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Nanoscale Molecular Fractionation of Organic Matter within Unconventional Petroleum Source Beds (2019)

Dates

Publication Date
Time Period
2019

Citation

Croke, M.R., Jubb, A.M., Hackley, P.C., Hatcherian, J.J., Qu, J., and Nesheim, T.O., 2019, Nanoscale Molecular Fractionation of Organic Matter within Unconventional Petroleum Source Beds (2019): U.S. Geological Survey data release, https://doi.org/10.5066/P9OP7GRB.

Summary

Fractionation of petroleum during migration through sedimentary rock matrices has been observed across lengths of meters to kilometers. Selective adsorption of specific chemical moieties at mineral surfaces and/or the phase behavior of petroleum during pressure changes are typically invoked to explain this behavior. Given the current emphasis on unconventional (continuous) resources, there is a need to understand petroleum fractionation occurring during expulsion and migration at the nanometer to micron scale, due to the fine-grained nature of petroliferous mudrocks. Here organic matter compositional differences observed within kukersite petroleum source beds (containing acritarch Gloeocapsomorpha prisca) from the Ordovician Stonewall [...]

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Figure 1.csv 3.96 KB
Figure 2.csv 22.61 KB
Figure 4.csv 22.65 KB
Figure S4.csv 2.98 KB
Product_10.5066P9OP7GRB_METADATA.xml
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Purpose

Data were collected in order to evaluate effects of migration through rock matrices on petroleum composition, recovery, and oil migration.

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  • Energy Resources Program
  • USGS Data Release Products

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9OP7GRB

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