Biological markers from Green River kerogen decomposition

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doi: 10.1016/0016-7037(82)90009-6
Authors:Burnham, A. K.; Clarkson, J. E.; Singleton, M. F.; Wong, C. M.; Crawford, R. W.
Author Affiliations:Primary:
Lawrence Livermore Lab., Livermore, CA, United States
Volume Title:Geochimica et Cosmochimica Acta
Source:Geochimica et Cosmochimica Acta, 46(7), p.1243-1251. Publisher: Pergamon, Oxford, International. ISSN: 0016-7037
Publication Date:1982
Note:In English
Summary:It is demonstrated that most, but not all, of the isoprenoid hydrocarbon structures are chemically bonded in kerogen (or to minerals) in Green River oil shale. The rate constant for thermally producing isoprenoid, cyclic, and aromatic hydrocarbons is substantially greater than for the bulk of shale oil. Although formation of isoprenoid alkenes is enhanced by rapid heating and high pyrolysis T, the ratio of isoprenoid alkenes + alkanes to normal alkenes + alkanes is independent of heating rate. High-T laboratory pyrolysis experiments can thus be used to predict the distribution of aliphatic hydrocarbons in low-T processes such as in situ shale oil production and perhaps petroleum formation. Significant variation in biological marker ratios occurs as a function of stratigraphy in the Green River formation. This information, combined with methods for measuring process yield from oil composition, enables the time-dependent processing conditions to be related to the corresponding time-dependent oil yield in a vertical-modified in situ retort, even if there is a substantial and previously undetermined delay in drainage of shale oil from the retort. [C.M.B.H.]
Subjects:Biomarkers; Cenozoic; Eocene; Geochemistry; Green River Formation; Hydrocarbons; Identification; Indicators; Isoprenoids; Kerogen; Molecular structure; Oil shale; Organic compounds; Paleogene; Petroleum; Sedimentary rocks; Source rocks; Tertiary; Organic materials; Organic residues
Abstract Numbers:83M/3398
Record ID:1982063236
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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