Source Rock Evaluation
We can help and guide with your Geo Chemical analysis . . .
Key Questions To Ask about your basin
How much petroleum can be generated?
What Type of hydrocarbons are likely?
What is the maturity in wells?
How can I predict hydrocarbon generation in my basin?
Presence of mature source rock is essential for finding the hydrocarbon filled prospects.
The purpose of TOC and Rock-Eval pyrolysis is to:
The type of organic matter present & indication of its thermal maturity (Espitalié et al. 1977).
The parameters most frequently reported are TOC, S1, S2, S3 and Tmax, together with a number of derived parameters (HI, OI, PP and PI), as listed in the table below.
Van Krevelen diagram: Kerogen typing
Espitalie et. al Sample Analysis
S1 -> is free bitumen that is key indicator of oil & gas shows
S2 -> Non-Soluble Kerogen content that indicates hydrocarbon potential
S1 + S2 -> Total genetic oil & gas potential
S3 -> CO2 potential
S1/S1+S2 -> is a transformation ratio (Kerogen that has matured into HC
HI. -> Hydrogen Index (HI) that is used kerogen quality typing
OI -> Oxygen Index (HO) that is used kerogen quality typing
HI & OI. -> Used directly in van Krevelen diagram to identify kerogen type (see above)
Source Rock Maturity
Data obtained from source rock evaluation can help build 1D/2D/3d basin models for predicting hydrocarbon generation, expulsion, migration, losses and accumulation in the trap. It is important tool in de-risking a play and ensure a hydrocarbon-filled prospect.