临南洼陷古近系火山岩油藏原油多环芳烃地球化学特征及其地质意义

发布时间：2018-05-29 11:25

本文选题：多环芳烃 + 沉积环境　；参考：《西安石油大学学报(自然科学版)》2017年05期

【摘要】：对临南洼陷古近系火山岩油藏中12个原油样品进行芳烃生物标志物分析,结果表明:芳烃中三环、四环芳烃化合物占优势,三芳甾烷含量较高,二环、五环、NSO杂环芳烃化合物含量较低。二环芳烃参数(TDE_1、TDE_2、TDE_3)指示典型的湖相、源自年轻源岩的原油特征。三环芳烃以菲系列化合物占主导,检出少量惹烯,表明原油是以低等水生生物为主要生源,有少许高等植物贡献。五环芳烃中芘、苯并芘丰富,侧证了低等水生生物的优势输入。NSO杂环芳烃中含量占绝对优势的硫芴反映出源岩沉积于较强的还原环境。二环芳烃成熟度参数(DNR_1、TNR_2,)、三环芳烃成熟度参数(MPI_1、F_1和F_2)、含硫芳烃成熟度参数(MDR)、三芳甾烷成熟度参数C_(28)-TAS 20S/(20R+20S)均一致显示原油处于成熟—高成熟阶段。
[Abstract]:The aromatics biomarkers of 12 crude oil samples from Paleogene volcanic reservoirs in Linnan sag were analyzed. The results showed that the aromatics were mainly tricyclic, tetracyclic aromatics, triarosterane, and bicyclic. The content of NSO heterocyclic aromatic compounds is low. The PAHs parameter TDE1 / TDE2 / TDES3) indicates the typical lacustrine facies derived from the crude oil characteristics of the young source rocks. Tricyclic aromatic hydrocarbons are dominated by phenanthrene series compounds, and a small amount of yakene is detected, which indicates that crude oil is mainly derived from low aquatic organisms and has a little contribution from higher plants. Pyrene and benzopyrene are abundant in pentacyclic aromatics. The dominant input of low aquatic organisms. Sulfur fluorene, which is the dominant content in NSO heterocyclic aromatics, reflects that the source rocks are deposited in a strong reduction environment. The maturity parameters of dicyclic aromatic hydrocarbons (DNRS) and TNR2s, tricyclic aromatic hydrocarbons (PAHs), MPI-1 / FST1 and F2s, sulfur containing aromatics (C_(28)-TAS 20S/(20R) and triarosteranes (C_(28)-TAS 20S/(20R 20s) all show that the crude oils are in the mature-high maturity stage.
【作者单位】：山东科技大学地球科学与工程学院;青岛海洋科学与技术国家实验室;
【基金】：国家自然科学基金(41272139;4772120) 山东省自然科学杰出青年基金(JQ201311)
【分类号】：P618.13

【相似文献】