Detection and evaluation of hydrocarbons in source rocks by fluorescence microscopy

In pursuing the detection of hydrocarbons in sedimentary rocks by conventional petrological methods, an attempt has been made to correlate standard fluorescence parameters with the quality and quantity of hydrocarbons present in crushed rocks embedded in epoxy resin. The capacity of the embedding re...

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Bibliographic Details
Published in:Organic geochemistry 1993-08, Vol.20 (6), p.789-795
Main Authors: Alpern, B., Lemos de Sousa, M.J., Pinheiro, H.J., Zhu, X.
Format: Article
Language:English
Subjects:
Applied sciences
crude oil
Crude oil, natural gas and petroleum products
Earth sciences
Earth, ocean, space
Energy
epoxy resin
Exact sciences and technology
fluorescence
Fuels
geochemistry
Geology and geochemistry. Geological and geochemical prospecting. Petroliferous series
hydrocarbon
Hydrocarbons
maturation
petrology
Prospecting and exploration
Prospecting and production of crude oil, natural gas, oil shales and tar sands
reservoir
Sedimentary rocks
source rock
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Summary:In pursuing the detection of hydrocarbons in sedimentary rocks by conventional petrological methods, an attempt has been made to correlate standard fluorescence parameters with the quality and quantity of hydrocarbons present in crushed rocks embedded in epoxy resin. The capacity of the embedding resin, commonly used in the preparation of petrographic samples, to extract and physically fix hydrocarbons is recognized. This phenomenon permits one to measure monochromatic fluorescence parameters, I 546 and Q (u.v.) 650/500, on the trapped hydrocarbons and to correlate these parameters with selected geochemical data. The potential application of using these petrological parameters to evaluate oil quantities and qualities is tested using real case studies. It is also shown that it is possible to directly detect the mature zone in each case.
ISSN:0146-6380
1873-5290
DOI:10.1016/0146-6380(93)90063-H