Basic Interpretation – Standard interpretation of your specific sample data ONLY; does not include any contextual data for the regional area or Basin, or final written report. Includes Projected Source Rock Type, Age, Thermal Maturity Level, and Degree of Biodegradation. Not recommended for companies that do not have a Geochemist on staff.

Complete and Comprehensive Interpretation – Includes standard interpretation of samples analyzed plus comparison/contrast to the associated GeoMark Interpretive Study, or RFDbase data; your data is put into context of the larger Basin/Play to look for trends, oil family identification, source, migration pathways, etc.; includes one detailed digital report.

Saturate (branched/cyclic) biomarkers

Aromatic biomarkers

SARA & Molecular Sieve required as a prerequisite

Oil/Extract required sample amount is 0.1 mg for each Saturate and Aromatic

NSO fraction

Whole Oil

Sulfur isotope signatures (δ34S) are a subtle, yet underused, tool for characterizing and correlating crude oil samples and systems. These signatures are indicative of the origin of the sulfur in oil samples and given that the source of most sulfur in oils is contemporaneous seawater sulfate these signatures can also be indicative of geologic age.  At GeoMark we can analyze sulfur isotope signatures in whole oil samples with a weight % composition as low as 0.05%.

%Saturate

%Aromatic

%Resin (NSO)

%Asphaltene

Can be done on an oil or extracted rock material. 50 to 100 mg of sample required.

SARA serves as the prerequisite to Saturate and Aromatic GCMS

The weight % Sulfur for a given oil is another common ‘bulk property’ and can reflect the oil’s source and quality. Sources containing low concentrations of free iron (i.e. carbonate source rocks) frequently produce oils rich in sulfur. Typically, the amount of sulfur in oils usually decreases with increasing thermal maturity and increases as a result of bacterial degradation. The % Sulfur content is independent of H₂S content of an oil sample.