The origin of light hydrocarbons in petroleum: A kinetic test of the steady-state catalytic hypothesis

Mango, Frank D.

doi:10.1016/0016-7037(90)90156-f

Cited by 139 publications

(51 citation statements)

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“…Thus, these data are consistent either with a) separate pipes from the source to individual reservoirs or parts of reservoirs; or b) rapid migration through rock intervals that allow extensive non-equilibrium interaction of gasoline range hydrocarbons with the walls of the carrier and reservoir beds, possibly through a system of fractures having a high surface area. Nonequilibrium adsorption-desorption between a gas and liquid or solid phases can cause significant isotopic shifts, particularly if migration is rapid enough so that non-steady state conditions prevail as the petroleum travels through the migration conduit or the reservoir Our data confirm that specific ratios of branched alkanes are invariant in oils having a common source or a common family of sources as shown in Figs 9 and discussed previously for other fields in Mango, 1990;Ten Haven et al, 1996. However, notice that our gulf coast transect oils consistently fall slightly off of the trend line defined by Mango (lighter line in Fig 9).…”

Section: Interpretation Of Resultssupporting

confidence: 76%

Organic Geochemistry of Continental Margin and Deep Ocean Sediments

Whelan¹

2006

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Section: Interpretation Of Resultssupporting

confidence: 76%

Organic Geochemistry of Continental Margin and Deep Ocean Sediments

Whelan¹

2006

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“…Further post-depositional catalytic reactions, e.g. acid or transition metal catalysis have been shown to occur primarily in shales and would not affect acidic mineral-free carbonates (Mango, 1990(Mango, , 1992Mango et al, 1994).…”

Section: Origin and Significancementioning

confidence: 99%

Occurrence and significance of phytanyl arenes across the Permian-Triassic boundary interval

Grotheer

Métayer

Piggott

et al. 2017

Organic Geochemistry

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a b s t r a c tPhytanyl benzene and phytanyl toluene occur in mudstones from several key Permian-Triassic Boundary (PTB) sections from mid-northern palaeolatitudes (Spitsbergen and Eastern Greenland), as well as mid-southern palaeolatitudes (Western Australia). The occurrence of these compounds through the different PTB sections is related to the occurrence of the previously identified C 33 n-alkyl cyclohexane, suggesting their parent organism shared a similar unique ecological niche and was associated with the extinction horizon. Further, the lack of these compounds in the carbonate-dominated palaeoequatorial, Global Stratotype Section and Point (GSSP), Meishan-1 (South China) section possibly points to their source being temperature and climate controlled.

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“…In such cases, light hydrocarbons and carbon isotopes were found to be useful in correlating source rocks to condensates and black oils (Mango, 1987;1990a;1990b;Fu et al, 1990;Dai et al, 1992;Xu et al, 1996;Odden et al, 1998;Huang et al, 2011).…”

Section: Discussion 51 the Origins Of The Condensatesmentioning

confidence: 99%

Geochemical Characteristics of the Condensates and Their Evaporative Fractionation in Kuqa Depression of Tarim Basin, NW China

Gong

Yang

et al. 2014

Energy Exploration & Exploitation

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After analyzing 21 samples in 12 oil and gas fields in Kuqa depression, two genetic types of condensates are identified. One type is the sapropelic condensate mainly derived from the Upper-Middle Triassic lacustrine source rocks which has a relatively higher content of C 5-7 n-alkanes (>35%) and lower methylcyclohexane content (<48%), pristane/phytane ratio (0.95~1.56) and carbon isotope values (-27.8‰ ~ -32.3‰); the other type is the coal-derived condensate derived from the Middle-Lower Jurassic terringenous source rocks which has a lower C5-7 n-alkanes content (28% in average) and relatively higher content of methylcyclohexane (>50%), pristane/phytane ratio (1.70 4.62) and carbon isotope values (-26.2‰ in average). Based on a comprehensive study on the n-alkanes, light hydrocarbons and carbon isotopes, it is found the condensates in Kuqa depression have widely experienced evaporative fractionation with a high aromaticity (>0.8) and their high molecules suffered loss. With the evaporative fractionation becoming more significant, the bulk carbon isotopic values of the condensates become heavier, indicating the multistages of the evaporative fractionation. The structural or lithologic traps in the Tertiary and the Jurassic tend to be favorable exploration targets for future oil exploration in Kuqa depression.

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The origin of light hydrocarbons in petroleum: A kinetic test of the steady-state catalytic hypothesis

Cited by 139 publications

References 10 publications

Organic Geochemistry of Continental Margin and Deep Ocean Sediments

Organic Geochemistry of Continental Margin and Deep Ocean Sediments

Occurrence and significance of phytanyl arenes across the Permian-Triassic boundary interval

Geochemical Characteristics of the Condensates and Their Evaporative Fractionation in Kuqa Depression of Tarim Basin, NW China

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