What are the methods for identification of source rock maturation?

Answer

There are several methods to known the source rock maturation.
In petroleum industry commonly used vitrinite reflectance, spore colour index, and Tmax methods.

Loptin 1971, proposed one model called TTI modelling. In his model time and temperature both are taken into consideration to calculate the maturation of a source rock.

Any chemical reaction, double when increase the 10 deg centigrate, Lopatin assume the rate of maturation is also follow the same double role.

An average 100 deg centigrate is sufficient for generate the hyderocarbons so that he has taken 100-110 deg centigrate temperature interval is base interval for his calculation. He assinged n=0 for this iterval.

n^th temperature interval, the temperature interval will 2ⁿ

The modelling is begin with construction of burial history curves.