摘要
对塔里木盆地寒武系一百多个样品进行了有机组分反射率测试,有78个样品获得有效的有机组分反射率测试数据。从目前探井和露头区样品有机组分反射率分析数据表明,塔里木盆地寒武系源岩均处于高过成熟阶段,尚未发现仍处于生油窗阶段的寒武系中等成熟的源岩。塔中和塔北隆起区中下寒武统镜质体反射率约在1.8%～3.0%,目前满加尔凹陷中下寒武统源岩镜质体反射率在3%以上,满加尔凹陷腹部中下寒武统源岩镜质体反射率在4%以上。中下寒武统源岩成熟度相对较低区分布在塔中隆起主垒带、塔北隆起的凸起区(英买力凸起)和巴楚断隆一部分地区,其等效镜质体反射率在1.6%～2.0%.
More than100samples from Cambrian marine source rocks in Tarim basin have been analyzed for the data of the reflectance of primary organic materials,of which only78have been gained as effective data.According to the pre sent reflectance data,the Middle and Lower Cambrian source rocks of Tarim basin are in the high mature and over ma ture phase,no Cambrian source rocks still exist in the maturity phase of oil windows presently,the vitrinite re-flectance equivalent (VRE)of Cambrian source rocks in Tazhong uplift and Tabei uplift range from1.8%to3%,and higher than3%in Manjar sag,and higher than4%in the central area of Manjar sag.The relative low ma turity area of the Middle and Lower Cambrian source rocks are located in the high areas of Tazhong uplift and Taibei uplift,and limit-ed area of Bachu uplift,with VRE ranging from1.6%to2.0%.
出处
《新疆石油地质》
CAS
CSCD
2002年第5期372-375,共4页
Xinjiang Petroleum Geology
