Headspace Gas Analysis
- Cuttings + Bacteriocide
- Gas Chromatography :
- Methane (C1) - Penthane (C5)
- Identification :
- Hydrocarbon Type (Gaseous vs. Liquids)
- Thermal Maturity
- Migrated Hydrocarbon Thermogenic vs. Biogenic
- Carbon Isotope
Head-Space Gas Analysis
Butane Index (nC4/(i+n)C4) of nearly constant value indicates vertical migration of thermogenic HCs.
Head-Space Gas Chroma Tograms
Interpretation
- C1 - C4 Total Gas
- Wetness Gas :
- 0 - 35 % Immature
- 35 - 60 % Early Mature
- 60 - 100 % Mature
- Ratio iC4/nC4 :
- > 1 Immature
- < 1 Mature
- C5+ : Liquid Hydrocarbon