The primary objectives of analysing gases for geochemistry are:
Determination of composition of natural gases: hydrocarbons and non-hydrocarbons
Origin of hydrocarbon gases: biogenic, thermogenic or mixed
Organic source type and thermal maturity of hydrocarbon gases
Origin of non-hydrocarbon gases, if present in sufficient quantities
A standard Analytical Package:
Hydrocarbon gas analysis (C1-C5, C6+)
Non-hydrocarbon gas analysis (CO2, N2, H2S)
Stable carbon isotope ratios in C1, C2, C3, C4
Stable hydrogen isotope ratio in C1
Stable hydrogen isotope ration in CO2 (quantity permitting)
Interpretation
The standard analytical package with interpretation is adequate for interpretation of hydrocarbon gases. For natural gases with high concentrations of specific non-hydrocarbon gases, additional analyses may be required. GCIRMS can be added to the standard package at the client's request.
Determination of composition of natural gases: hydrocarbons and non-hydrocarbons
Origin of hydrocarbon gases: biogenic, thermogenic or mixed
Organic source type and thermal maturity of hydrocarbon gases
Origin of non-hydrocarbon gases, if present in sufficient quantities
A standard Analytical Package:
Hydrocarbon gas analysis (C1-C5, C6+)
Non-hydrocarbon gas analysis (CO2, N2, H2S)
Stable carbon isotope ratios in C1, C2, C3, C4
Stable hydrogen isotope ratio in C1
Stable hydrogen isotope ration in CO2 (quantity permitting)
Interpretation
The standard analytical package with interpretation is adequate for interpretation of hydrocarbon gases. For natural gases with high concentrations of specific non-hydrocarbon gases, additional analyses may be required. GCIRMS can be added to the standard package at the client's request.
