Abstract
The apparent activation energies and pre-exponential factors of the first order reaction are calculated in accordance with the Rock Eval data of 5 rock samples of the Tertiary Shahejie Formation buried in depth of 1801-3407min the Dongpu Depression.When the ratio x（the ratio of generated hydrocarbons amount to potential amount of hydrocarbon generation）is 0.05,then the activation energy E is 131 k Jmol,and the factor A is 1.155×10s.While x reaches 0.95,E then increases to 249.7kJ mol,and A increases to 8.215×10s.
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