塔河油田奥陶系原油芳烃地球化学特征

贾存善; 王延斌; 顾忆; 黄继文

doi:10.11781/sysydz200904384

塔河油田奥陶系原油芳烃地球化学特征

doi: 10.11781/sysydz200904384

1.
中国矿业大学资源与安全工程学院, 北京 100083
2. 中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214151

详细信息

作者简介:
贾存善(1973- ),男,高级工程师,从事油气地球化学与成藏研究.E-mail:jiacs@mail.wuxisuo.com.

中图分类号: TE122.1
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出版历程
- 收稿日期: 2009-02-09
- 修回日期: 2009-07-15
- 刊出日期: 2009-08-28

GEOCHEMICAL CHARACTERISTICS OF AROMATIC HYDROCARBONS OF CRUDE OILS FROM ORDOVICIAN RESERVOIR IN THE TAHE OILFIELD

1.
College of Resource & Safety Engineering, China University of Mining & Technology, Beijing 100083, China
2. Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China

摘要

摘要: 芳烃化合物是原油中重要的组分,在判识原油生源环境和成熟度方面应用广泛.塔河油田主体区奥陶系原油遭受过强烈的生物降解作用,常用的饱和烃生物标志化合物指标往往不能正确反映原油成熟度、运移等信息,芳烃化合物能有效抵制生物降解作用,可更好地反映这些地质信息.通过芳烃GC-MS分析,表明塔河奥陶系原油具有高萘、高菲、高硫芴、低氧芴、低联苯等特点,均来自同一油源,生烃母质属还原-强还原环境.烷基萘指数、二苯并噻吩和三芳甾烷等成熟度指标表明,塔河油田奥陶系原油成熟度由西向东、由北向南不断增高,反映出奥陶系油气主要来自沙雅隆起东南部的满加尔坳陷.
- 成熟度 /
- 生源环境 /
- 芳烃 /
- 原油 /
- 塔河油田
Abstract: Aromatic hydrocarbons as the important components of crude oils are widely used in estimating depositional environment of source rooks and maturity of oil.The maturity and migration information of Ordovician oil in the main area of Tahe Oilfield can not be exactly inferred by the normal biomarker parameters of saturated hydrocarbon because of strong biodegradation,but it can be indicated by the aromatic hydrocarbon because of its good restrain to biodegradation.The GC-MS analyses of aromatic hydrocarbon indicates the Ordovician oils have rich naphthalene,phenanthrene and dibenzothiophene,but poor dibenzofuran and diphenyl,which demonstrated that all Ordovician oils come from the same source rocks.The environment of parent material is reduction-strong reduction.The maturation degree of Ordovician oil increases from west to east,from north to south,which is proved by alkylnaphthalene index,DBT and triaromatic steroid.As a result,Manjiaer Depression in the southeast of Shaya uplift belt is regarded as the main hydrocarbon kitchen of Ordovician gas and oil.
- maturity /
- depositional environment /
- aromatic hydrocarbons /
- crude oils /
- Tahe Oilfield

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