【摘要】 本文通过对茂名油页岩模拟实验裂解气轻烃的研究,发现裂解气中的轻烃和沉积物中的轻烃较为相似。随热演化程度的增加,C₁含量逐渐减少。相对于正构烷烃的含量,异构烷烃的含量逐渐减少。在较高的成熟度阶段,正构烷烃表现为nC₇>nC₆>nC₅≈nC₄。这代表了一种富氢母源形成轻烃的特征。此外,本文对iC₄/nC₄,iC₅/nC₅指标也进行了讨论。更多还原

【Abstract】 In this paper, light hydrocarbons of pyrolysis gas are studied by laboratory simulation of Maoming oil shale. The study shows that the light hydrocarbons of pyrolysis gas are similar to the light hydrocarbons from subsurface sediments in constitution. With increasing thermal evolution level, the content of methane gradually increases and the content of isoalkanes decreases relative to the content of n-alkanes. In higher maturity, n-alkanes occur as nC₇>nC₆>nC₅≈nC₄. This represents characteristics of light hydrocarbons which are generated from rich-hydrogen source rocks. In addition, the indexes such as iC₄/nC₄, iC₅/nC₅ are discussed herein as well.更多还原