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Hydrocarbon Generation Kinetic Characteristics from Different types of organic matter

Acta Geologica Sinica(English Edition) 2011年第3期85卷 702-711页

作者： WANG Min LU Shuangfang XUE Haitao WANG Weiming LIU Min DONG Qi WANG Guihua Earth Science Institute Northeast Petroleum University HeiIongjiang 163318 China Chongqing Divison CNPC Logging Shanxi 710201 China

In order to contrast the hydrocarbon generation kinetic characteristics from different types of organic matter（OM）,18 samples from different basins were pyrolyzed using Rock-Eval-Ⅱapparatus under the open *** the experimental results,the curve of hydrocarbon generation rate *** can be easily obtained,which usually can be used to optimize kinetic parameters （A,E,F）of the hydrocarbon generation *** this paper,the parallel first-order reaction with a single frequency factor model is selected to describe the hydrocarbon generation kinetic characteristics. The hydrocarbon generation kinetic parameters reveal that the types of compound structures and chemical bonds of the lacustrine fades typeⅠOM are relatively homogeneous,with one dominating activation *** types of chemical bonds of the lacustrine facies typeⅡ2 OM and the terrestrial facies typeⅢOM are relative complex,with a broad activation energy distribution,and the reaction fraction of the preponderant activation energy drops with the decrease of hydrogen *** impact of the activation energy distribution spaces on the geological extrapolation of kinetic parameters is also *** results show that it has little effect on the hydrocarbon transformation ratio（TR）and therefore,the parallel first-order reaction model with proper number of activation energies can be better used to describe the hydrocarbon generation *** geological extrapolation results of 18 samples of kinetic parameters show that the distribution range of the hydrocarbon generation rate of the typeⅠOM is relatively narrow and the hydrocarbon generation curve is *** comparison,the distribution range of the hydrocarbon generation for typeⅢand typeⅡ2-ⅢOM are quite wide,and the hydrocarbon generation curves have fluctuation *** distribution range of the hydrocarbon generation rate and the fluctuation phenomena are related to the kinetic parameters of OM;the narrower the activation energy d

关键词： kinetic characteristics simulation experiment type of organic matter activation energy hydrocarbon generation rate

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