正烷烃在石油地球化学中的作用

The possibility is explored of using the characteristics of n-alkane distribution as an indicator of oll generating rocks and as indices for some other interesting aspects concerning the secondary migration of oil. It is suggested that the upper limit of the n-alkane OEP value of oil generating rocks should be considered as a function of the age of oil formation rather than a constant regardless of the difference in age. For a given stratum in a given region, it possesses a fixed value which can be defined through analyses and calculations with respect to the known oil generating rocks within rids stratum.     

制备岩石矿物荧光薄片的一种新方法

某些物质在紫外光激发下能发出荧光。根据这一特性设计的荧光显微镜,医学部门用来观察细菌及生物切片等;地质工作者用它来鉴定岩石中的孢子花粉;也有的地质人员将岩石制成特定的薄片,在荧光显微镜下研究岩石中分散沥青状态。石油生产部门则把它用来在不粉碎原岩石样品的条件下观察沥青于岩石中的含量及分布状态,判断沥青为原生或次生和石油运移方向等,结合其他地球化学指标评价石油的生、储能力。此外,它还可与偏光显微镜配合,观察岩石矿物中更多的特性。