Abstract
In this report, the author attempts to restore, as a function of geologic time, the generation of petroleum-like components from kerogen in mudstone sample. The restoration is performed with the following assumptions: (1) Kinetic parameters calculated from pyrolysis data of kerogen could be ap-
plied to the natural processes of the generation of decomposed products. (2) Geothermal gradient and surface temperature have not changed through geologic time.
The author also applies the same kind of simulation to neighboring areas where the same formations should be expected and should have different thermal histories. In this procedure, the following assumption is added: (3) There is no lateral change in the characteristics of organic matter and lithofacies at
deposition all over the evaluating areas.
When there seems to be little migration of heavy petroleum-like components, the results of simulation could be compared with the analytical data of mudstones at each evaluating point.
