在沉积盆地油气资源评价中生油岩的评价是个关键,因为,油源的缺乏会从根本上动摇勘探的基础。但是,在工作中常常会遇到沉积岩中,特别是过成熟阶段的沉积岩中有机碳含量过低的情况,致使我们怀疑这些(根据其深色和细粒结构)曾被感性认为的生油岩的生油潜力。根据大部分石油碳氢化合物是由于生油岩中干酪根在埋藏过程中由热降解作用而生成的理论,只能把沉积岩中的有机碳看作在热降解过程中不能和尚未转化为油气的干酪根的有 The evaluation of source rock in the evaluation of oil and gas resources in the sedimentary basin is crucial because the lack of oil sources fundamentally shakes the foundations of exploration. However, the low levels of organic carbon in sedimentary rocks, especially over-mature sedimentary rocks, are often encountered in work, leading us to suspect that these oil-derived rocks, which have been perceptually considered (based on their dark and fine-grained structure) The potential of oil generation. According to the theory that most petroleum hydrocarbons are generated by thermal degradation during the burial process of kerogen, the organic carbon in sedimentary rocks can only be regarded as not being able to be transformed into hydrocarbons during thermal degradation There is kerogen