The stable isotope composition of vanadium, nickel, and molybdenum in crude oils

This study presents two matrix‐matched reference materials developed for petroleum Re‐Os measurements. We present the Re and Os mass fractions and 187Re/188Os and 187Os/188Os values (ratio of the number of atoms of the isotopes) for repeatedly measured aliquots (ca. 120–150 mg test portions) of the NIST Research Material 8505 (RM 8505) crude oil, and its asphaltene and maltene fractions, and ~ 90 g of homogeneous asphaltene powder isolated from this oil. Measurements were performed using the Carius tube‐isotope dilution negative‐thermal ionisation mass spectrometry methodology. The RM 8505 crude oil contains 1.98 ± 0.07 ng g−1 Re and 25.0 ± 1.1 pg g−1 Os, with Re‐Os isotope amount ratios of 452 ± 6 for 187Re/188Os and 1.51 ± 0.01 for 187Os/188Os (n = 20, 95% conf.). The homogeneous asphaltene sample contains 16.52 ± 0.10 ng g−1 Re and 166.0 ± 0.9 pg g−1 total Os, and possesses isotope amount ratios of 574 ± 3 for 187Re/188Os and 1.64 ± 0.01 for 187Os/188Os (n = 24, 95% conf.). The intermediate precision of these data makes the RM 8505 whole oil and the (~ 90 g) homogenised asphaltene appropriate petroleum matrix‐matched reference materials for Re‐Os measurements. The asphaltene fraction of the oil is the main carrier of Re and Os of the RM 8505 whole oil, and caution is suggested in using asphaltene and maltene fractions of a single oil for Re‐Os geochronology.

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“…, Ventura et al . , e.g., Fe). This is reflected by the difference in Re‐Os characteristics of whole oil samples in this study (Table ).…”

Section: Resultsmentioning

confidence: 99%

A Matrix‐Matched Reference Material for Validating Petroleum Re‐Os Measurements

Liu

Selby

2017

Geostandard Geoanalytic Res

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“…A preliminary study by Ventura et al (2015) report δ 60/58 Ni (together with V and Mo isotopic compositions) for a global selection of crude oils. These show a limited range of δ 60/58 Ni from 0.4 to 0.7, which overlaps the composition of organic-rich shales (Fig.…”

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confidence: 99%

The Isotope Geochemistry of Ni

Elliott

Steele

2017

Reviews in Mineralogy and Geochemistry

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“…This technique provide new constraints on the origin and history of hydrocarbons (Ventura et al 2015;Georgiev et al 2016). In this volume, Gao et al (2017) discuss the systematics of the vanadium system, and here we describe results from the analysis of Re-Os in whole oils and asphaltenes from three wells in the NE corner of the Bighorn Basin (Fig.…”

Section: Bighorn Basin Petroleum Systems Study: the Power Of Integrationmentioning

confidence: 99%

“…Ventura et al 2015;Georgiev et al 2016), now provide new constraints on the origin and history of hydrocarbons. The study by Gao et al (2017) in this volume reports on some of the first results of vanadium isotope ( 51 V/ 50 V) analysis of oils.…”

Section: The New Frontier In Geochemical Applications In Petroleum Symentioning

confidence: 99%

Geochemical applications in petroleum systems analysis: new constraints and the power of integration

Lawson

Formolo

Summa

et al. 2018

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This paper provides an overview of the role that geochemistry plays in petroleum systems analysis, and how this can be used to derive constraints on the key elements and processes that give rise to a successful petroleum system. We discuss the history of petroleum geochemistry before reflecting on the next frontier in geochemical applications in hydrocarbon systems. We then review the individual contributions to this Special Publication. These papers present new geochemical techniques that allow us to develop a more systematic understanding of critical petroleum system elements; including the temperature and timing of source-rock deposition and maturation, the mechanisms and timescales associated with hydrocarbon migration, trapping, storage and alteration, and the impact of fluid flow on reservoir properties. Finally, we provide a practical example of how these different geochemical techniques can be integrated to constrain and generate a robust understanding of the prolific Paleozoic petroleum system of the Bighorn Basin.

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The stable isotope composition of vanadium, nickel, and molybdenum in crude oils

Cited by 68 publications

References 96 publications

A Matrix‐Matched Reference Material for Validating Petroleum Re‐Os Measurements

A Matrix‐Matched Reference Material for Validating Petroleum Re‐Os Measurements

The Isotope Geochemistry of Ni

Geochemical applications in petroleum systems analysis: new constraints and the power of integration

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