|
|||||
|
|
| 南羌塘扎仁地区白云岩油苗芳烃地球化学特征 | |
| 引用本文： | 陈文彬,廖忠礼,伊海生,付修根,杜佰伟,冯兴雷.南羌塘扎仁地区白云岩油苗芳烃地球化学特征[J].断块油气田,2010,17(6):694-697. |
| 作者姓名： | 陈文彬 廖忠礼 伊海生 付修根 杜佰伟 冯兴雷 |
| 作者单位： | 1. 成都理工大学沉积地质研究院,四川,成都,610059;成都地质矿产研究所,四川,成都,610081 2. 成都地质矿产研究所,四川,成都,610081 3. 成都理工大学沉积地质研究院,四川,成都,610059 |
| 基金项目： | 国家油气专项“青藏高原油气资源战略选区调查与评价”(XQ2004-2006)资助 |
| 摘 要： | 南羌塘发现了大规模的白云岩古油藏带,这对该区油气勘探意义重大。采用GC-MS分析技术探讨了南羌塘盆地扎仁地区白云岩油苗芳烃化合物地球化学特征,分析结果表明：研究的样品中萘系列化合物质量分数低,总体上具有三甲基萘大于二甲基萘大于甲基萘大于萘的分布规律,MNR值变化于0.96～1.97,说明白云岩油苗经受了一定热演化,是甲基重排的结果;菲系列化合物质量分数较高,且甲基菲的分布模式为9-甲基菲大于2-甲基菲大于1-甲基菲大于3-甲基菲,反映了白云岩油苗生烃母质主要为低等水生生物,甲基菲成熟度指标MPI1为0.44～0.61,由此算出其成熟度Ro值为0.67%～0.77%,表明油苗的热演化大致为低—中成熟阶段;三芴系列在芳烃中质量分数较高,并且氧芴和芴的质量分数很低,而硫芴的质量分数很高,DBT/P值介于1.04～2.58,表明白云岩油苗生烃母质形成于海相偏还原环境;三芳甾烷质量分数很低,其与沉积环境有关的C26（20S）/C28（20S）值为0.29～0.37,表明白云岩油苗生烃母质形成于淡水、微咸水沉积环境,其与成熟度有关的C20/C20＋C26（20S）]值介于0.61～0.77,表明扎仁地区白云岩油苗处于成熟阶段。 |
| 关 键 词： | 芳烃化合物 白云岩油苗 成熟度 扎仁地区 南羌塘 |
Aromatic geochemistry characteristics of dolomite oil seepage in Zaring Area of South Qiangtang Basin |
|
| Chen Wenbin,Liao Zhongli,Yi Haisheng,Fu Xiugen,Du Baiwei,Feng Xinglei.Aromatic geochemistry characteristics of dolomite oil seepage in Zaring Area of South Qiangtang Basin[J].Fault-Block Oil & Gas Field,2010,17(6):694-697. | |
| Authors: | Chen Wenbin Liao Zhongli Yi Haisheng Fu Xiugen Du Baiwei Feng Xinglei |
| Affiliation: | Chen Wenbin1,2 Liao Zhongli2 Yi Haisheng1 Fu Xiugen2 Du Baiwei2 Feng Xinglei2(1.Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,China,2.Chengdu Institute of Geology , Mineral Resources,Chengdu 610081,China) |
| Abstract: | Large scale dolomite paleo-oil pool zones have been found out in South Qiangtang Basin,which has a significant sense for the exploration activity in this area.Aromatic geochemistry characteristics have been discussed on the basis of GC-MS analysis for the dolomite oil seepage in Zaring Area of South Qiangtang Basin.The analysis results show that the content of naphthalene series of compounds is low and the distribution model form high to low is trimethylnaphthalene,dimethylnaphthalene,methylnaphthalene,naph... |
| Keywords: | aromatic compounds dolomite oil seepage maturity Zaring Area South Qiangtang Basin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |