Compound Specific Isotope Analysis

Compound-specific stable isotope measurements, primarily δ13C, are a crucial tool in oil-oil and oil-source rock correlations as well as for understanding the origins and histories of oil reservoirs. At GeoMark we can analyze whole crude oil samples via direct injection into a GC-IRMS allowing us to readily identify a full suite of n-alkanes (>nC-25+) along with the associated cycloalkane, aromatic and isoprenoid peaks. Isotopic evaluation of these additional compound classes reveals trends in maturity and origins which are not identifiable when exclusively assessing the traditional n-alkane package (>n-C12).