GEOCHEMICAL ANALYSIS – NATURAL GAS
Purposes of the natural gas geochemical analysis
- Genetic type of: natural gas, shale gas, coal-bed methane gas, tight gas, greenhouse gases, etc.
- Proportion of mixing between microbial and thermogenic gases
- Maturity of source organic matter
- Biodegradation influence
- Migration distance
Geochemical analysis – conventional natural gas, unconventional gases (shale, tight)
- Gas sampling and preparation
- Molecular composition: CH4, C2H6, C3H8, iC4, nC4, iC5, nC5, neo-C5, C6, N2, O2, Ar, He, CO2, H2, H2S
- Izotopes:
- δ13C (CH4)
- δD (CH4)
- δ13C (C2H6)
- δ13C (C3H8)
- δ13C (iC4H10)
- δ13C (nC4H10)
- δ13C (iC5H12)
- δ13C (nC5H12)
- δ13C (CO2)
- δ15N (N2)
- δ34S (H2S)