| Lot of geochemical data and petroleum exploration practices have shown that great risk will be introduced from a direct application of thermal simulation results of source rocks or kerogens in source rock evaluation. Great differences exist between the hydrocarbon-generating model gotten from laboratory experiments with short duration and high temperature conditions and the model from petroleum basins with slow increasing temperature and long geological duration. Since a hydrocarbon-generating model from thermal simulation results can not directly be applied to geological situation, extrapolation of oil and gas formation from laboratory experiments to sedimentary basins by means of kinetics method has been widely addressed in the world. Recently, some work has been done in the Tarim Basin and good results have been gotten. Much work has been done on the hydrocarbon generation patterns of source rocks from the Dongying Depression based on laboratory thermal simulation experiments, but there is no report on kinetics of hydrocarbon generation of the source rocks. In this study, hydrocarbon generation thermal simulation tests and determination of the related kinetics parameters of some typical source rocks from the Dongying Depression have been carried out in a closed system and an open system. The following results and recognition have been obtained:1. Some important kinetics parameters of the typical source rocks from the Dongying Depression have been obtained.The Closed system: The sample: W35, kerogen from an ES4 shale. The activate energy distribution of the kerogen for the hydrocarbon generation of C1, C1-5, C6-12 and C13+ are: 48-66 kcal/mol, 42-66 kcal/mol, 51-61 kcal/mol, 53-65 kcal/mol. The sample: Y921, kerogen from an ES3 mudstone, the activate energy distribution of the kerogen for the hydrocarbon generation of C1, C1-5, C6-I2 and C13+ are: 46-70 kcal/mol, 48-72 kcal/mol, 45-62 kcal/mol, 49-58 kcal/mol.The open system: The sample: B648, ES3 shale, the activate energy distribution of the source rock for the hydrocarbon generation of C1-5, C13+, C6-12 and C, are: 57-81, 49-64, 53-65 and 60-68 kcal/mol, respectively. The sample Ml 7-7-5, ES4 mudstone, the activate energy distribution of the source rock for the hydrocarbon generation of C1-5, C13+, C6-12 and C1 are: 40-56 kcal/mol, 44-54 kcal/mol, 40-50 kcal/mol, 40-58 kcal/mol, respectively.2. Some valuable information has been obtained from a systemic investigation of carbon isotopic distribution of individual compounds from C1-C30, such as ①Within the maturity range, gas carbon isotopic values have the characteristics of 613C1< 5 13C2< 5 13C3< 6 13C4 ; ② Heating rates in the experiments have an obvious effect on carbon isotopic values, showing slower heating rate has a heavier carbon isotopic values than faster heating rate; ③ Maturity has a significant influence on carbon isotopic values. With increasing maturity, carbon isotopic values of compounds become heavier; ④The carbon isotopic values of light oils have a better relationship with its source organic matter and maturity than heavy oils. For a source rock, the carbon isotopic values of C9-11 have a linear relationship with maturity.3. The hydrocarbon-generating history of source rocks from the Dongying Depression has been simulated by the Kinetics software, with the combination of burial and geothermal history. The results have shown that the ES4 shale and ES4 mudstone have different hydrocarbon generation patterns. The ES4 shale has two oil-generating peaks, occurring at the geological temperature of 105℃and 140℃, respectively, corespondent to VRo of 0.53% and 0.95%. The ES4 mudstone has only one oil-generating peak, occurring at about 140 ℃, corespondent to VRo of 0.95%.4. Based on the hydrocarbon-generation models of the source rocks from this study, an improving method to calculate petroleum-generating amounts and petroleum resource amounts has been suggested. Using this method, the petroleum-generating amounts and the petroleum resource amounts of the ES4...
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