石油及沉积有机质中复杂含氧多环芳烃地球化学意义

项目名称： 石油及沉积有机质中复杂含氧多环芳烃地球化学意义

项目编号： No.41272158

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 李美俊

作者单位： 中国石油大学（北京）

项目金额： 82万元

中文摘要： 苯并萘并呋喃、苄基二苯并呋喃和二萘并呋喃是石油中重要的复杂含氧多环芳烃化合物。苯并萘并呋喃具有和苯并萘并噻吩、苯并咔唑类似的化学结构，由于O、S、N原子都具有很强的电负性，N－H键以及S、O原子上的孤对电子都能形成氢键。业已证实由于氢键作用，(苯并)咔唑、二苯并噻吩、苯并萘并噻吩作为分子标志物，已成功应用于油藏充注方向示踪研究中。采用标样共注、质谱图对比方法，可以对石油中的该类化合物进行鉴定。与苯并咔唑、苯并萘并噻吩等参数进行对比，结合实例分析，可论证苯并萘并呋喃、二萘并呋喃的运移分馏效应，建立相关油藏充注示踪新指标。与其它地化参数对比，研究苄基二苯并呋喃在成熟度评价、沉积环境和母质类型判识方面的应用。含氧多环芳烃性质稳定，在高成熟、轻质油凝析以及生物降解油藏中都能稳定存在，在湖相成因原油中含量更高，可以弥补常规地化参数在复杂成因油藏研究中的不足。而且相关参数简单易得、稳定可靠。

中文关键词： 含氧多环芳烃；有机地球化学；油气运移；成熟度；沉积环境

英文摘要： Benzonaphthofuran, phenyldibenzofuran and dinaphthofuran are important complex O-heterocyclic aromatic compounds. Of which benzonaphthofuran has similar molecular structure to those of benzonaphthothiophene and benzocarbazole. Due to the greater electronegativity of O, S and N atoms, the N－H bond and unpaired electons of O and S readily formed hydrogen bonds with other atoms in the carrier beds. Carbazoles, benzocarbazoles, dibenzothiophenes and benzonaphthothiohenes have been proved to be effective molecular indicators to trace the oil filling pathways due to hydrogen bonds. By co-injection of internal standards and comparison with mass spectrums, all these O-heterocyclic aromatic compounds can be identified in the mass chromatograms of aromatic fraction. By comparison with other parameters ralated to carbazoles and benzonaphthothiophenes and combined with typcial case studies, the migragtion fractionation of benzonaphthofurans and dinaphthofurans can be confirmed. Sebsequently, a series of novel molecular indicators can be established to trace the oil reservior filling pathways. The applications and corresponding geochemical parameters based on phenyldibenzofurans can be studied by comparison with other geochemical indicators. They may be potential geochemical parameters in the study of thermal maturity assess

英文关键词： Oxygen-heterocyclic aromatic compounds；Organic Geochemistry；Oil migration；Maturity；Depositional environment