原油芳烃中三芴系列化合物的环境指示作用

Geochemical characteristics of dibenzothiophene,dibenzofuran and fluorene and their homologues and their environmental indication

原油芳烃组分中的三芴(硫芴、氧芴和芴)系列化合物被认为源于同一母质,他们的含量变化常被认为是原始沉积环境的反映。通过对南阳凹陷、江汉盆地、准噶尔盆地和珠江口盆地等地区64个原油芳烃组分中三芴系列化合物的分析,发现利用新图版来区分原油母质形成的原始环境,比用简单的三角图效果好;用硫芴系列/氧芴系列与姥植比作图来判别环境也能取得用伽马蜡烷指数与姥植比同样效果。

The dibenzothiophene （DBT）, dibenzofuran （DBF） and fluorene （F） and their homologues of the aromatic hydrocarbons of the crude oils are considered that they originated from the same precursor, and their contents can indicate primary sedimentary enviromnent of them. The data of the ∑ SF, the ∑ OF and the ∑ F of the aromatic hydrocarbons in 64 oil samples which are from the Nanyang depression, the Jianghan, the Junggar, and the Zhujiangkou basins in China can be use to distinguish from primary environment of the crude oils with a better effect than the simple triangle figure. Using the diagram of ∑ SF and ∑ OF ratio versus Pr/Ph to distinguish from environment is as well as using that of gammacerane index versus Pr/Ph.