Distribution of high molecular weight hydrocarbons and genesis of high wax content oil from the south slope zone of the Dongying Sag,the Jiyang Depression

L? Hui; Chen Zhilin; Wang Zhong; Tang Hongsan

doi:10.11743/ogg20080311

Views : 0 下载量: 1030 CSCD: 0

Export
Share
Collection
Album

Distribution of high molecular weight hydrocarbons and genesis of high wax content oil from the south slope zone of the Dongying Sag,the Jiyang Depression
Vol. 29, Issue 3, Pages: 355-360(2008)
Online First：24 June 2008，

Published：2008
DOI： 10.11743/ogg20080311
稿件说明：

移动端阅览

DOI：

L? Hui, Chen Zhilin, Wang Zhong, et al. Distribution of high molecular weight hydrocarbons and genesis of high wax content oil from the south slope zone of the Dongying Sag,the Jiyang Depression[J]. 2008, 29(3): 355-360. DOI： 10.11743/ogg20080311.

摘要

运用高温气相色谱技术及双质谱技术对济阳坳陷东营凹陷高蜡原油的高分子量烃类的组成、分布特征及非常规的生物标志物进行了研究。高温气相色谱分析结果表明

王古1井奥陶系高蜡原油与古近系孔店组高蜡原油具有相同的油气来源

但成熟度高于孔店组原油。双质谱技术分析表明

研究区高蜡原油中含有丰富的C

和24-降胆甾烷

从而区别于本区来源于古近系沙河街组四段上亚段烃源岩的正常原油

这为藻类生源提供了重要证据。除陆源植物外

藻类等低等水生生物也是本区高蜡原油形成的重要母质;微生物改造是研究区高蜡原油形成的一个重要因素;在一定的成熟度范围内

相对较高的成熟度影响原油含蜡量的高低。

Abstract

A study of the components

distribution and unconventional biomarkers of high molecular hydrocarbons in high wax content oils from the south slope zone of Dongying sag was carried out by using high temperature gas chromatography and dual mass spectrometry.The results suggest that the high wax content oil in the Ordovician well Wanggu-1 share the same source with that in the Kongidan Formation

yet its maturity is higher than that of the latter.GC-MS-MS analysis indicates that the high wax content oils in the study area are rich in C

24-norcholeatane

which distinguishes them from the normal oils originated from the Upper Es

and proves that the high wax content oils might come from alginite.Apart from terrestrial organic matters

hydrobionts of lower rank are also important original source materials of high wax content oils.Other important factors for the generation of the high wax content oils include microbial action.The relatively high maturity has certain influences on wax content within certain maturation ranges.