STUDY ON THE HYDROCARBON-GENERATION AMOUNT UNDER THE COMPLEX GEOLOGICAL HISTORY IN THE POLY-CYCLIC BASIN

The hydrocarbon-generation amounts under the complex geological history in poly-cyclic basin were discussed through several sets of thermal simulation experiments.According to the results of experiments,the hydrocarbon-generation amounts in the continuous generation history is greatly different from the one in the discontinuous histories.When hydrocarbon generation reaction completing,the accumulative hydrocarbon amounts generated in the histories with two discontinuous hydrocarbon generation courses are always more than the hydrocarbon amount generated in the continuous generation history.Moreover,the hydrocarbon-generation amounts are various in different discontinuous generation histories.Based on the discussion about the results of thermal simulation experiments,the differences in the hydrocarbon-generation amount was thought resulting from the different hydrocarbon generation courses,discharging efficiencies and surrounding conditions.It can be deduced that the generated hydrocarbon amount for the old source rocks during the complex and long geological history in the poly-cyclic basin should be different from the hydrocarbon amount for the source rock during the simple continuous generation history in the singular-cyclic basin.