of Egyptian crude oils derived from marine carbonates, marine clastics and terrestrial sources, the current study indicates that xanthones and its alkylated homologues are abundant only in source extracts and crude oils that have terrestrial organic matter input. This is the second description of xanthones in crude oils, and the first in Egyptian petroleum systems. Overall, based on the data of this study, xanthones signatures show great promise as terrestrial source markers in a given petroleum system.

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Section: Introductionmentioning

confidence: 49%

Occurrence and Geochemical Significance of Carbazoles and Xanthones in Crude Oil from the Western Desert, Egypt

Bakr¹

2009

ear

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“…Both sides were connected by a pump that helped maintain a constant pressure within the container as a whole; a registered pressure ranging from 3.0-3.8 Mpa prevented the liquid within from vaporizing at the required experimental temperature of 120°C. The flow experiment involved placing the core samples in a core-flood experiment, in which the set-up and methods are similar to those used by Larter et al (2000). The core samples were clamped in a core holder; one end of the holder was connected with the stainless cylindrical vessel that contains the reaction solution, while the other end was linked to a backpressure regulator and an exit for the liquid.…”

Section: Experimental Methodsmentioning

confidence: 99%

Possible effects of carbonate content in source rocks on fluid composition and chemical reaction — A preliminary result of simulation

Zeng

Bai

Peng

2006

Journal of Geochemical Exploration

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“…The main point is that similar reactions and products were likely to proceed in the parent body of the Murchison meteorite during heating of the interior. The hot water would then transport the products to the surface of the parent body where they would accumulate, perhaps with some selective enrichments resulting from geochromatography (Wing and Bada, 1991;Larter et al 2000).…”

Section: Reaction Mechanismmentioning

confidence: 99%

Catalytic effects of Murchison Material: Prebiotic Synthesis and Degradation of RNA Precursors

Saladino

Crestini

Cossetti

et al. 2011

Orig Life Evol Biosph

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Mineral components of the Murchison meteorite were investigated in terms of potential catalytic effects on synthetic and hydrolytic reactions related to ribonucleic acid. We found that the mineral surfaces catalyzed condensation reactions of formamide to form carboxylic acids, amino acids, nucleobases and sugar precursors. These results suggest that formamide condensation reactions in the parent bodies of carbonaceous meteorites could give rise to multiple organic compounds thought to be required for the emergence of life. Previous studies have demonstrated similar catalytic effects for mineral assemblies likely to have been present in the early Earth environment. The minerals had little or no effect in promoting hydrolysis of RNA (24mer of polyadenylic acid) at 80°C over a pH range from 4.2 to 9.3. RNA was most stable in the neutral pH range, with a half-life ~5 h, but at higher and lower pH ranges the half-life decreased to ~1 h. These results suggest that if RNA was somehow incorporated into a primitive form of RNA-based thermophilic life, either it must be protected from random hydrolytic events, or the rate of synthesis must exceed the rate of hydrolysis.

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An experimental investigation of geochromatography during secondary migration of petroleum performed under subsurface conditions with a real rock

Cited by 17 publications

References 15 publications

Occurrence and Geochemical Significance of Carbazoles and Xanthones in Crude Oil from the Western Desert, Egypt

Occurrence and Geochemical Significance of Carbazoles and Xanthones in Crude Oil from the Western Desert, Egypt

Possible effects of carbonate content in source rocks on fluid composition and chemical reaction — A preliminary result of simulation

Catalytic effects of Murchison Material: Prebiotic Synthesis and Degradation of RNA Precursors

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