华北地区上古生界有效烃源岩评价思路

在有效烃源岩评价思路及方法上，前人多采用常规的烃源岩厚度、丰度、类型及生烃潜力等指标进行排队对比，划分优劣次序。这对于第三系源岩毫无疑问，但对于经受多期次构造运动改造的上古生界烃源岩则不完全适用。针对石炭-二叠系地层在原始沉积面貌被打破、被断裂或褶皱切割成大小不同的块体、后期热演化史存在差异的情况下，进一步评价其二次生烃潜力，并提出上古生界烃源岩评价思路应有别于第三系。

Evaluation on Efficient Source Rocks of Upper Paleozoic in North China

The conventional indexes of source rocks are as follows: thickness,abundance,type,hydrocarbon generation potential,which is used to evaluate the effectivity of source rocks although different limitation of organic carbon for evaluating efficient source rocks is applied. It is an applicable method without question for evaluation on efficient source rocks of Tertiary,but this method is not fully applicable for evaluation on the source rocks of Upper Paleozoic in North China where multi tectonic movements happened,and the source rocks were reformed. According to the fact that the original geomorphic feature of Carboniferous and Permian has been broken into different blocks by folds and faults and there was difference of thermal history at later period,the author provides a method to evaluate secondary hydrocarbon generating potential of Upper Paleozoic and the evaluation method on source rocks of Upper Paleozoic is different to those of Tertiary.