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在原油和沉积岩中,广泛存在着类异戊二烯烷烃。它们是一种生物标记化合物,是异构烷烃的重要组成部分。原油中这类化合物的存在是石油有机成因的重要依据。由于成油环境及其生油母质的差异,原油和沉积岩中类异戊二烯烷烃的分布特征也有所不同,所以,在有机地球化学研究中,目前主要应用于油源对比和成油环境的探讨。在我国各类沉积盆地中,往往具有多套生、储、盖组合,因此研究原油中类异戊二烯烷烃的地球化学特征,具有一定的意义。
In crude oils and sedimentary rocks, isoprenoid alkanes are widespread. They are a biomarker compound that is an important part of isoparaffins. The existence of these compounds in crude oil is an important basis for the organic cause of petroleum. Due to the difference between the oil forming environment and the parent material, the distribution characteristics of isoprenoid in crude oil and sedimentary rocks are also different. Therefore, in the study of organic geochemistry, it is mainly used in oil source contrast and oil-forming environment Discussion. In all kinds of sedimentary basins in our country, there are often many sets of raw, reservoir and cap assemblages. Therefore, it is of great significance to study the geochemical characteristics of isoprenoid in crude oil.