The Rock-Eval 7S is the latest fully automated instrument that performs geochemical analysis of kerogen-containing rock samples.
The device determines, via high-temperature pyrolysis and subsequent oxidation, the critical kerogen and kinetics parameters.
It allows the determination of:
- Total Organic Carbon content (TOC)
- Mineral carbon content (MINC)
- Kerogen type
- Well log correlations
- Petroleum generation modelling
The pyrolysis and oxidation products are measured by:
- Flame Ionization Detector (FID) for hydrogen-containing compounds
- Infrared cell (IR) for oxygen-containing products
- The feature distinguishing the RE-7S is its ability to evaluate the sulfur content of samples from the byproducts of pyrolysis and oxidation.
- In addition to the two ovens, a third oven has been implemented to convert all sulfur-containing samples into SO2.
- A ceramic oven is utilized for the oxidation vessel due to the high temperature required to trigger the sulfur products’ effluence.
Data from the RE-7S can be input into the GEOWORKS software to compute rock characterization parameters such as:
- Hydrogen indices
- Oxygen indices
- Shape factors
