Well,

Vitrinite reflectance (Ro)

It is a measure of the thermal maturity that can be performed on plant materials and is calculated from the maximum temperature values.

Ro%= (0.0180*Tmax. °C)-7.16,

Vitrinite Reflectance (Ro%)

• Low maturity source rocks 0.0 -0.55%

• Oil window 0.55%- 1.15%

• Condensate – wet gas window 1.15% -1.40%

• Dry gas window > 1.40 %

Hydrogen Index whom correlating with Tmax to estimate the maturity and burial depth.

HI=Hydrogen Index= HI = (S2*100)/TOC%, Where.

S2= Hydrocarbon cracked from Kerogen (mg HC/g rock).

TOC% = Total organic carbon (%)

Q; Is the orogenic sediment oil-bearing horizons or not, if yes, it is useful, if not it is not useful.

Regards