Abstract
The pyrolysis kinetics of source rock kerogen with hydrocarbon formation is studied by using modified Rock-Eval apparatus with constant heating rates. Different mathematical models such as the overall first order reaction model, the maximum reaction rate model, the parallel reaction model and the series reaction model are used for simulating the experimental data respectively. Apparent activation energy and the pre-exponential factor are obtained. Based on these parameters and the geothermal gradient and deposition rate, the hydrocarbon generation of source rock kerogen at different burial depths under natural geological conditions is calculated by using different kinetic models. Source rock from the Dongpu Depression is used as the experimental sample. The calculated results of different models are compared with the real situations. It is shown that the maximum reaction rate model and the series reaction model are better.
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